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This page lists questions and answers that were posted by visitors named ..

Questions

The following questions were asked by visitors named ..

A society is characterized by similar values, mutual interests, shared institutions, and a common culture. Consider the following question: To what extent would it be accurate to say that the New England, Middle, and Southern colonies had merged to create...

33. As ice melts at standard pressure, its temperature remains at 0°C until it has completely melted. Its potential energy 1)decreases 2)increases 3)remains the same

Which temperature change would cause the volume of a sample of an ideal gas to double when the pressure of the sample remains the same? 1. from 200°C to 400°C 2. from 400°C to 200°C 3. from 200K to 400K 4. from 400K to 200K

A sealed flask containing 1.0 mole of H (g) and a sealed flask containing 2.0 moles of He(g) are at the same. 2 temperature. The two gases must have equal 1. masses 2. volumes 3. average kinetic energies 4. numbers of molecules

Fractional distillation is a technique used to separate complex mixtures of hydrocarbons based on differences in their 1. heats of fusion 2. heats of vaporization 3. melting points 4. boiling points

A dry mixture of kno3 and sand could be separated by 1. adding water to the mixture and filtering 2. adding water to the mixture and evaporating 3. heating the mixture to a high temperature 4. cooling the mixture to a low temperature

Given the unbalanced equation shown: _Al+_CuSo4 -> _Al2(SO4)3+_Cu When the equation is balanced using the smallest whole-number coefficients, what is the coefficient of Al?

What are 15 ways in which the US government helps us in our daily lives? Local, state, and federal?

How do i find the domain and range of these functions? f(x)=x+1 f(x)=2/x f(x)=(x+1)/(2x-5) f(x)=sqrt(x+1) f(x)=sqrt(3x-9) f(x)=1/sqrt(x-5)

How do I solve this problem - i37_tinypic_com/qqeo8w.jpg (replace the underscore with a dot) It gives the pressure, volume, and temperature and the only formula that has all those values is PV=nRT but I don't know where to get the number of moles since it...

A quantity of N2 occupies a volume of 1 L at 290 K and 1.5 atm. The gas expands to a volume of 2.7 L as the result of a change in both temperature and pressure. Find the density of the gas at these new conditions (in grams per liter).

What is the domain of these two functions? (1) g(x) = square root of 3 (2) f(x) = |x|

1.91x10^4 (or 19100) J is how many in Cal? I've tried these answers and they are all wrong: 4561.9 4.56x10^3 4562.0 4565 4569.4 4.57x10^3

Create a polynomial of degree 3 that has x-int at -1, 1, 3

Regarding conductivity: 1. If a solution has a high conductivity, it indicates that there are a lot of __________________ in solution. [Answer: ions] 2. Pure acetic acid does not conduct electricity, nor does pure water, but a mixture of the two does cond...

1. Write a quadratic function in intercept form whose graph has the given x-intercepts and passes through the given point. x-intercepts: 2,3 point: (4,2) 2. Write a quadratic function in standard form whose graph passes through the given points. (1,-2),(-...

Please check if the following conversation is correct: ¡Hola! ¿Como estas? Muy bien, ¿y tu? Fenomenal. ¿Qué hiciste el fin de semana pasado? Yo compré ropa nueva en la tienda el fin de semana pasado. ¿Qué compraste? Yo compré una nueva chaqueta y estos gu...

Palladium crystallizes with a face-centered cubic structure. It has a density of 12.0 g/cm^3, a radius of 138 pm, and a molar mass of 106.42 g/mol. Use these data to estimate Avogadro's number.

4 super tough chemistry questions: 1.) Water has a considerably higher boiling point and lower vapor pressure than other molecules of similar or larger molar mass. For example, dinitrogen (N2), methane (CH4), etc. all have lower boiling points and higher...

An aqueous solution contains 2.0 % NaCl by mass. (1) Calculate the molality (NOT molarity!) of the solution. (2) Calculate the mole fraction of the solution. I know how to solve both but the problem is missing one other compound/element. I know that molal...

Simplify: 1-m ——— m ————— m-1 — m

Solve the system of equations y=3x x^2-y=28

How do you say... 1. We brushed our teeth and ate breakfast. 2. We took the bus to the zoo.

How do I solve these? 1) 2sinxcosx-cosx=0 2) cos^2(x)-0.5cosx=0 3) 6sin^2(x)-5sinx+1=0 4) tan^2(x)+tanx-12=0

Prove it is an identity. (sin^2x)/(tanx)=sinxcosx

Verify the identity. sin2x/cosx + sinx = 2sinx Solve for all values of x: 6cos2x-7cosx-3=0 If f(x)=cos1/2x-sin2x find the value of f(pi)

How do you factor this completely? 6x-x^3-x^2

Difficult conversion problem---imgur*com#Ojmb7*jpg (replace * with . and # with / to get proper URL...sorry about the extra work but this site isn't letting me post links)

I have already solved 2 out of 3 questions: Your spaceship lands on an unknown planet. To determine the local value of g, you ask a steel-toed crew member to kick a stone, and you find that if she kicks it at 16.0 m/s at various angles, the maximum range...

An air-conditioner unit is fastened to a roof that slopes upward at an angle of 37.0 degrees. In order that the unit not slide down the roof, the component of the unit's weight parallel to the roof cannot exceed 560 N. What is the maximum allowed weight o...

A shell is launched at 140 m/s 56.0 degrees above the horizontal. When it has reached its highest point, it launches a projectile at a velocity of 110 m/s 35.0 degrees above the horizontal relative to the shell. 1) Find the maximum height (in m) about the...

How would I approach this problem? What formula would I use to answer each part? Thank you in advance for any guidance... As part of the launch of the space shuttle, solid-rocket boosters (SRBs) first take it to an altitude of 45.0 km while they accelerat...

A current of a river flows steadily from west to east at 1.00 m/s. A boat in the river travels at 3.00 m/s relative to the water. The river is 20.0 m wide with parallel banks. The boat leaves the shore at point A, and point B is directly across the river...

I solved part A but not part B: A batted baseball leaves the bat at an angle of 35.0 degrees above the horizontal and is caught by an outfielder 370 ft. from home plate at the same height from which it left the bat. Part A: What was the initial speed of t...

Some sliding rocks approach the base of a hill with a speed of 11.0 m/s. The hill rises at 44.0 degrees above the horizontal and has coefficients of kinetic and static friction of 0.410 and 0.630, respectively, with these rocks. 1) Find the acceleration o...

what are some major characteristics in the eastern hemisphere?

Can anyone answer part 3 for me? I've tried so many incorrect answers that I've already given up: 1.00, 1.50, 2.00, 3.00, 9.40 Question: A slingshot obeying Hooke's law is used to launch pebbles vertically into the air. You observe that if you pull a pebb...

My answer was 19.8 cm but it was incorrect. A basket of negligible weight hangs from a vertical spring scale of force constant 1500 N/m. If you suddenly put a 3.00 kg adobe brick in the basket, find the maximum distance that the spring will stretch. Answe...

That neighbor's pesky kid now has new missiles that make elastic collisions. He insists on throwing 25.0 g rocks at your new 2.25 kg light fixture hanging by a 26.0 cm wire from the ceiling of your porch. If each rock strikes the fixture traveling at 10.0...

When the following equation is balanced the coefficient of CaO is ... CaO + P4O10 > Ca3(PO4)2

What is the percent composition of O in C8H8O3

The football is kicked over the goalpost with an initial velocity of vA=32 m/s as shown. Determine the point B (x,y) where it strikes the bleachers. type this question to google to find the figure. please and thank you.

Three blocks of masses 8.2 kg, 5.88 kg, and 2.19 kg are connected by light strings that pass over frictionless pulleys as shown in the ﬁgure. The acceleration of the 5.88 kg block is 2.18 m/s 2 to the left and the surfaces are rough. The acceleration of g...

What are 2 causes and 2 effects of the development of ancient civilizations in the Middle East.

The player kicks a football with an initial speed of v0 = 98 ft/s. Determine the two possible values for the angle of the kick, theta. The distance of the football field is 126 ft. Also determine the corresponding time at each of these two angles.

Find the volume of a square pyramid with a base length of 9 cm and a height of 4 cm. 324 cm3 108 cm3 36 cm3 152 cm3 miss sue do you think it could be c

A basket contains the following pieces of fruit: 3 apples, 2 oranges, 2 bananas, 2 pears, and 5 peaches. Jonas picks a fruit at random and does not replace it. Then Beth picks a fruit at random. What is the probability that Jonas gets a peach and Beth get...

3,4,9,12,16,18 two integers are related if they share a factor other than 1. which of the following numbers is related to every number in the list above. A 10 B 9 C 6 D 4 E 3 Is it 10? Since like 30,40,90,120,180 all have factor of 10?

alex estimates that if he lies in the sun for k hours it will take him (10+10k) to get to sleep at night because of the sunburn . If Alex wants to get as much sun as possible without taking more than half an hour to get to sleep, how many HOUR CAN he lie...

if the sum of the positive integers x and y is 12 then x can be equal to all of the following except 5y 4y 3y 2y y

In a circle gray showing world population of aluminum, what is the measure of the central angle of the sector representing a country that produces 4/15 of the total world production of aluminum? A 26 B 60 C 85 D 92 E 96

when a number is multplied by itself the result is equal to 7 times twice the number. What is one possible value of the number So n^2= 7 x 2n? Then can't 0 be one?

5 kg cart is at the bottom of a 10 m hill. For the cart to reach the top of the hill, what is the minimum kinetic energy of the cart?

From 1990-1994 the mail order sales of health products can be modeled by S= 10t^3+115t^2+25t+2505 where S is the sales (in millions) and t the number of years since 1990. In what year were about $3885 million health products sold.

Calculate the enthalpy of reaction for the combustion of ethene.

If 0 is t when the year is 1982, what would be the value of t in 1990? How many years is that? From 1982 to 1992 the cost of the manufacturing a PC has decreased by about the same percentage each year. The cost, C (in dollars), in year t can be modeled by...

The probability of being attacked by a shark is approximately 1 in 4,000,000. The probability of being struck by lightning is approximately 1 in 80,000. How many times more likely is it to be struck by lightning than attacked by a shark? a. 5 Selected: b....

A set of data is NOT NORMALLY DISTRIBUTED. The mean is 300, and the standard deviation is 10. According to Chebyshev's Theorem, atleast what percent of the data would lie between 270 and 330? The farthest I got was 1- 1/10squared x 100% = .99, I am not su...

A 810.0 kg pink grapefruit is accelerated horizontally from rest to velocity of 11.0 m/s in 5.00 seconds by horizontal force. How much work is done on the pink grapefruit assume no function?

The Panama Canal cuts through a.) the Andes Mountains. * b.) the Central Plateau. c.) the Isthmus of Panama. d.) the Atacama Desert

Write the quadratic equation whose roots are −4 and 6, and whose leading coefficient is 5.

Which answer best describes why some view the senate as undemocratic? The vice president is the leader of the senate.***** The senate and the house don't have the same powers. Everyone living in the state can can vote for that states Senate regardless of...

When entering science lab, which of the following should be done by science students? Students should start working on their experiment. Students must talk to their lab partner to see what they need to do next. Students must wait for their teacher to give...

Reuben deposited $2000 into an account with a 3.8% annual interest rate, compounded semiannually. Assuming that no withdrawals are made, how long will it take for the investment to grow to $3000?

a line passes through the point (-4,6) and has a slope of -5/4. Write an equation in point-slope form for this line.

Find an equation of the circle that has center (-3,6) and passes through (4,-1)

suppose that $3500 is borrowed for three years at an interest rate of 4% per year. compounded continuously. find the amount owed, assuming no payments are made till the end. Round to the nearest cent.

Convert the rectangular equation to an equation in (a) cylindrical coordinates and (b) spherical coordinates. 4(x^2 + y^2) = z^2

how much should be invested now at an interest rate of 6.5% per year, compounded continuously, to have $3000 in 4 years? do not round any intermediate computations and round answer to nearest cent.

For questions 1-10 choose the letter of the answer that matches the description. Not all letters will be used. A. sectionalism B. Missouri Compromise C. Andrew Jackson D. John C. Calhoun E. Articles of Confederation F. cabinet G. tariff H. treason I. Dani...

Which of the following illustrates how fossil fuels can be conserved? A.) driving more frequently B.) developing more coal-burning power plants. * C.) reducing electrical use Can someone check this please?

Note: For questions 20 and 21, your teacher will grade your responses to ensure you receive proper credit for your answer. 20. Complete the table. a) 5 6 7 8 9 b) 3.8 4.6 5.4 ? ?

3. Fruits and vegetables are good sources of (Select all that apply.) (2 points) A) carbohydrates. B) fats. C) proteins. D) fiber

According to this chart, what is one result of the federal reserve sharply decreasing the discount rate? a. deflation occurs as the economy expands b. deflation occurs as the economy contracts c. inflation occurs as the economy expands******* d. inflatioo...

Which best reflects the shift in south Carolinas population since the 1950's A. the population has increased and became more urban B. Rural areas have seen greater population growth than urban C. the population of urban areas has decreased. D. urban and r...

How does the size of an object impact gravity? A.) The objects closer to the Sun have more gravity. B.) The smaller the mass of an object the more gravity it has. C.) Size does not impact gravity. * D.) The larger the mass of an object, the more gravity i...

Which of the following statements best summarizes Washington’s viewpoint on American foreign policy? (1 point) The United States can take advantage of Europe’s ambition. The United States should limit interaction with Europe to commerce, or trade. Europe’...

Bob took out a bank loan for 60 000 that must be repaid with regular monthly payments of $1000. The bank charges him an interest rate of 3.0% compounded monthly. How many payments will Bob have to make to pay off the loan? a) 70 b) 59 c) 72 d) 66 I got B...

a person has total assets = 1646.08 calculate the net worth a) 3257.14 b) 33.57 c) -3257.14 d) 1038.10

point r has coordinates (a,b). the point is reflected across the x axis and then translated 5 points to the right to create point s. Create an expression that represent the y coordinates of point s

explain how the Scopes Trial was a reflection of the 1920s cultural clashes and evidence of a changing society

Which is a better shape for an icecube; a cube, sphere, or cylinder? im thinking cube because then its harder for the sun to get on all sides of it, which would make it melt faster. Does that make any sense?

why is a spheres volume to surface area ratio the lowest out of a sphere, cylinder, and a cube? this is part of how im going to do this big project im doing, and i know a sphere has the smallest one, im just not sure why

Surface Area: 4r^2 41.25^2 S.A= 19.6 inches^2 Volume: 4/3r^3 4/3 1.25^3 V=8.2 inches^3 could someone check my math?

1. Why can certain stars sometimes be identified as eclipsing binary stars? A. They are brighter than any single star B. They are all white dwarfs C. They become dimmer at regular intervals D. They are cool red stars

Does the data in the table represent a direct variation or an inverse variation? x - 1, 2, 5, 10 y - 40, 20, 8, 4 A.) Direct variation; y = 40x B.) Inverse variation; xy = 40* C.) Inverse variation; xy = 1/40

Identify which characteristics were associated with Egyptian gods. (Select all that apply) A: Deities were only male. B: Deities controlled all aspects of life. C: Deities could be either kind or hostile toward humans. D: Pharaoh was a god himself. E: Dei...

Your class is selling boxes of flower seeds as a fundraiser. The total profit p depends on the amount x that your class charges for each box of seeds. The equation p equals negative 0.5 x squared plus 36 x minus 134 models the profit of the fundraiser. W...

Hey, hot question real quick. I am doing Functions in Algebra and I kinda need help. So the function I have is **g(x)=x^2-9** and I have to evaluate **g^-1(x)**, but my question is how does the exponent go in front of the numbers? What does that mean? I k...

If 38.5 mL of 8.9 ✕ 10-3 M HBr is added to 27.0 mL of 4.6 ✕ 10-3 M LiOH, what is the pH of the solution?

When 23.5 mL of 0.12 M HCl are added to 50.0 mL of a 0.15 M solution of a weak monoprotic base, the pH of the solution is 10.00. What is the Kb of the weak base?

find the average acceleration (m/s^2) The formula is a=v2-v1/change in time I don’t understand how to solve this since I only have the average time and distance in (m) for the marble Please explain using steps I’m really stuck

Calculate the pH after 0.014 mole of gaseous HCl is added to 227.0 mL of each of the following buffered solutions. (Assume that all solutions are at 25°C.) (a) 0.089 M NH3 and 0.17 M NH4Cl (b) 0.74 M NH3 and 1.25 M NH4Cl

Q: Calculate the pH of a solution that is 0.56 M HC3H5O3 and 1.28 M NaC3H5O3. I used the H-H equation for this and got this so far: HC3H5O3 acid NaC3H5O3 base pH = pKa + log([NaC3H5O3]/[HC3H5O3]) = -log(Ka of HC3H5O3) + log(1.28/0.56) = -log(1.4*10^-4) +...

Rank the following 0.10 M solutions in order of increasing pH. (Use the appropriate <, =, or > symbol to separate substances in the list.) HONH3NO3, HOBr, RbNO3, RbOH, HNO3, HONH2, RbOBr HONH3NO3 (?) HOBr (weak acid, so lower pH value but higher than base...

Q: Find the antiderivative F of f(x)=4−3(1+x^2)^−1 that satisfies F(1)=−9. I got 4x-3arctan(x), but it still seems to be incorrect, and the hw doesn't care for constants (like +C at the end). Am I missing something?

i need help with the sample work Exponents and Exponential Functions Unit Review

A car drives down a road in such a way that its velocity (in m/s) at time t (seconds) is v(t)=2t^(1/2)+3. Find the car's average velocity (in m/s) between t=5 and t=8. ---- So I used integrals for this and put ∫2t^(1/2)+3 and got 4/3(t^(3/2))+3t. Then I s...

Lesson 10: Exponents and Exponential Functions Unit Test

Q: The value of ΔS° for this reaction is 177 J/K. At what temperatures is this reaction spontaneous at standard conditions? Assume that ΔH° and ΔS° do not depend on temperature. I got 300.768 K through dG = dH-TdS and T=dH/dS but it's still incorrect. The...

Answers

The following answers were posted by visitors named ..

So you can be more evolved and advance

are all the "?" the same so would it be like (8 [] 5) [] (6 [] 2 )= 8 or (8 i 5) i (6 i 2 )= 8

WHATS THE Definition OF A COAST ?

A sealed flask containing 1.0 mole of H2(g) and a sealed flask containing 2.0 moles of He(g) are at the same temperature. The two gases must have equal 1. masses 2. volumes 3. average kinetic energies 4. numbers of molecules

Hello, I finally got it after like an hour and a half of trying. Basically, it gave the pressure, volume, and temperature and was asking what the new pressure is after reducing the volume and increasing the temperature. So happy I finally got it. :)

Thank you, bobpursley! Got the answer - .653

And what is the domain of gºf(x)?

Hi, DrBob222! Here's what I got for: (a) 69.44 g/mol (b) 46.4 g M/mol O I don't understand how to use those two information in order to determine the empirical formula (question (c)). I'm guessing it's some sort of ratio but I don't know how to use the an...

OK, so the formula is: (c) M2O3 ...and the identity and atomic mass of the metal M is: (d) Chromium which has a 51.9 amu Did I get the answers right?

Eh, so what is the answer - Ga2O3 (basing it on the atomic mass of part (a))?

Great! Thank you so much for all the help, DrBob222!

Yup, as it turns out: cal = calorie Cal = big calorie / kilocalorie No wonder my answers were all wrong - I was converting to calorie instead of kcal! The correct answer was 4.57 Cal.

DrBob222, thank you so much for the very detailed information!

I got lost. :( I got: a=390 ...and when I cubed that, I got a number that was too big so I figured that was wrong. What did I do wrong?

1, 2, and 3 I have no answers. I've been staring at my monitor for 47 minutes now and I'm not coming up with any answer. As for no. 4, I think it's because water protects/shields the fruit. Actually, I think my answer for no. 3 is because steam has heat w...

So how many grams and moles of water will I use? I know water is missing compound and for the molality calculation, how many will I use? 1 gram and then covert that to kg? How many moles will I use? One mole?

Nevermind, I got it. It was simply 100g minus 2g of NaCl (mass of the solvent, water).

u should use the seel format

1/2(1/5Ve)^2 = 1/2 * 1/25 * Ve^2 = 1/50Ve^2

thank you so much! <3 =))))))))))

A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.7 kg m-3. Under these conditions the total surface area of the balloon is 0.52 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Ca...

A latex balloon, wall thickness 3.091 x 10-4 m, contains helium at a concentration of 0.7 kg m-3. Under these conditions the total surface area of the balloon is 0.52 m2. The diffusion coefficient of He in latex at room temperature is 4.9 x 10-9 m2s-1. Ca...

The Miami Heat has recently played. Use Google for more info.

That makes so much sense now, thank you.

did you ever get the answer?

u aint cool u don't know anything u GOT IT WRONG!!!!!!!!!!!!

n.scott momaday

convection and conduction

there all right

B D C C A D B A C D 100% 4 sure

correct.without parenthesis sign will not change ..and with parenthesis the - sign are also raised by the exponent

Thank you so much!

That is what I had and the question is online but it was marked incorrectly, now I have 50% in that test.

For one, the urinary bladder holds the urine until it can be excreted. For the second, the integumentary system includes that special layer of fat in the hypodermis. This fat is one of the things to keep you warm. If that was lacking you would definitely...

1. B 2. A 3. C 4. B

thanks for saving me from the f ttng and S

ddb is correct!

b d c b is right

^ just got 100%

What was happening in this answer section?

The Isthmus of Panama?

is y=5(x+4)(x-6) the final answer or do i have to do anything else to that

Thank I don't have a name I got a 100% :) ;3

2. is political power?

Also: A student hypothesizes that a goldfish will be more active in a bowl that has red gravel than in a bowl with grey gravel. To test this hypothesis, the student places one goldfish in a bowl with red gravel and another goldfish in a bowl with grey gra...

Same with this one "direct object" Players usually kick or "head" the ball to their teammates on the field. (1 point) ball .... Teammates field None

Would number 1 be d Ms.Sue

Someone important is right THANKS

BAB and does everyone go to connections

Are your answers right?

The ratio between the area and the perimeter of a rectangular sheet of paper is 7:5.if the area of the sheet is 38.5cm² find its perimeter

I got them right, except on #5 the answer is B.

Those answers are correct C A B

Oh? Would it be C then, because I doubt it would be A.

Use the following method: Mass Formula Mass Moles Divide by smallest ratio Ratio

Thank you but I don't know the answer. Can you help?

Thanks, that makes sense!! :)

NOT right AT ALL!!!

NOT right AT ALL!!! its A B A B C C B B C C B B A C B A A C

some of us realy need these answers. posting the wrong ones isnt funny it just makes u look stupid.

Thanks Is the first one B? It was my second choice.

I disagree with a lot of you. The link Ms. Sue gave helped me completely. Are you here looking for an answer? Maybe you should read what Ms. Sue sent unless reading is really that hard for you. You're in 8th grade (at least im doing this problem in 8th gr...

The measurements of two angles - Many triangles The measurements of two angles and the length of the included side - Only one triangle The measurement of all angles - Many triangles The lengths of two sides and the measurement of the included angle - Only...

This does not show enough steps or how to got the numbers for the second equation. This sucks

are you sure? hmm. I was almost positive about b

yeah. we got that Ms. Sue. lol

thats not right it's b

What is conservation of mass

So far I've narrowed it down to 2 answers. C and D and I don't know which one.

anyone know all the answers??

okay thank you (:

Then what is it?

I just added in the numbers to the formula and 59 just appeared so i just assumed that was it lol

thats why im asking you for help because idk mate

Sorry the liabilities is $4903.22

Duh thats what she said

Identidy Property of Addition

I think you put the numbers in wrong. 25 3/8 and 25 2/8? seems obvious which one is greater