Sunday

August 2, 2015

August 2, 2015

Total # Posts: 44

**Chemistry**

Solid sodium peroxide (Na2O2) reacts with carbon dioxide gas to form solid sodium carbonate and oxygen gas. If I have 56.2 g of Na2O2 and I treat it with 2.4 L of carbon dioxide at 675 Torr and 23.6 „aC, how many grams of sodium carbonate will be produced?
*June 6, 2015*

**statistics**

B} The average number of mosquitoes in a stagnant pond is 70 per square meter with a standard deviation of 8. If 36 square meters are chosen at random for a mosquito count, find the probability that the average of those counts is more than 70.9 mosquitoes per square meter. ...
*November 12, 2014*

**math**

farmer brown just bought 100 animals. He spent $600 but can't remember how many of each animal he bought. Geese are $21, guinea pigs are $8 and chooks are $3. He remembers he bought an even number of geese. How many of each did he buy?
*June 12, 2014*

**Chemistry **

When 24g of Magnesium reacts with oxygen gas the only product is magnesium oxide. If 40g magnesuim is produced how much oxygen was consumed?
*March 22, 2014*

**Math**

Dan's business makes $75,000 a year. He spends 6% of that on advertising. How much does he spend on advertising?
*February 25, 2014*

**equation**

7 solve -1- - = 6 2x
*April 17, 2013*

**algebra**

how much water at 90 degree fahrenheit must be mixed with 30 gallons of water at 40 degrees fahrenheit so that the resulting temperature of all of the water would be 75 degree fahrenheit
*January 29, 2013*

**math**

Please explain to me. A green sea turtle weights 355.3 kilograms. Which decimal is equivalent to this number? A. 3,550.3 B. 350.30 C. 355.03 D. 350.003
*December 16, 2012*

**english**

what are some connotations of Hawaii?
*March 11, 2012*

**science/anatomy**

1. pharynx 2. nose 3 stratified squamous
*January 19, 2012*

**english**

In your Ántonia how does Jim's view of the two groups differ from the townspeople's view?
*January 3, 2012*

**vocab**

can someone check these answers for me please
*December 16, 2011*

**vocab**

4)foreshadowing 7)point of view 6)genre
*December 16, 2011*

**vocab**

1)a neutral term for the main character in a story 2)all the figurative language a writer use to describe things in a story 3)the mood or atmosphere of a story 4)a plot device that gives a hint of what will happen next 5)things that represent themselves and stand for something...
*December 16, 2011*

**statistics**

why don't you know the answer
*October 29, 2011*

**chem**

What effect would each of the following have on a sample'sobserved melting-point range ? b.rapid heating c.use of so much sample that the filled portion of the capillary tube extents considerably beyond the thermometer bulb d.poor circulation of the heating bath liquid.
*September 15, 2011*

**government**

WHat duties are given to the president in article II of the us constitution?
*September 12, 2011*

**Algebra 1**

Using substitution, solve this equation.. 3x - 5y = 11 x - 3y = 1
*September 11, 2011*

**algebra**

Which of the following functions has an inverse that is not a function? y=x y=2x+1 y=x to the second power
*May 25, 2011*

**algebra**

Let R = {0,1,2,3}be the range of h(x)= x-7. The domain of h is?
*May 25, 2011*

**algebra**

Find the roots of the equation. 4x to the second power plus 9=12x
*May 8, 2011*

**Algebra**

Regular pentagon ABCDE is inscribed in circle O. What is the number of degrees in the measure of angle OCE?
*May 6, 2011*

**Algebra**

The numbers a and b are consecutive positive integers, and a < square root 200 < b. What is the value of the product ab?
*May 6, 2011*

**Chemistry**

If 10.4 mols of hydrogen, H2, and 9.1 mols of oxygen, O2, are placed together in a container and allowed to react according to the following equation, which one, if any, is in excess and by how much? Also, how many moles of water, H2O, would be produced by the reaction?
*May 5, 2011*

**Chemistry**

Methyl alcohol (wood alcohol), CH3OH, is produced via the reaction CO(g) + 2 H2(g) à CH3OH(l) A mixture of 1.20 g H2(g) and 7.45 g CO(g) are allowed to react. 4 points (a) Which reagent is the limiting reagent? (b) What is the yield of CH3OH? [Assume theoretical yield ...
*May 5, 2011*

**Chemistry**

If 609.5 grams of vanadium (II) oxide, VO, and 832 grams of iron(III) oxide, Fe2O3, are put into a container and allowed to react according to the equation above, which substance(s) and how many grams of each would be present in the container after the reaction is complete?
*May 5, 2011*

**Algebra**

A coast guard helicopter receives a distress signal from a boat. the units (15,80) (55,38)represent miles. to the nearest minute, how long will it take the helicopter to reach the boat if the helicopter travels at an average speed of 75 miles per hour?
*November 16, 2010*

**Algebra**

a ladder is leaned against a building. the bottom of the ladder is 9 feet from the building the top of the ladder is 16 feet above the ground. draw a diagram to represent the situation. what is the slope of the ladder?
*November 11, 2010*

**Algebra**

Tara and Jade are hiking up a hill. Each has a different stride. The run for Tara's stride is 32 inches, and the rise is 8 inches. The run for Jade's stride is 36 inches. What is the rise of Jade's stride?
*November 11, 2010*

**Algebra**

One inch is equal to approximately 2.5 centimeters. Let x represent inches and y represent centimeters. Write an equation in standard form relating x and y. Give the values of A, B, and C.
*November 8, 2010*

**Science**

if a pressure of 10 psi on a volume of 5"^3 is reduced to 2 psi, by what factor does the pressure change?
*October 26, 2010*

**geometry**

actually it is 100 cm - 4 cm = 96cm the divide by 3 to get the anwser
*July 12, 2010*

**hfcc**

For the first phase of the project, imagine you want to cover the backyard with decorative rock and plant some trees. You need 30 tons of rock to cover the area. If each ton costs $60 and each tree is $84, what is the maximum number of trees you can buy with a budget of $2,500...
*July 11, 2010*

**Mat 116**

what is the domain of p? p(x)=x²-2+7 I do not know how to do this problem. Please help!
*April 11, 2010*

**Mat 116 Final**

Is it true when the problem says solve x= then it is one number, or fraction. The test does say below where it is looking for an answer will say type integer, or fraction. Then I get myself confused when it says 7x = -56 I figured this is dividing -56 by 7 this would be x= -8 ...
*April 11, 2010*

**Mat 116 Final**

x+3y=6 I did it like x + 3y = 6 ____________ x*(-1) +3*(2) ?6 -1 6 -6 Also, (-1,2) intercepts (3,6) Am I correct. If so. then solution for x = -1
*April 11, 2010*

**Mat 116 Final**

if linear graph shows 1 marked on y and the second mark is directly on -2x then the answer is m= -1/2
*April 11, 2010*

**math**

Dan receives $375 per week for selling new and used cars at a car dealership in Oak Lawn, Illinois. In addition, he receives 5% of the profit on any sales that he generates. Write an equation that relates Dan's weekly salary S when he has sales that generate a profit of x ...
*February 18, 2010*

**English **

Something To Were All The Kids Can Play And Have Fun, I Think We Should Have A Place For Everything. As In Sports, Art, Reading, Things LIke That.
*October 26, 2009*

**Algebra**

Factor x^2 - 3xy - 18y^2 I am not too sure if this is right, but any help is appreciated! Thanks! (x – 6y) (x + 3y) is this correct?
*March 29, 2009*

**biology**

Compare and contrast the Central Nervous System and the Peripheral Nervous System. Thank you
*March 6, 2008*

**Substitution Method**

21y=-21 21y/21=-21/21 y=-1
*October 26, 2007*

**Geography**

I have this project to do but I didn't briing my book home. This is the problem. . . _______, _______, _________, and ________make up Caribbean South America. I would be greatly gratified if you would help me! i looked it up and saw coloumbia and venezuela but there is ...
*November 28, 2006*

**Watershed?**

wtf people. yeah everyone is in flvs, but why is everyone on here so mean? do you honestly think that HALF the people on that site actually do their work? haha. NO!!! all you gotta do is copy and paste the question in google. so instead of !@#$%^&ing everyone out about proper...
*November 1, 2006*

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