# cc

Popular questions and responses by cc-
## chemistry

The molarity of urea in a solution prepared by dissolving 16 g of urea (MW 60.0g/mol) in 39 g of H2O is ______M. The density of the solution is 1.3 g/ml.

*asked on March 9, 2010* -
## chemistry

A solution is prepared by dissolving 15.0 g of NH3 in 250.g of water. The density of the resulting solution is 0.974 g/ml. The mole fraction of NH3 in the solution is?

*asked on March 5, 2010* -
## Business Statistics

John & Jane are married. The probability that John watches a certain television show is .4. The probability that Jane watches the show is .5. The probability that John watches the show, given that Jane does, is .7. 1) find probability that both John & Jane

*asked on June 21, 2011* -
## random

what kind of website is this? what is jiskha? Jiskha is the name given to the site by the man who runs the show here. His name is Leo. This is a help site with the emphasis on help. We try to help students do their homework. But we like to see what the

*asked on January 18, 2007* -
## Physics

The driver in a car of total mass 800kg and which is travelling at 20m / s suddenly observes a stationary dog in his path 50m ahead . if the car brakes can exert a force of 2000N, what will likely happen

*asked on June 21, 2017* -
## Algebra 2

A theater has 43 seats in the first row, 47 seats in the second, and 51 seats in the third row. How many seats are there in row 17

*asked on November 26, 2012* -
## english

4. Which of the following sentences contains “passive voice?” (Points : 1) The airplane was wrecked by the wind. The wind wrecked the airplane. The cat chased the mouse. The bird flew after the balloon. a, b, c

*asked on October 24, 2010* -
## Math

Find the measure of the supplement of 58 degrees

*asked on June 7, 2011* -
## chemistry

A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution

*asked on February 9, 2010* -
## math

Given the equation of a closed curve is x^2-2x+4y^2+16y+1=0.Find the coordinates of the two points where the lines tangent to the curve are vertical.

*asked on December 11, 2015* -
## preventing injury

why is it important to get a medical check up prior to beginning a fitness program?

*asked on December 6, 2014* -
## statistics

In which data set is there evidence of a strong nonlinear relationship between the two variables?

*asked on April 20, 2012* -
## Math

11. Determine whether or not the relation is a function. {(-3, 6), (-2, 7), (-1, 8), (0, 9)} No Yes

*asked on June 7, 2011* -
## Chem

Which direction will the following reaction in a 5.0 L flask proceed if Qp = 0.013? 2H2O(g) = 2H2(g) + O2(g) Kp = 1.6 x 10-5 Choose one answer. a. to the right because Q > Kp b. to the left because Q > Kp c. to the right because Q < Kp d. to the left

*asked on March 24, 2010* -
## Chemistry

Calculate the molality of methanol in a solution prepared by dissolving 75.0 mL of methanol, CH3OH (d = 0.791 g/mL), in 150 g of ethanol, C2H5OH.

*asked on February 10, 2010* -
## Chemistry

A 2.30 m solution of urea (CO(NH2)2; FW= 60.0) in water has a density of 1.14 g/mL. Calculate the percent mass of urea in this solution?

*asked on February 9, 2010* -
## Math

Tony broke a larger array into 2 x 9 array and a 4 x 9 array. What did the larger array look like? Draw picture. Write a number sentence to show the relationship between the large array and the two smaller arrays.

*asked on November 29, 2016* -
## Math

State the theorem or postulate that is related to the measures of the angles in each pair. Then find the angle measures. m∠3=(23x+11)°,m∠4=(14x+21)° Can you teach me this problem?? Please...

*asked on August 30, 2016* -
## Math

A plumb bob is a weight hung at the end of a string, called a plumb line. The weight pulls the string down so that the plumb line is perfectly vertical. Suppose that the angle formed by the wall and the roof is 123° and the angle formed by the plumb line

*asked on August 30, 2016* -
## biology

Aquatic organisms: A. have a waxy coating to prevent water loss B. may experience problems with water balance C. typically have a plentiful supply of nitrogen. D. never find light to be in short supply

*asked on October 9, 2014* -
## science

Where can I find information on Energy reformation for a middle school student to understand?

*asked on February 1, 2014* -
## chemistry

Three solutions are mixed together to form a single solution. One contains 0.2 mol \rm mol Pb(CH 3 COO) 2 \rm Pb(CH_3COO)_2, the second contains 0.1 mol \rm mol Na 2 S \rm Na_2S, and the third contains 0.1 mol \rm mol CaCl 2 \rm CaCl_2. Write the

*asked on October 19, 2013* -
## Chemistry

A Gaseous mixture contains 4.08g of oxygen and 2.78g of Nitrogen a)What pressure is exerted by the mixture inside a 100.0ml metal container at 150C. b) what pressure is contributed by the oxygen? (please show steps)

*asked on April 20, 2012* -
## math

. A box contains five blue, eight green, and three yellow marbles. If a marble is selected at random, what is the probability that it is not blue?

*asked on June 9, 2011* -
## math

Phil had an unpaid balance of $1,854.50 on his credit card statement at the beginning of December. He made a payment of $45.00 during the month. If the interest rate on Phil's credit card was 2.5% per month on the unpaid balance, find the finance charge

*asked on June 9, 2011* -
## Math

Find the coordinates of the x intercept 2x + y = -6

*asked on June 7, 2011* -
## geometry

Given Isosceles trapezoid ABCD. AB = 3x - 4 and CD = x + 12. Find AB. Isosceles trapezoid A B C D is drawn. 2 8 16 20

*asked on December 15, 2010* -
## physics

Before a collision, a 28 kg object is moving at +13 m/s. Find the impulse

*asked on December 11, 2010* -
## Chem

A mixture is prepared with [CO] = 0.035, [Cl2] = 0.015, and [COCl2] = 0.95. It is known that Kc for the equilibrium is 1.2 x 10-3 at 400OC. Predict what will happen. Choose one answer. a. The reaction is at equilibrium so no net reaction occurs. b. The

*asked on March 22, 2010* -
## Chem

At a particular temperature, Kc = 54 for the reaction H2(g) + I2 (g) 2 HI(g). One mole of HI is placed in a 3.0-L container. What would be the equilibrium concentration of HI?

*asked on March 22, 2010* -
## Chem

At a particular temperature, Kc = 54 for the reaction If 1.0 mole of H2 and 1.0 mole of I2 are placed in a 5.0 L container, what would be the equilibrium concentration of HI?

*asked on March 22, 2010* -
## math

if given ..,. y=4x^-4 if x triples what happens to y?

*asked on February 22, 2010* -
## Chemistry

A 6.00 M H2SO4 solution has d = 1.34 g/mL. What is the mass percent of H2SO4 in this solution? Choose one answer. a. 56.1 b. 43.9 c. 37.0 d. 58.8 When we calculated yesterday the answer was not B. 43.9....I got it wrong and don't know why if the math was

*asked on February 10, 2010* -
## chemistry

A 6.00 M H2SO4 solution has d = 1.34 g/mL. What is the mass percent of H2SO4 in this solution?

*asked on February 9, 2010* -
## economics

the calculation of GDP would include?

*asked on January 11, 2010* -
## Careers

Hello i am doing a matching paperwork and need help. Can you let me know if they are right or which ones wrong? Role of a nurse i have works closely with all health members to provide optimal care to patients. For doctor i have in charge of overall medical

*asked on March 22, 2020* -
## Math

I need help. Name a pair of vertical angle.

*asked on February 7, 2019* -
## Math

Sue has 8. Piece of sting each measure 6,5. How many inches of sting left

*asked on November 27, 2018* -
## math

ms sue will you help me if my coordinates are A o,4 B 4,4 C 2,0 D 0,0 THE DILATION IS A' 0,2 B' 2,2 C' 2,0 D' 0,0 what is the scale factor?

*asked on November 7, 2018* -
## History

How do i answer this question using the race method? you will discuss the ways in which the United States fought the Cold War economically, socially, and politically and which methods you believe were the most effective in combating communism.

*asked on February 28, 2018* -
## Math

Carolina runs 3 1/2 miles in 22 1/4 Minutes. how many miles does she run per minute A.) 3/22 mike per minute B.) 62/221 mile per minute C.) 14/89 mike per minute D.) 4/39 mike per minute

*asked on November 14, 2017* -
## chemistry

According to the following chemical equation: N2 + 3H2 → 2NH3 How many grams of hydrogen are needed to completely react with 28.0 grams of nitrogen?

*asked on July 12, 2017* -
## Math

So, I have a question on a project that asks why you get a different answer when measuring the side of a hypotenuse versus using the Pythagorean Theorem. I did get different answers, but I just can't figure out why.

*asked on November 17, 2016* -
## English Writing

Why you think it is important that she control her temper? How will learning this help in the future? If you, how do you answer this question??

*asked on October 10, 2016* -
## Physical Education

I'm looking for Practice Methods for P.E. class. What is the best way to improve endurance and Muscular strength? I need some webpage （reference) Please help me------

*asked on October 7, 2016* -
## Social Studies Religion

A Muslim organization wants to build a small mosque in the vicinity of the September 11 Memorial in New York City. There is public outrage from many citizens who do not want a Muslim religious site there. You must write a letter to the mayor of NYC

*asked on October 4, 2016* -
## Science, Nature Science

Can you please give me three examples of things that photosynthesize that live in oceans?

*asked on October 3, 2016* -
## Science, Nature Science

Can you give me three examples of things that photosynthesize that live in oceans?

*asked on October 2, 2016* -
## Science,

Why don’t bodies of water freeze in the winter, even when ice or snow forms?

*asked on October 2, 2016* -
## Science, Nature Science,ence, Nature Science,ence

How does water help us stay cool?

*asked on October 2, 2016* -
## Science, Nature Science,

Give 3 examples of nutrients that WE NEED in our bodies that are soluble in water. Give 3 examples of gases that are soluble in water. Could you please help me these questions?

*asked on October 1, 2016* -
## Social Studies Religion

A Muslim organization wants to build a small mosque in the vicinity of the September 11 Memorial in New York City. There is public outrage from many citizens who do not want a Muslim religious site there. You must write a letter to the mayor of NYC

*asked on September 29, 2016* -
## Science , Earth , Waterce , Earth , Waterce

How can I answer this question? Draw an overall conclusion: how does water compare to other substances? Why do you think so? Please help me...

*asked on September 28, 2016* -
## College Math

One manufacturer needs to calculate the net price of an order with a list price of $800 and a trade discount series of 12/9/4. Use the net decimal equivalent to find the net price.

*asked on September 18, 2016* -
## Math Solving problem

In an egg and spoon race, children must transport eggs from one end of a course to the other. Points are awarded for each successfully transported, and points are deducted for each egg which drops and breaks. Jenny transported 5 eggs and dropped 2 eggs for

*asked on September 11, 2016* -
## Science

how does the initial procedure compare to your updated procedure? What changes did you have to make? Why? How can I answer this question? Please help me... ;(

*asked on September 10, 2016* -
## English Writing

People believe in God because... And there is life on earth because... And people who believe in God think that God has put human beings on this earth because... Could you help me? I'm not English speaker so I don't know how can I write continue of these

*asked on September 5, 2016* -
## Math Algebra

How can I solve this problem? A circle has diameter [AB]. The centre of the circle is (1,3), and B has coordinates (4,-1). # Find the coordinates of A. # Find the length of the diameter. HELP ME PLEASE

*asked on September 4, 2016* -
## Science Earth

Guard cells are closed during the night. This means that no gases can come in or out of the stomata. Why would the plant not need to take in gas during the night? How can I answer in this question?

*asked on September 4, 2016* -
## English Writing

Please help me... People believe in God because... And there is life on earth because... And people who believe in God think that God has put human beings on this earth because... I have to write continue of these sentences... Could you guys help me

*asked on September 4, 2016* -
## Art , Painting

This is my homework today.. I have to write it but I don't know how to write this.. so could you guys help me? Identify and analyze how the art element, Color, is present in the final outcome.

*asked on August 30, 2016* -
## Science

Imagine you designed an experiment that investigated the effect of feeding yeast cells different concentrations (0, 5, 10, 15, 25%) of sugar solutions. The yeast used the sugar to do cellular respiration and make CO2 as a waste product. The volume of CO2

*asked on August 28, 2016* -
## economics

How do you think the Demand and Supply patterns have changed in the United states since 2008 when the recession started?

*asked on June 12, 2016* -
## Calc

A spherical snowball is melting in such a way that its diameter is decreasing at rate of 0.3 cm/min. At what rate is the volume of the snowball decreasing when the diameter is 13 cm. (Note the answer is a positive number).

*asked on November 20, 2015* -
## Algebra

Does an inequality of the form ax > b always, sometimes, or never give a solution of the form x > c? Give examples to support your answer.

*asked on September 5, 2015* -
## Algebra

(6x−7) (3x-5) (5x+78) ------ + ------- = ------- 4 7 28 How do you solve for the answer? Explain each step.

*asked on September 3, 2015* -
## Algebra

The revenue in dollars from a school play is given by the expression 5x+2y, where x is the of adult tickets sold and y is the number of student tickets sold. If the revenue is $220, find the x- and y- intercepts and explain what they represent in the

*asked on September 3, 2015* -
## math

At a zoo, 1/3 of the animals are birds, 4/9 are mammals, and the rest are reptiles and amphibians. What fraction of animals at the zoo are reptiles and amphibians?

*asked on June 17, 2015* -
## math algebra 1

The length of a rectangle is 2 m less than the diagonal and the width is 8 m less than the diagonal. If the area is 82 m2, how long is the diagonal?

*asked on May 26, 2015* -
## Math

5.3x+2-4.1x=3.6x-1.6 My answer x=1.5

*asked on January 20, 2015* -
## Math

12m+12=6(3m+3) My answer is -6= -6 which is identity ??? Or is it null or empty??

*asked on January 19, 2015* -
## Math

Fiona earns $15 for each lawn she mows. What is the inequality to find out how many lawns she must mow to earn at least $135. My answer 15m

*asked on January 14, 2015* -
## Math

8x+5=4x-7 I put x=-3

*asked on January 14, 2015* -
## science/physics

If a pendulum is not pushed, why does it not go as big when it swings back. Where does the lost PE go? ans. Since there is no force applied to the pendulum there is not enough Kinetic energy (energy of motion) to transform into potential energy to make it

*asked on February 9, 2014* -
## physics/science

If a pendulum is not pushed, why does it not go as big when it swings back. Where does the lost PE go? ans. Since there is no force applied to the pendulum there is not enough Kinetic energy (energy of motion) to transform into potential energy to make it

*asked on February 9, 2014* -
## math

In asheville north carolina in August the temperature is an even number less than 40 that has the same number of tens and ones Answer: Could it be 22 4 tens and 0 ones = 4 2 tens and 2 ones = 4

*asked on January 29, 2014* -
## math

In Asheville North Carolina in August the temperature is an even number less than 40 that has the same number of tens and ones Ans: 34

*asked on January 29, 2014* -
## vocabulary

Has the ability of human beings to produce new inventions (quenched, outstripped) our ability to use them wisely Ans... outstripped

*asked on January 23, 2014* -
## vocabulary

As we returned to the dressing room after that terrible first half, the whole atmosphere seemed to be (pervaded, capsized) by defeat. Ans. capsized?? With eager students and able teachers, learning will (flourish, outstrip), even though the school building

*asked on January 23, 2014* -
## criminal law

a bail bondsman fee is usually what percentage of the set bail

*asked on January 12, 2014* -
## lang arts

List common nouns Anne Morrow Lindbergh soon shared his love of aviation. Answer: love & aviation question: Is shared a common noun also?

*asked on January 6, 2014* -
## math

How do I find the 3rd side of a triangle if I am given 2 sides and there is no mention if it is a right triangle?

*asked on January 5, 2014* -
## math

it is 10 degrees outside and the temperature is due to drop 16 degrees. what will be the temperature the

*asked on December 10, 2013* -
## Physics Part 2

Rick's next shot isn't as good. She hits the cue ball with a velocity of 5.6 m/s and it hits the 4 ball. The cue ball bounces off at a 45 degree angle off it's original path at a speed of 3.5 m/s. What is the velocity of the 4 ball? ---So all i know is the

*asked on November 10, 2013* -
## Physics Part 1

Rick is playing billiards and hits the cue ball. It makes contact with the 8 ball head on. If before the collision the cue ball was travelling at 2.4 m/s and after the collision the 8 ball was traveling at 2.13 m/s. How fast and in what direction is the

*asked on November 9, 2013* -
## math

Alicia Eastman deposited $2,000 in a savings account at the Biltmore Bank paying 6% ordinary interest. How many years will it take for her investment to amount to $2,600?

*asked on June 16, 2013* -
## 5th grade math

how do i convert milligrams to grams- i am in fifth grade-easiest way please.

*asked on March 28, 2013* -
## Algebra 2

The height h(t), in feet, of an airborne tee-shirt t seconds after begin launch can be approximated by h(t)= -15t^2+120t+10,0

*asked on October 18, 2012* -
## MAT 116

A moon is about 210,000 miles from the planet it orbits. Write in scientific notation. If a rocket traveled at 3 x 10^4 miles per hour, how long would it take for it to reach the moon from the planet? Write the number 210,000 in scientific notation. 210,00

*asked on September 25, 2012* -
## MAT

The recommanded weight range for a person who is 64 inches tall

*asked on September 20, 2012* -
## beginning algebra

how to work out 0.00855 ÷ 0.09

*asked on September 1, 2012* -
## finance

Firm A has $10,000 in assets entirely financed with equity. Firm B also has $10,000 in assets, but these assets are financed by $5,000 in debt (with a 15 percent rate of interest) and $5,000 in equity. Both firms sell 10,000 units of output at $2.50 per

*asked on August 10, 2012* -
## Finance

What is the projects initial outlay? Should the project be accepted why or why not? New Caledonia Problem 35% tax bracket 12% discount rate Cost of new plant $9,000,000.00 Shipping and $350,000.00 Sales: Year Sales 1 125,000 units 2 140,000 units 3 190,000

*asked on August 4, 2012* -
## ChemistryI

If an ideal gas occupies 736 ml at 45C and 719 torr, what volume will it occupyat 105Cand 972torr?

*asked on April 20, 2012* -
## statistic

Provide the Null and Alternative Hypothesis to test the hypothesis that sales is meeting their minimum quota for the month.

*asked on April 7, 2012* -
## statistics

Provide the Null and Alternative Hypothesis to test to be sure that a juice manufacturer is delivering exactly 12 fluid ounces, on average, for each 12 oz juice box.

*asked on April 7, 2012* -
## Algebra 102

9^x=1/3^3 Please Help

*asked on December 5, 2011* -
## pre-algebra

Marissa has budgeted $65 for her monthly cell phone expense. If her plan with her wireless provider is $15 plus $0.25 for each minute, how many minutes can she talk on her cell phone in a month and not exceed her budget?

*asked on October 30, 2011* -
## math

RAMON PLANTED 3 ROWS OF SEEDS. EACH ROW HAD 8 SEEDS. THE SEEDS WERE 42 INCHES LONG. HOW FAR APART SHOULD HE PLANT THE SEEDS?

*asked on October 18, 2011* -
## geometry

If R is the midpoint of AB and S is the midpoint of BC and AS:SC=3:2, determine the length of BS if AC=50.

*asked on September 18, 2011*