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Questions (463)

CH3CHO decomposes into methane gas and carbon monoxide gas. This is a 2nd order reaction. Rate of decomposition at 140 degrees
1. 1 answer
2. 1,389 views
Determine the final temperature when 10g of steam at 100C mixes with 500g of water at 25C.I have 4.184x 10(100-x) + 40700 x 10=
1. 1 answer
2. 937 views
Find the number of disintegrations per minute emitted by 1.1 mol of 232-Th in 1 min. The half-life of 232-Th is 1.4 x 1010 yearI
1. 1 answer
2. 1,950 views
I don't understand this problem:(1/2)n = 0.015625 n log 0.5 = log 0.015625 n = log 0.5 / log 0.015625 n = 6 When I plug log .5
1. 1 answer
2. 1,422 views
solve the equation 5x^2=19x+4 X=
1. 1 answer
2. 321 views
Find the number of decibels for the power of the sound. round to the nearest decibel. A rock concert, 5.35x 10^4 watts/cm^2
1. 1 answer
2. 493 views
I need to derive a net ionic equation after balancing:NA2PO4 (2-) +HI =? what I have so far is NA2Po4 +2HI = 2NAI +H3PO4 I can't
1. 4 answers
2. 1,243 views
the arc length of AB is 2^pi ft. find the radius of the circle ABC=43 degree. round your answer to the nearest hundredth.
1. 1 answer
2. 444 views
I need help on a problem that's on formula for circumference. A circle has a circumference of 36 cm. find it's radius .but it
1. 1 answer
2. 566 views
I don't know if I should be posting this on a new session or just the old one; I asked it yesterday and I have not seen a replyI
1. 0 answers
2. 499 views
I have: the half life of U-238 is 4.5 x 10^9 yr. A sample of rock of mass 1.6g produces 29 disintegrations per second. find
1. 1 answer
2. 1,917 views
A 1.50 liter gas sample at 745mm HG and 25 celsius contains 3.55% radon by volume radon-220 is an alpha emitter with a half life
1. 2 answers
2. 1,192 views
An ice-cream parlor sells sundaes with 3 different types of ice-cream and 4 different toppings. They have 8 flavors of ice-cream
1. 0 answers
2. 744 views
Thank you Dr.Bob for your speedy reply-I also tutor in other subjects, but chem. is my nemesis.
1. 0 answers
2. 398 views
How many joules to vaporize 1.5 L of H2O at 19 degrees Celsius?
1. 1 answer
2. 335 views
a hyperbola is centered at (3,7). The vertices are (9,7) and (-3,7). The slopes of the aymptotes are m==/-5/6. Enter the
1. 0 answers
2. 464 views
Soo the equation is 25y^2-9x^2-200y-36x+139=0and for the center is got (2,4) and the vertices I got (2,7) and (2,1) But i cant
1. 0 answers
2. 425 views
A package with square ends has combined length and girth(girth is perimeter of a cross section) of 120 in. The surface area of
1. 0 answers
2. 494 views
a cylinder has a radius of r and a height of h. A rectangular box has a length of r, a width of h and height of h. Their
1. 0 answers
2. 428 views
the formula for the surface area of a cylinder is: A=2πrh+2πr^2 If the height of the cylinder is 10 inches, and the surface
1. 2 answers
2. 718 views
The formula for the volume of a cylinder is: V=πr^2*h If the volume is 432 cubic inches and the height is 8 inches, solve for
1. 1 answer
2. 534 views
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time
1. 0 answers
2. 664 views
If an object is thrown vertically upward with an initial velocity of v, from an original position of s, the height h at any time
1. 1 answer
2. 601 views
A rectangular piece of cardboard has length that is 16 inches more than the width. The area of the cardboard is 297 sq. in. Find
1. 2 answers
2. 729 views
A farmer has 120 ft. of fencing available to enclose 2 adjacent rectangular pens alongside his barn. NO fencing is required
1. 0 answers
2. 777 views
√3x-4=2√x-5Solve this equation, if there is more then one answer separate with a comma
1. 1 answer
2. 348 views
x= √3x+12+2
1. 1 answer
2. 256 views
√3x-4=2√x-5Solve this equation, if there is more then one answer separate with a comma
1. 0 answers
2. 322 views
Solve this equation:√4x+8=6 If there is more then one solution enter with a comma
1. 1 answer
2. 866 views
evaluate without using a calculator216 2/3
1. 2 answers
2. 768 views
SIMPLIFY: 3√(63x^5/(72y^6))Example to enter answer: n√b, enter (b)^(1/n) Example: For 4√3:2, enter 4(2)^(1/3).What is my
1. 1 answer
2. 611 views
How do i enter my answer?so the question is Simplify: √3:(63x^5/(72y^6)) and for my answer i got x√3:(7x^2/(2y^2)) but my
1. 3 answers
2. 572 views
√4:(32x^11y^15)/√4:(2x^3y^-2) for this equation i got =2x^2y^4√4:yand in my worksheet it says enter it: √b, enter
1. 1 answer
2. 459 views
√(21x^2y/(75xy^5)it says on my paper to enter it: √b, enter sqrt(b). For example: For 4√3 enter 4sqrt(3) Please help, I've
1. 1 answer
2. 632 views
An airplane flies 1050 km with the wind. In the same amount of time, it can fly 750 km against the wind. The speed of the plane
1. 0 answers
2. 1,007 views
Name this polynomial by its number of terms and degree.?√29x^6
1. 1 answer
2. 409 views
which property justifies this statementq+(r+s)=(q+r)+s a. communicative property of addition B. distributive property C.
1. 1 answer
2. 814 views
240,000,000x 0.000024/0.005simplify and convert to scientific notation
1. 2 answers
2. 432 views
Evaluate the expression.10x^3y^-5z^-2 if x=3, y=2, z=5
1. 0 answers
2. 368 views
which of the following are not polynomials?A. x^4+ πx^3+√2x B. 3x+x^4 C. 4x^3+2x^2+ √x D. 2x^3/5-x/3+π E.x/4-5/x+10
1. 0 answers
2. 421 views
The sum of two numbers is 100. One number is four more than three time the other number. What are the last numbers?
1. 3 answers
2. 429 views
Find (gº f)(-4)f(x)=-x^2+4 g(x)=2x
1. 1 answer
2. 286 views
Find the slope of the line containing these points. (1/8, 1/4) and (3/4, 1/2)
1. 1 answer
2. 1,117 views
Why does equilibrium shift to the left when AgNO3 is added to the equation Co(H20)6 (aq) + 4Cl- (aq) <---> CoCl4 (aq) + 6H2o(l)?
1. 1 answer
2. 2,430 views
The amount of time a bank teller spends with each customer has a populationmean of 3.10 minutes and standard deviation of 0.40
1. 1 answer
2. 1,143 views
The Tite Wire Company manufactures wires for circus acts. It has taken arandom sample of 100 pieces of wire and wants to see if
1. 1 answer
2. 514 views
The distribution of cash withdrawals from the automatic teller machine at acertain bank has a mean of $500 with a standard
1. 0 answers
2. 478 views
If 55% of a television viewing population watched a program called ¡§Name thatPoem¡¨ one evening, what is the probability
1. 0 answers
2. 1,052 views
Solve this formula for m. simplify your answer. S=H/m(a-b)
1. 1 answer
2. 389 views
two resistors are connected in parallel. Their resistances are 6 ohms and 10 ohms. What is the resistance, (R), of the
1. 1 answer
2. 676 views
A resistor has a resistance of 15 ohms. What size of resistor, (r2), should be connected in parallel with it to obtain a
1. 1 answer
2. 520 views
Solve this formula for r. Simplify your answer. E/d=R+t/rMake sure you use parenthesis around any polynomials in the numerator
1. 1 answer
2. 488 views
a motorboat can go 24 miles downstream in the same amount of time that it takes to go 12 miles upstream. The boats speed in
1. 1 answer
2. 534 views
How do I write the skeleton equation then balance the following (step by step):hydrogen+bromine---> hydrogen bromide
1. 1 answer
2. 625 views
If 55% of a television viewing population watched a program called ¡§Name thatPoem¡¨ one evening, what is the probability
1. 0 answers
2. 1,216 views
The distribution of cash withdrawals from the automatic teller machine at acertain bank has a mean of $500 with a standard
1. 0 answers
2. 485 views
The Tite Wire Company manufactures wires for circus acts. It has taken arandom sample of 100 pieces of wire and wants to see if
1. 1 answer
2. 580 views
(4x^3-3x^2+7x)/(x+1/2)Quotient and remainder
1. 2 answers
2. 459 views
(3x^4-5x^3+7)/(x+1)
1. 0 answers
2. 235 views
(3x^3+4x^2-7x+6) / (x-3)quotient and remainder
1. 1 answer
2. 310 views
What is an AA curve?
1. 1 answer
2. 604 views
(2x^3-x^2-48x+15)/(x-5)Divide and find the quotient and remainder?
1. 1 answer
2. 440 views
(4x^3-4x^2-x-3)divided by(2x^2-3)
1. 2 answers
2. 293 views
(4x^4-4x^2-x-3)divided by(2x^2-3)quotient an remainder?
1. 0 answers
2. 345 views
(3x^4-2x^3+4x-5) divided by (x^2+4)quotient and remainder
1. 0 answers
2. 327 views
(4-3/x^4)/(5+2/x3)Simpify, Leave in factored and reduced form.
1. 0 answers
2. 394 views
(5+3/x^2y)/(3+x/x^3y)Simplify. Leave in factored and reduced form. Put () around polynomials in numerator and denominator
1. 1 answer
2. 455 views
(4/y^2-1/y^3)/(2/y+3/y^2)Simplify. Leave answers in factored and reduced form. Put () around the polynomials on numerator and
1. 1 answer
2. 528 views
x^2/x^2+3x-10 - 1/x^2+8x+15Simplify Leave in factored form and put () around polynomials
1. 1 answer
2. 734 views
(5y+5)/(y^2^+7y+6)*(y^2^+4y-12)/(y^2^+3y-10)Simplify Leave answer in factored form. Keep () around binomial factors.
1. 1 answer
2. 658 views
Using the sociological perspectives: functionalism, conflict, symbolic interactionism and feminism, show how Facebook has made
1. 1 answer
2. 587 views
a chemist has an 18% acid solution and a 36% acid solution. How many liters of each of these solutions should be mixed together
1. 2 answers
2. 1,043 views
How do the three susytems law enforcemnt, cout, and corrections interact with each other?
1. 1 answer
2. 407 views
A board is divided into rectangles each 2/15 in long What is the length of one rectangle written as a decimal
1. 1 answer
2. 371 views
how do animals that live in different enviroments meet their need for efficent gas exhcange?I was thinking maybe through their
1. 0 answers
2. 487 views
A chemist ran the reaction and obtained 5.70 of ethyl butyrate. What was the percent yield?How do I solve this problem?
1. 1 answer
2. 1,601 views
Is 1,725+346 more or less than 2,000? Explain how you can tell without actually adding.
1. 4 answers
2. 230 views
Explain how you would use front-end estimation to subtract 189 from 643.
1. 4 answers
2. 505 views
Determine the final end (final) value of n in a hydrogen atom transition, if electron starts in n = 1 and the atom absorbs a
1. 2 answers
2. 1,182 views
During the first part of a trip, a canoeist travels 69 miles at a certain speed. The canoeist travels 2 miles on the second part
1. 1 answer
2. 482 views
What is the def. Of the word thing-a-ling how how to put it into a sentence. Can not find in dictionary.
1. 1 answer
2. 375 views
The diagonal of a tv screen is 21 in. The television's diagonal forms angle "m", which measures 50 degrees. What is the height
1. 2 answers
2. 540 views
a) f(x) = 4.1x +92.16b) f(x) = 17.9x + 19.36 c) f(x) = 8.8x + 55.4 ANSWERS: a) 4.8 b) 0.93 c) 2.2, i just have no clue how they
1. 2 answers
2. 2,374 views
a) f(x) = 4.1x +92.16b) f(x) = 17.9x + 19.36 c) f(x) = 8.8x + 55.4 ANSWERS: a) 4.8 b) 0.93 c) 2.2, i just have no clue how they
1. 0 answers
2. 385 views
Kosuke wrote a mathematics contest consistingof 25 multiple choice questions, the scoring system gave 6 points for a correct
1. 1 answer
2. 2,682 views
I have to examine at least two mental disorders and two mental illnesses from the perspective of psychology. Do you know of any
1. 2 answers
2. 541 views
2x-18=1/2x
1. 1 answer
2. 264 views
I am trying to understanding what is required " Identify one trend in global health and discuss how this trend may affect public
1. 1 answer
2. 577 views
Metropolis currently has $1,150,000 in cash. How long would it take them to accumulate $2,000,000 in cash? Assume an interest
1. 0 answers
2. 386 views
Solve the following equation:7m^2 = 12 - 17m If more than one solution, separate with commas
1. 1 answer
2. 470 views
If an equal force acts on the following objects, which will have the greatest acceleration:1) a golf ball 2) a football 3) a
1. 2 answers
2. 1,705 views
SOLVE:(3x-5)^3 that's to the third power
1. 4 answers
2. 397 views
solve using any method and identify the system as consistent, inconsistent or dependent. 3x-4y=86x-2y=10 I want to use
1. 1 answer
2. 1,015 views
A coin jar contains nickels, dimes and quarters. There are 46 coins in all. There are 11 more nickels than quarters. The value
1. 6 answers
2. 980 views
Susan Sharp is a 35year old lady who has recently been diagnosed with diabetes.She is overweight and smokes.She is aware that
1. 3 answers
2. 543 views
How do I calculate a present value?7,000 in 5 years at a quarterly discount rate of 6% I have looked at the material, but I am
1. 0 answers
2. 373 views
Present value,How do I calculate the present value of: 7,000.00 in 5 years at a quarterly discount rate of 6%? I have read over
1. 0 answers
2. 439 views
Why is time such an important factor in financial matters? How does the frequency of interest compounding, regardless of the
1. 0 answers
2. 924 views
If 24% of your monthly pay is withheld for federal income taxes and another 6% is withheld for Social Security, state income
1. 2 answers
2. 513 views
If 24% of your monthly pay is withheld for federal income taxes and another 6% is withheld for Social Security, state income
1. 1 answer
2. 578 views

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