Thursday

April 24, 2014

April 24, 2014

Total # Posts: 229

**chemistry**

What is the percent yield of NaCl if 31.0 g of CuCl2 reacts with excess NaNO3 to produce 21.2 g of NaCl?

**Algebra**

Gustav’s father is seven times as old as he is. A year ago, he was nine times as old as Gustav. Find Gustav’s present age.

**7th grade English**

Is it themselves

**7th grade English**

Ok one more I need to ask you. The Great Lakes (they, themselves) are Babe's drinking water.

**7th grade English **

Use the correct pronoun in parentheses. The book ( it, itself) is a collector's item. Please help. Thanks.

**science(please check answers)**

@queenelsa #12 is b and #13 is d and yes they are all correct I finished and I got 'em all right!

**physics**

If my kinetic coefficient and static coefficient are both 1.02, how can I explain why they are the same???? (For a horizontal surface)

**Physics**

If the gravitational force between objects of equal mass is 2.30x10^-8 N when the objects are 10.0m apart, what is the mass of each object?

**chemistry**

Actually I solved it - and just to clarify what Dr. bob was doing: dHrxn = (n*dH SO3) - (n*dH SO2) where n is equal to 2 based on the stoichiometric equation 2SO2 + O2 ==> 2SO3 Indeed, Find dHf SO3 and dHf SO2 in tables in your text or notes. Then, the number of moles of SO...

**Chem**

Dr. Bob, I don't think this is the answer. It's close, but I think there is another step. Could you elaborate on your answer to make it more clear?

**Physics **

A ball rolling down a hill was displaced at 19.6m while uniformly accelerating from rest. If the final velocity was 5.00 m/s what was the rate of acceptation?

**Physics **

A projectile is fired off a 35m cliff at 18m/s. what horizontal distance does the projectile travel before hitting the ground?

**Physics **

a rubber ball is thrown downwards off a balcony. after it travels 55m it has a speed of 46.5m/s. what is the initial velocity

**chemistry lab**

obtaining a smaller amount of sio2 than was present in the original sample

**chemistry lab**

list the possible manipulation errors that might contribute in obtaining a significantly larger amount of nacl than was present in original sample

**Math**

I really don't know the answer?

**Science - physics**

Ms. Sue I hear you are good with these problems could you be of assistance for this one? Thank you!

**Science - physics**

Imagine you need to deliver a piano over three steps. A longer ramp translates into less force necessary to raise the piano's height than a shorter ramp would require. Calculate the percentage smaller a force would be required using an 2.8m long ramp compared to a 0.9m ramp?

**American Goverment**

Despite their differences, the Founding Fathers all agreed that _____. democracy was the most important political value the Constitution should balance order, liberty, and popular sovereignty freedom must be protected at all costs a monarchy should be established to ensure orde

**American Goverment**

Philadelphia, Pennsylvania was NOT _____. the location the 1787 Constitutional Convention. the city where the Declaration of Independence was signed the childhood home of Thomas Jefferson and John Adams an important city in colonial America 22. For the first eleven years of it...

**chemistry**

The H3o+ concentration of a solution is found to e 3.40*10^-6. What is the pH of the solution? what is the H3O+ concentration? what is the OH- concentration? is this and acidor a base?

**chemistry**

If 37.0 mL of HCl is used to neutralize 25.0 mL of 0.09345M LiOH. What is the concentration of the acid

**chemistry**

If 37.0 mL of HCl is used to neutralize 25.0 mL of 0.09345M LiOH. What is the concentration of the acid

**chemistry**

If 7.50 mL of 0.100M HCl is mixed with 12.5mL of NaOH. What is the concentration of the base

**Science**

300 mm Hg

**Physical sciences**

What is the universal law?

**poetry**

What is the authors tone in the poem arithmetic?

**math**

the product of 16 and c is increased by 6 to equal the qoutient 25 and 9. what is c?

**physics**

A collision occurs between two pucks on an air-hockey table. Puck A has a mass of 0.020 kg and is moving along the x axis with a velocity of +5.5 m/s. It makes a collision with puck B, which has a mass of 0.040 kg and is initially at rest. The collision is not head-on. After t...

**Physics**

A 4.90-kg ball, moving to the right at a velocity of +2.50 m/s on a frictionless table, collides head-on with a stationary 8.00-kg ball. Find the final velocities of the balls if the collision meet the following conditions. (a) elastic 4.9-kg ball = 8-kg ball = (b) completely ...

**Algebra 1**

thank you!!

**Algebra 1**

ignore the w= l + 6= < 36!!

**Algebra 1**

Okay one last one that I've spent all night truing to figue out. 2. The width of a rectangle is 6 cm longer than its length. Its perimeter is more than 36 cm. Let l equal the length of the rectangle. a. for the width in terms of the length. W= l + 6= <36 b. Write an ine...

**Algebra 1**

So as I was doing me hw, I ran into this question, and I cant figure it out... Anyone wanna try? 7. The ratio of the perimeters of two triangles is 2:5. The perimeter of the larger triangle is 20 cm. What is the perimeter of the smaller triangle?

**Algebra 1**

Okay. So I am completely lost with this... Any help would be great! 3. Solve the system using any method – graphing, substitution, or linear combination. Make sure to show your work. 2x + 5y= 8 x + 3y= 2

**Calculus**

the area of the first quadrant region bounded by the y-axis, the line y=4-x and the graph of y=x-cosx is approximately: a) 4.50 square units, b) 4.54 square units, c) 4.56 square units, d) 4.58 square units, e) 5.00 square units

**calculus**

A ball is thrown vertically upwards from a height of 6 ft with an initial velocity of 60 ft per second. How high will the ball go? Note that the acceleration of the ball is given by a(t)= 32 feet per second per second.

**geometry**

What is the endpoint of a segment with endpoints -33 and 47?

**physics**

You drive a car for 2.0 h at 35 km/h, then for another 2.0 h at 64 km/h. (a) What is your average velocity? (b) What is your answer if instead you drive 99 km at each of the two speeds?

**physics**

An engineer must design a runway to accommodate airplanes that must reach a ground velocity of 60 m/s before they can take off. These planes are capable of being accelerated uniformly at the rate of 2.1 m/s2. (a) How long will it take the planes to reach takeoff speed? s (b) W...

**physics**

Engineers are developing new types of guns that might someday be used to launch satellites as if they were bullets. One such gun can give a small object a velocity of 2.9 km/s, moving it through only 1.6 cm. (a) What acceleration does the gun give this object? (b) Over what ti...

**physics**

A supersonic jet flying at 137 m/s is accelerated uniformly at the rate of 23.1 m/s2 for 20.0 s. (a) What is its final velocity? (b) The speed of sound in air is 331 m/s. How many times the speed of sound is the plane's final speed?

**physics**

You drive a car for 2.0 h at 35 km/h, then for another 2.0 h at 64 km/h. (a) What is your average velocity? (b) What is your answer if instead you drive 99 km at each of the two speeds?

**physics**

A car is moving down a street at 51 km/h. A child suddenly runs into the street. If it takes the driver 0.62 s to react and apply the brakes, how many meters will the car have moved before it begins to slow down?

**physics**

A car with a velocity of 19 m/s is accelerated uniformly at the rate of 1.8 m/s2 for 6.8 s. What is its final velocity?

**physics**

A car with a velocity of 19 m/s is accelerated uniformly at the rate of 1.8 m/s2 for 6.8 s. What is its final velocity?

**4th grade math**

im stipus

**government**

Ms Sue those are all my choices i have read and read but cant find my answer but i think B C D might be the answer are one of them the answerws

**Chemistry**

The mass of a single uranium atom is 4.70E-22 grams. How many uranium atoms would there be in 167 milligrams of uranium?

**Physics**

11486N. Find velocity 24/0.14= 171.4m/s^2 Then F=MA 171.4*67=11485.71

**Math**

Mr. Frank is shopping for carpet for his living room and dining room. The living room is 20 feet by 16 feet and the dining room is 11 feet by 10 feet. He looked at two differently priced carpets. One for $14.99 a square yard installed and another for $19.99 a square yard insta...

**Math**

Thank you

**Math**

Conrad taxi service charges $1.50 for the first mile and $0.90 for each additional mile. How far can Mr. Kulp go for $20 if he gives the driver a $2 tip. Write a let statement; represent the additional miles in terms of the total travelled. Write an equation... Is ithe answer ...

**grade six math**

7,555,333

**American Government**

True or False? About 75 % of those eligible to vote did so in the 2000 presidential election?

**Math**

Last week Frank worked as a waiter for 6&1/4 hrs, earning $9.80 per hour. He also earned $14.50 per hour delivering packages for 7&1/2 hours. How much money did he earn last week?

**Math**

Casey paid $45 for one new tire and one used tyre for his bicycle. The new tire costs $17 more than the used tire. How much did the new tire cost? I have worked out the answer in my head, ($31) but is there a particular formula I can use or follow.

**childcare**

I guess no1 wants 2 answer me Thanks anyways

**childcare**

Can any1 let me know if my answers are correct

**childcare**

My Answers are-- 1.d 2.d 3.c 4.b 5.a

**childcare**

1. A child who moved from throwing a ball using only an elbow movement to throwing a ball using her elbow, wrist, and shoulder is showing signs of ______development. a.intertask b.spatial c.joint-plate d.intratask 2. According to Leeds, at snack time, children should be given ...

**Living a Healthy Life**

I mean d.

**Living a Healthy Life**

My answer was c

**Living a Healthy Life**

Some child psychologists have concluded that _________ is the strongest predictor of both scholastic and career achievement. a.physical illness b.respect for authority c.emotional well being d.inherted intelligence

**child care**

Some child psychologists have concluded that _________ is the strongest predictor of both scholastic and career achievement. a.physical illness b.respect for authority c.emotional well being d.inherted intelligence My answer-d

**Living a Healthy Life**

Thank you for you help

**Living a Healthy Life**

children should not be served drinks in containers made of... a. styrofoam b. uninsultated paper c. treated ceramic d. stainless steal My Answer is... b.

**Living a Healthy Life**

It doesnt make sense for it to be any, a. b. or d

**Living a Healthy Life**

Im confussed

**Living a Healthy Life**

In my book it says Biological Hazards are Arachnids,Spiders make up the majority of these

**Living a Healthy Life**

Is it Biological?

**Living a Healthy Life**

1.When playing outside, children should wear protective clothing and play in shaded areas to a.avoid radiation from sunlight b.avoid being stung or biteen by insects c.prevent attacks of scabies d.stay cool and maintain psychological My Answer - C 2. What type of hazard is a s...

**Living a Healthy Life**

2.Temperatures in child care education setting should be set at __ in the summer and __ in the winter. 1. 55 to 65, 65 to 85 2. 60 to 63, 70 to 73 3. 68 to 72, 65 to 75 4. 72 to 80, 70 to 80 My answer is... 2. 60 to 63,70 to 73 Pls let me know if this is correct Thank you

**Algebra **

The bus stations in Trawlwy and Fenton are 220 miles apart. A bus left Trawley for Fenton at 9:00am. Traveling at 40 miles per hour. One hour later, an express bus left Fenton for Trawley traveling along the same road at 50 miles per hour. At what time did the buses pass each...

**Math**

The bus stations in Trawlwy and Fenton are 220 miles apart. A bus left Trawley for Fenton at 9:00am. Traveling at 40 miles per hour. One hour later, an express bus left Fenton for Trawley traveling along the same road at 50 miles per hour. At what time did the buses pass each...

**Algebra**

The bus stations in Trawlwy and Fenton are 220 miles apart. A bus left Trawley for Fenton at 9:00am. Traveling at 40 miles per hour. One hour later, an express bus left Fenton for Trawley traveling along the same road at 50 miles per hour. At what time did the buses pass each ...

**Algebra**

Thanks. Typing is correct .. Question is flawed. Will let teacher know. Appreciate your help!

**Algebra**

Using that equation it comes up to $5.70 not $5.80..?

**Algebra**

In Vanessa's coin bank there are 4 times as many quarters as nickels, 2 fewer dimes than nickels, and 15 pennies. The total amount in the bank is $5.80. How many of each coin are in the bank? A. Assign a variable to the unknown quantity. B. Write an equation you can use to...

**algebra**

For what value (s) of P could the expression 100 divided by P squared minus 16 NOT be evaluated? Explain how you arrived at your answer?

**calculus**

5.6

**english IV**

no. Although her personality had not changed at all, are italicized. whats the structure?

**Chemistry**

THANK YOU!!

**Chemistry **

1. Tube # 3: (a) It started out as purple, and turned into green. (b) No precipitate was noticably formed. Tube #4: (a) This tube was purple, and turned into white. (b) A brown precipitate was formed after adding 1 mL of NaHSO3. Tube #5: (a) This tube was also purple, but then...

**math 7th grade**

What does it mean to ring four integers that yield a sum. The sum is 2.

**hospitality **

why and when you whip eggs?

**US History**

Flow chart. One Box then two boxes then 6 boxes. The words are: Freedom of Religion Freedom of Speech Involvement in Government Obey The Law Respect the Rights of Others responsibilities right to vote rights. Don't know how to put the flow chart together. It falls under go...

**poetry**

THE GAME OF SOCCER Stadium overcrowded by hooligans and fans Cheering, waving flags, and clapping their hands Players on the field, they’re ready to start There goes the whistle; it pumps up their hearts Adding strength to the ball, and kicking it high The ball travels ov...

**8th Grade Math**

630000000 4.7 X 10^-7

**math**

If I have 4 sides of a square and I take out 3 1/2 what do i have left? it has to be a whole

**social studies, civics**

THANK YOU SO MUCH!

**social studies, civics**

Thank you! do you have any advice on how to organize it? i want it to be a good speech.. but i am so lost!

**social studies, civics**

so i have to write a paper pretending to be a republican candidate, and trying to get my class members to vote for me. I really have no idea how to do this /: any ideas?

**History**

thanks everyone!

**History**

what did conscientious objectors do during world war one

**Chem (last question, I promise)**

You measure one edge of a cube using a meter stick marked in centimeters. Unfortunately, the edge is longer than 1 m. You mark the 1-m point on the cube edge with a pen and then, using a 15-cm ruler marked in millimeters, measure the remaining distance to be 1.40cm. (a) What i...

**Chemistry**

Ooooh, thats easy enough. Thanks a million =]

**Chemistry**

How do you do this? A block of metal measuring 3.0 cm X 4.0 cm X 5.0 cm has a mass of 470.0g. What is the density of the metal in grams per cubic centimeter?

**Chem (conversions)**

How do you convert? (a) 72 F to C and K (b) -12 C to F and K (c) 178 K to and C

**Chem**

How do you convert? (a) 4.50 Cal to calories (b) 600.0 Cal to kilojoules (c) 1.000 J to calories (d) 50.0 Cal to joules