Richard

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

Questions

The following questions were asked by visitors named Richard.

1. Would you expect ibuprofen to be soluble or insoluble in 1.0 M NaOH? Explain. 2. Thymol is very slightly soluble in water and very soluble in 1.0 M NaOH. Explain. Any info. would help! Below are two web pages. The first shows ibuprofen has a -COOH grou...

I' am currently trying to wrie a couple of lab conclusions and having a hard time coming up with good points to make for the following lab experiment: Thin layer chorotography If anyone has a few minutes to give me a couple tips on how to improve this. I...

If 0.130 g of p-aminophenol is allowed to react with excess acetic anhydride , what is the theoretical yield of acetaminophen in moles? In grams? p-amino. - MW: 109.13g aceta. - MW: 151.16 g ** I just forgot how to do this, I know it's probably REALLY sim...

why is it easier to remove excess acetic acid from the products than excess isopentyl alcohol? from the products of what? Did you perform an experiment in class and this is one of the lab questions? If so you will need to explain what you did in some deta...

Consider a system of three molecules A, B, and C. Suppose that three units of energy can be distributed over the three atoms. Each atom can have no energy, one unit of energy, two units of energy, or all three units of energy. Assume that each of the ten...

Reading the book Twilight by Stephenie Meyer. Will have to write book report in class 11/13/07. Has anyone read the book and written a book report on it.

Name all the land features such as mountains, plains, deserts etc.

Why did King George III taxed the colonists?

How do scientists separate aniamals into classes?

Hello! Please help me out here. How do you find the circumference of something when you of 13in as your radius? Please answer this question.

If f(x)=4x-5 find the value. f(c) f(3a2)

An upright spring which is normally 3 m is compressed 2.3 m and a 2 kg block is placed on it. When it is 5 meters above the ground it is going 10 m/s. What is the spring constant of the spring? How high will the block travel?

Maria left the starting line at 8:30 a.m. and drove at an average rate of 40 mph. What time did she arrive at check point 1?

A small block of mass 5 kg initially rests on a track at the bottom of a circular, vertical loop-the-loop, which has a radius of 0.8 m. The surface contact between the block and the loop is frictionless. A bullet of mass 0.7 kg strikes the block horizonta...

Can some body help me to explain how DNA is formed?

I need to find the missing length of a right angle if one side is 7 and one is 25?

Write 116 2/3 as a fraction or mixed number.

% increase in mean population from 1950 = 2,556,000,000 to 2000 = 6,279,000,000 =

The typical ratio for a carbohydrate is a) CHO b) C2HO c) CH2o d) CHO2

THis is also known as an alchohol. a)hydroxyl group b) amino group c) phosphate group d) carboxyl group

Is The factors of 385 = 1,5,7,55,77,385?

They are__________Mol of carbon atoms in 4 mol of Dimedthysulfoxide A: 2 B: 6 c: 8 D: 4 E: 3 My answer is C:8 but can any one help me with the method to show the right answer. 2. There are ___________Sulfur atoms in 25 molecules of c4H4S2. My answer is 50...

First Estimate the answer. Then find the exact answer. Simplify your answer if possible. 2*1/3*15

Lithium hydroxide reacts with carbon dioxide as follow. 2LiOH + CO2________ Li2CO3 + H2O What mass (in grams) of Lithium hydroxide is need to react with 11 g of carbon dioxide?

: When the mass hits the pile, it has kinetic energy. This energy is transformed into other forms of energy as the speed of the falling mass rapidly reduces to zero. As this happens, the pile is forced a small distance into the ground. question: Explain h...

1.predict and expalain the order of melting point for propanol, butane, and proanone with refernce to their intermolecular forces. 2. The element sodium, aluminum, silicon, phosphrous, and sulfur are in periods 3 of the periodic table. Decribes the metall...

.predict and expalain the order of melting point for propanol, butane, and proanone with refernce to their intermolecular forces.

1.Use the Vsepr theory to predict and explain the shape and bond angle of each of the molecules SCI2 and C2CL2. 2.Deduce whether or not each molecule is polar, giving a reason for your answer...Any help please??

1. Which two elements react vigorously with each other? A: Chlorine and lithium B:Chlorine and potassium C:iodine and lithium D:iodine and potassium my answer is B 2. which statement about electronegativty is correct. A: Electronegativity decrease across...

Trains A & B are traveling in the same direction on parallel tracks. Train A is going 60mph and Train B at 80mph. Train A passes a station at 6:25 am. If Train b passes the same station at 6:37, what time will B catch up with A? The answer I received is:...

Media service charges $20 for a phone and $30/month for its economy plan. The equation c=30t +20 describes the total cost,c, of operating Media Services phone for t months. A) The total cost for 8 months of service is? My answer $260 If a customer has onl...

The width of a rectangle is fixed at 16 cm. What lengths will make the perimeter greater than 78cm? Would the answer be 23 because 16*2+23*2=78cm or would the answer be 24. Because the perimeter is greater than 78cm

Having trouble determ the formulas for the follow problems. 2. If an automobile travels at 30 km/hr. for 2 hours, how far does it go? 60 km 3. At time = 0 an automobile already traveling at 30 km/hr. accelerates at 3m/s2 for 2 seconds. During these two se...

How does a derivation differ from an experiment or a theory?

I am an odd multiple of 50p. My number of £s is double 18. What am I?

Where should most of the mass be for an industrial fly wheel? Why? can't find any thing about this in my book. need help answering this.

According to table 1.3, what volume of iron would be needed to balance a 1.00cm3 sample of lead on a two pan laboratory balance? Table 1.3 shows densities g/cm3 such as iron=7.87g/cm3 and lead is 11.4g/cm3

how much would a 80.0kg person weigh on mars if the acceleration of gravity is 3.93m/s2

how much would a 80.0kg person weigh on earth where the acceleration of gravity is 1.63m/s2

A chain composed of four identical links is suspended by a rope and does not move. What are the forces on each chain? (include where they come from)

A square made by a length of string 8 cm long is reshaped into a circle. What is the circumference of the circle

f(x)=ax+b f(-2)=27 and f(1)=15 find the value of x when f(x)=-5 how do you work this out?? thanks so much

Hi! is my answer correct? Consider the following chemical reaction: H2 (g) + I2 (g) <> 2HI (g) At equilibrium in a particular experiment, the concentrations of H2, I2, and HI were 0.15 M, 0.033 M, and 0.55 M, respectively. The value ofKeq for this reactio...

Two boxes are similar. The larger box has a volume that is 64 times the volume of the smaller box. What is the ratio of the larger box's height to the smaller box's height? write the fraction as a decimal

what are the coordinates of the points at which the slope of the function with the equation y = x^4 - 8x^2 is equal to zero ?

The surface area of a cylinder is 200cm. The diameter is equal to the height. Find the radius.

What volume of dry hydrogen would be produced under standard consitions when 0.250g of magnesium reacts with excess HCl?

A gas has a volume of 50.0 cm3 at a temperature of -73°C. What volume would the gas occupy at a temperature of -123°C if the pressure stays constant

Calculate the number of moles of FeSO4 in 25cm3 of a 0.2mol dm3 solution

solve by the elimination method: 9x-9y=18 7y-3x=-8 please solve step by step thank you for your help

What is the maximum total force exerted on a 78 kg astronaut by her seat during the launch of the Space Shuttle?

Radio waves travel at the speed of light, which is 3.00 108 m/s. What is the wavelength for a FM station broadcasting at 105.9 MHz (the prefix M is "mega" and means 106)?

How long is a wavelength of infrasound with a frequency of 4 Hz?

What is the fundamental frequency for a 62 cm banjo string if the speed of waves on the string is 470 m/s?

If I borrowed $78,000 from a bank and had perfect credit; How much interest would I have to pay in Dollars and cents? The loan is for 7 years

If Galileo and his assistant were 16 km apart, how long would it take light to make the round-trip? How does this time compare with reaction times of about 0.4 s?

What minimum strength of magnetic field is required to balance the gravitational force on a proton moving at speed 6*10^6 m/s?

Find a confidence interval for ƒÊ assuming that each sample is from a normal population. a. P x = 14, ƒÐ = 4, n = 5, 90 percent confidence b. P x = 37, ƒÐ = 5, n = 15, 99 percent confidence c. P x = 121, ƒÐ = 15, n = 25, 95 percent confidence Need to s...

The solution to this i believe is no solution need help. -2x+2>-2x-3

14 metres of rope costs €9.52. If Joe bought 21 metres, how much change out of €20.00 do Joe get? Is there a shorter way of doing this other than dividing, multiplying and then subtracting?

The Deborah Heart Institute performs many open-heart surgery procedures. Recently research physicians at the Institute developed a new heart bypass procedure that they believe reduces the average length of recovery. The hospital board will not adopt the p...

I need help in Science Project. The topic is called "How does the size affect the force of magnetism". I didn't see any procedure in how to do this particular topic can you help me?

Do the equations x = 5y + 3 and x = 5y – 3 have the same solution? How might you explain your answer to someone who has not learned algebra? 200 words or better

A que ball dropped from a third floor window will reach what speed/velocity? Is that high enough to reach terminal velocity?

A salesperson sold 4 cars for a total value of 54,000 dollars. Her co-worker sold 8 cars for a total the value of d dollars. Write an algebraic expression that represents the combined value of the cars sold by the salesperson and her co-worker?

f(x)=(24x3+68x2+24x−32)/(4x3+56x2+236x+280) I need help finding the roots and the hole for this problem.

solve by elimination: 6a+2b = -48 -6a+b = 57 What is the solution set ( , )?

A 345N load is suspended from a cable. What is the acceleration of the load if the tension in the cable is 275N£¿

You have a 40 inch wheel tow 20 inch wheel to a 5 inch wheel how many revolutions does the 5 inch wheel have to make to make the 49 inch wheel rotate 1revolution?

A bead slides without friction around a loop- the-loop. The bead is released from a height of 12.9 m from the bottom of the loop-the- loop which has a radius 4 m. The acceleration of gravity is 9.8 m/s2 . A 4m 12.9 m What is its speed at point A ? Answer...

A 224 g particle is released from rest at point A along the diameter on the inside of a fric- tionless, hemispherical bowl of radius 44 cm. The acceleration of gravity is 9.8 m/s2 .

Differenciate between speed and velocity

There are ten equal parts to a circular track for 2 toy cars and the distance from the inner to the outer is 3.4 inches. What is the width of the track?

A production process produces an item. In a recent study, the company found that 20% of all items produced were defective. Each item is inspected before being shipped. 10% of the items were misclassified( labeled as defective when they were good or labele...

Hannah is comparing a rock from a riverbed and a rock from deep underground. One is very smooth, and the other has very rough edges. Explain why each rock was probably found in that location.

A(n)=A(n-1)-4;a(1)=8

A ladder, 5.0 m long, leans against a frictionless wall at a point 4.0 m above the ground. A painter is climbing up the ladder. The mass of the ladder is 12.0 kg and the mass of the painter is 60.0 kg. The ladder begins to slip at its base when the painte...

What would the ratio be if the first triangle has sides of 4cm, 8cm, and 12cm and the second triangle had sides of 1cm, 2 cm, and 3 cm? Would the ratio be 4:1 or 1:1/4?

What is the value of each of the angles of a triangle whose sides are 95, 150, 190 cm in length? I have tried to do this problem, don't get me wrong, but I don't really know where to go. Can someone tell me how to even approach this problem? The textbook...

In Triangle ABC, a=15cm, c=9cm, and angle C= 35 degrees. Find b and angle b. (Recall sin theta= sin (180 degrees-theta). I'm not sure how to approach this.

A ball is rolling on a table and leaves the end side of the table with a velocity of 1.5 m/s. The table is 0.70 m high and the ball has a mass of 0.850 kg. What's the speed of the ball when it hits the ground? What equation should I use?

A cell exhibits a standard Ecell of 0.35V at 298K. What is the value of the equilibrium constant for the cell reaction if n = 2?

Part 1 of 2 Write the balanced molecular equation for the reaction between iron metal (the nail) and aqueous copper II sulfate and classify this reaction. Include the states: solid (s), liquid (l), aqueous (aq), or gas (g). Use your observations to help y...

The following questions relate to the chemical equation shown below. Since this is a multi-stage question, be sure to write down the balanced equation and the values for deltaHo and deltaSo before proceeding. A2(g) + 3 B2(g) → 2 AB3(g) deltaHo = -217 kJ m...

Hi! I need help with this practice problem. My teacher gave us the answer, "2cot u" BUT she wants us to figure out why that's the correct answer. I'm having some trouble with this and could really use some help. Thank you! Problem: 1+ sec u/tan u - tan u/...

A cable is 32 feet 10 1/2 inches long is to be cut into 8 1/2 inches lengths. Allow 1/16 inch for each saw cut.

The sum of three consecutive natural numbers is 966. Find the numbers.

Hi! I'm trying to find a lit device for this quote. This quote is from "The Story of An Hour" by Kate Chopin. I'm struggling to find a lit device. So far I've come up with "contrasting diction" but I'm trying to find an even stronger one. Passage: “There...

A child's desk is made so that the dimensions are two-thirds the dimensions of a full-size adult desk. Suppose the top of the full-size desk measures 54 inches long by 36 inches wide. What is the perimeter and area of the topof the child's desk?

A layer of transparent plastic (n=1.61) on glass (n=1.52) looks dark when viewed in reflected light whose wavelength is 589 nanometers in vacuum. Find the two smallest possible nonzero values for the thickness of the layer. Answers are 183 nm and 366 but...

There are 40 vehicles in a parking lot. Twenty percent of the vehicles are pickup trucks. How many pickup trucks are in the parking lot?

A Ball Of Mass 0.25kg Losses Half Of Its Velocity When It Makes A Head On Collision With An Identical Ball Q At Rest.After The Collision,Q Moves off with a speed of 2m/s in the original direction of p.calculate the initial velocity of p.

a map with a scale of 1cm to 5km has an area of 405cmsquare. what is the actual area of this map on the ground?

Explain how you can tell the function is not linear by using points on its graph. Make sure to include in your answer the Points you used to determine that the function is not linear.

Clealy describe a recent corruption and fraud cases in the country making headlines in the media

A flame is ejected vertically upward from the groung at 15m/s.Find the height of the flame after 2.5seconds

pH of 1.0 x 10-8 M RbOH

Ammonia (NH3) reacts with oxygen to produce nitric oxide (NO) and water (see balanced equation below). How many grams of oxygen do you need to react with 21.4 g ammonia? __4_NH3 + __5_O2 → __4_NO + _6__H2O

There are 41 individuals in a grocery store, of which 18 are female. the total number of individuals who are 30 years old or older is 24 of which 10 are female. If an individual is randomly selected, what is the probability that they are either male or 30...

Thanks to Dr. Bob for answering all these questions! I always do poorly on conceptual problems. Consider the following equilibrium system at 25°C and select the true statement below: H2PO4−(aq) + SO42−(aq) ↔ HSO4−(aq) + HPO42−(aq) ΔG°rxn > 0 at 25°C (1) t...

Answers

The following answers were posted by visitors named Richard.

Also, does the relatively high specific heat of water play a part in this? Because it would take large amounts of energy to raise the temperature of the sweat, therefore keeping the sweat cool.

But why there were The Stamp Act?

On my homework it said name many plains and lakes etc.

5+5/10=5 1/2. If you were talking about fractions you to make into the simplest form after adding the equation.

You shouldn't be trying to get answers to the final here!

So mg=mrw^2? (and how do I find the w at the top of the loop?)

Wouldn't it be KEbottom = KEtop without the mgh term since there's no height at the bottom?

Actually, I think it should be: KE of bullet@bottom = KE of block&bullet@top + PE of block&bullet@top Is that right?

Your the teacher, he is the student. There said, your in charge and he isn't. Assuming, you don't to anything that violates your teacher to student relationship you be just fine. My advice is to ask if it should happen again to please move, if something s...

First Estimate, and then multiply to get the exact answer. 2*4/7*7*5/11*5

What amount of H2(g) is produced when 12g of magnesium reacts completely with dilute HCl(aq) Mg(s) + 2HCl(aq) ------> MgCl2(aq) + H2(g)

a=gsin(theta) a=9.8 sin 25° a= 0.43 Uf=Ui +at Uf= 0 + a(10) Uf=0 +4.3 Uf=4.3 m/s

Express versus Implied Contracts. Suppose that a local businessperson, McDougal, is a good friend of Krunch, the owner of a local candy store. Every day on his lunch hour McDougal goes into Krunch¡¦s candy store and spends about five minutes looking at th...

Thank you for the help.

Hi, the £ is pound sterling and p is pence, so can be swapped for $ and c/

The best answer is D - 6. The two negatives cancel each other out, making the sum 18 divided by 3, equaling 6.

Both were a cry for independence and freedom. Is that correct

(8.1 . 10^8) . (4.2 . 10^3)

It's all good to say that Brandon but the fact is you googled as well and came to this link. Hahahahaha

Oh reacts with Ca which decreases [Ca] and pushes reaction right CaC2O4<>Ca+C2O4

Do the equations x = 5y + 3 and x = 5y – 3 have the same solution? How might you explain your answer to someone who has not learned algebra?

the mean is based off of 3 months. multiply it out to get the mean for a correct time period (1.5x4=6). I use the Poisson function in excel. Mean is equal to 6 and x is equal to 12 and 0. True is up to a certain number (up to 12) and false is exactly a ce...

I got #1 C, #2 D and #3 $6.50?

Was #1 correct?

My first guess was A but then i read B this is confusing

please help asap

Roberto Wins- 1/4 Roberto Loses- 3/4

Your question is confusing. Please go further in detail.

Sorry, there was a typo. *51 degrees opposite the 150 cm side.

Time for asteroid = (RadiusEarthOrbit/RadiusAsteroidOrbit)^3/2 * Time for Earth Ta= (475/150)^3/2 *1 = 5.54 yr

According to the question:the hill rises at 37.7m to the vertical [y-axis] and 100m to the horizontal[x-axis] in the process a right-angle triangle is obtain and an angle of 90 is also obtain. 90 is the angle inclined at the horizontal

Thanks! I should have mentioned this in the question, but the answer sheet asks for two values of angle A rather than 1.

Oh nvm thanks Damon.

And steve sorry I didn't read the whole answer.

Let "m" be the number of modern rockers. INEQUALITY: 15c+12m<=3000, c>=0, m>=0

Sell it and get a proper PC.

Twice Brayton's age increased by 5 resuts in 49

How do you account for the 1/16 inch cuts?

Would you add the 1/16 inch to the 8 1/2 inch to account for each cut and then divide by the 32 FT 10 1/2 inch? or what? I'm confused on how to go about doing the problem.

Mass on moon = mg. = 70 kg × 0.17 =11.9 N.

Sorry I got 91.46 and 274.379. You were supposed to add 1/2 wavelength for the second value but why can't you add 1 whole wavelength especially since destructive interference is 1/2 wavelengths, 3/2 wavelengths, 5/2...etc.?

Answer is 18!!!!!

U cn b a social worker,psychologgy an lawyer but the requiriments for this,u mst have a bachelor degree

so whats the answer,

t will not change. It will continue in the same direction at the same speed.. Science Fusion Houghton Mifflin Harcourt.

Haha I love how you can just cheat in home school

B,C,D I got a 100

A D C I got a 100

A A C B Thank me later

yo bro I need the answers imw at behind and need to catch up

A copper Calorimeter of mass 150g,was half-filled with water of mass 300g and a temperature of 0°C.5g of ice of mass 0°C was added to the content, later some quantity of steam was passed into the mixture and the temperature rose by 20°C. Calculate the qua...

2t-5=7 2t=7+5 2t=12 t=12/2 t=6 I hope you loved the answer!

Please explain how and why bobpursley

Okkkk, lemne check it out!! Does this site have an application???

could not find the answer on google..... I'm tired, and I have to present this to my teacher in the next 6 hours.... ugh!!!!

Hi Damon, Where did you get the value 900 from?

Ah I see, that's part of completing the square.

7n+1/4 = 9 Is the same as 7n+1/4 = 9/1 Cross multiply 7n+1 = 36 Substract both sides by 1 7n+1-1 = 36-1 You end up with 7n = 35 divide both sides by 7 7n/7=35/7 You get n = 5

Use V=square root of FL/M. You can get your F from F=ma and L=e/k

1.F 2.T 3.T 4.T 5.T

Dr. Mathews is licensed in the state where she resides as a general practitioner and orthodontist. The local health clinic peer review staff will allow her to practice only orthodontia on only Mondays and Fridays. They already have two full-time general d...

The best representation of the "rags to riches" stories of the American Dream would be the dime store novels of Horatio Alger. That literally was his major theme throughout his work. The correct answer should be C. Twain's "Gilded Age" was more about econ...

If anyone actually cares about knowing why "common men" is correct I'll clue you in. Jackson was a proponent of slavery and considering all Native Americans mindless savages based on his frontier history and experience in multiple Indian wars. He also con...

r= 2Gm/c^2 rc^2=2Gm c^2=(2Gm)/r c=+or- sqrt[(2Gm)/r] c= sqrt[(2Gm)/r] (the speed of light is positive)

I do agree both of the students have solid points

But thats only assuming that both angles are are equal in measurement. You can't assume vertical angles are equal in measurement unless it is specified, which in this case, they are not.

Peace Love Faithfulness

I want to give my grandma a gift for her birthday. *

If you can't solve that just give up on life man.

Based on the course catalog, UC Berkeley offers 15 science majors, 9 arts majors, and 12 math majors. What is the probability that a new student randomly picks a major which is not a math major?

The answer is H3O+(aq) +OH(aq) ==>2H2O

what would the expression be? you just solve it and get what each variable equals to.