Sunday

October 23, 2016
Total # Posts: 51

**chemistry**

What is the composition of a methanol () – propanol () solution that has a vapor pressure of 121 torr at 40°C? At 40°C, the vapor pressures of pure methanol and pure propanol are 303 and 44.6 torr, respectively. Assume the solution is ideal. Mole fraction of ...

*October 5, 2016*

**chemistry**

Pentane (C5H12) and hexane (C6H14) form an ideal solution. At 25oC the vapor pressures of pentane and hexane are 511 and 150 torr, respectively. A solution is prepared by mixing 25 mL pentane (density, 0.63 g/mL) with 45 mL hexane (density, 0.66 g/mL). What is the vapor ...

*October 5, 2016*

**Need help 6th grade math**

A large pizza has 8 slices determine whether 6 large pizzas will be enough for 24 people if each person eats 2 to 3 slices of pizza Plz I need help By savanna

*September 13, 2016*

**6th grade plz help**

A watch costs d dollars how would u write the price of a radio that costs $15 more than the watch plz help thx

*September 7, 2016*

**Algebra**

This is what I have w,18,12 I have to write an expression for each table plz I need help thx 😃

*September 7, 2016*

**AP Environmental Science**

Why is it necessary to eliminate absolutely all invasive fire ant colonies to eradicate the invasive population? A)Every colony has a major impact on native flora and fauna. B)Because the last colony found is the one housing the invasion’s queen. C)Even a single remaining...

*September 22, 2015*

**Geometry**

During the half-time show of a football game, a trumpet player and a tuba player start at the same position on the field. The trumpet player then marches 76.4 ft directly toward the goal line, and the tuba player marches directly toward the sideline. At the end of their march...

*May 4, 2015*

**AP Chemistry**

Thanks! The site actually asks for 5 s.f., and it's saying that I am wrong no matter what I am typing in... I will just have to ask my teacher about it tomorrow! Thanks again!

*January 5, 2015*

**AP Chemistry**

Calculate the moles of CO2 formed when 4.2 mol of C3H8 react with 20.6 mol O2. Answer in units of mol. So, the balanced equation is C3H8 + 5 O2 ==> 3 CO2 + 4 H2O . I thought the answer would be 12.36 mol, but when I type it in it's wrong. Please help!

*January 5, 2015*

**AP Chemistry**

Thank you!

*December 1, 2014*

**AP Chemistry**

For the reaction ?CH4+ ?O2 ==> ?CO2+ ?H2O, what is the maximum amount of CO2 (44.0095 g/mol) which could be formed from 3.67 g of CH4 (16.0425 g/mol) and 4.23 g of O2 (31.9988 g/mol)? Answer in units of g I know that you have to balance the equation, so the coefficients 1, ...

*December 1, 2014*

**Finite Math**

The price of a new car is $24,000. Assume that an individual makes a down payment of 25% toward the purchase of the car and secures financing for the balance at the rate of 10%/year compounded monthly. (Round your answers to the nearest cent.) (a) What monthly payment will she...

*May 19, 2014*

**geometry**

a boy stands 1 meter away from a lamppost. he is 1.8 meters tall and casts a shadow 2 meters long in the light from the lamp. how tall is the lamppost?

*June 25, 2013*

**Math**

On Monday, it snowed a total of 15 inches. On Tuesday and Wednesday, it snowed in additional 4 1/2 inches and 6 3/4 inches respectively. A weather forecaster says that over the last three days, it snowed over 2 1/2 Feet. Is this a valid claim? Justify you answer.

*November 15, 2012*

**math**

Which section do I use?

*September 25, 2012*

**math**

Write as a whole number or mixed number in simplest for 21/4

*September 25, 2012*

**math**

The link you gave me there's a lot of sections. On the website

*September 25, 2012*

**math**

Which section do I use?

*September 25, 2012*

**math**

Huh?

*September 25, 2012*

**math**

Write as a whole number or mixed number in simplest form 1 1/3

*September 25, 2012*

**Math**

Determine if two ratios are equivalent Complete using < > = 2:4 [ ] 7:36

*September 19, 2012*

**math**

How is this equal?

*September 19, 2012*

**math**

I got 3/5 ? Ohhh so its >

*September 19, 2012*

**math**

Determine if two ratios are equivalent Complete using < > = 3/5 [ ] 18 out of 30 can someone help me learn this?

*September 19, 2012*

**Math (Need help FAST!)**

Oh its = nevermind(: ty

*September 19, 2012*

**Math (Need help FAST!)**

Wait so is it 5/20 > 4/10 Or 4/10 < 5/20 ?

*September 19, 2012*

**Math (Need help FAST!)**

Determine if two ratios are equivalent Complete using < > = 5/20 [ ] 4/10 How did YOU do it?

*September 19, 2012*

**social studies**

Philippines, ' Indonesia New Zealand, Japan.

*September 19, 2012*

**Easy math**

So far I have my gcf but confused what's next.

*September 19, 2012*

**Easy math**

Write each ratio as a fraction in simple form. 12 kittens to 15 puppies

*September 19, 2012*

**Math**

Write each ratio as a fraction in simple form. 12 kittens to 15 puppies. Sorry about that.

*September 19, 2012*

**Math**

Write each ratio as a fraction in simple form.

*September 19, 2012*

**Math**

Awesome! Came exactly what you said when I showed the work.

*September 19, 2012*

**Math**

Thank you. What steps do I do for future problems?

*September 19, 2012*

**Math**

Write each ratio as a fraction in simplistic form. a class has 6 boys and 15 girls what is the ratio of boys to girls? Help? Tell me what you did. Thanks(:

*September 19, 2012*

**math**

ms. gries is an athlete. she is skis every day for 5 days. she skis for 1 1/2 hours for her first day and increases her time by 1 1/4 hours for her next four days. how many hours will she ski on the fifth day? show you work

*February 26, 2012*

**Math**

the answer will be 15/20

*February 26, 2012*

**Ap World History**

What were two main ways that ideas and technologies were transmitted between civilizations?

*August 10, 2011*

**Math**

A bag holds 40 erasers that are each the same size and shape.Eight of the erasers are red. You reach into the bag and select one eraser at random, what is the probability it is not red?

*April 19, 2011*

**biology **

In two to three well-developed paragraphs, explain how the graph below helps support the concern that burning fossil fuels has changed the atmosphere. Describe, in your own words, the change shown in the graph and how this change is occurring in the atmosphere. i cant post a ...

*March 25, 2011*

**english**

the characters nat hocken from the story "the birds by,Daphne du Maurier" and general zaroff from "the most dangerous game by, Richard Connell" must overcome internal foes as well as external monsters list and explain each character's internal conflicts.

*March 17, 2011*

**Wolrd History AP**

How can u compare the 10 abominations during the Tang Dynasty to Hammurabi's code?

*November 2, 2010*

**5th grade**

come on i hate division!!!!!!!!!

*October 5, 2010*

**math**

Laurie expects to make $100,000 in 2007. Her social security tax rate is 6.20% up to the wage base, Medicare is 1.45%. How much FICA is Laurie expected to pay for the year?

*November 9, 2009*

**Ap World History**

What were two main ways that ideas and technologies were transmitted between civilizations?

*December 7, 2008*

**algerbra 1**

i don't understand how to do these 1+3x-x=x-4+2z 3+3x-(x-2)=3x+4

*November 5, 2008*

**algerbra 1**

i don't understand how to do these 1+3x-x=x-4+2z 3+3x-(x-2)=3x+4

*November 5, 2008*

**8th grade**

how do you solve a proportion if one of the ratios contains a variable?? <3

*October 21, 2008*

**History**

A political scientist aruges that we have made all the constitutional changes necessary to expand sufferage. What do we need to do now is to foster the civic norm that increse citizen participation. Do you agree of disagree with that argument and WHY???

*October 12, 2007*

**Economics**

What options do we have to decrease the nations debt.

*October 9, 2007*

**Economics**

Considering monetary policy, federal and state tax cuts, and our war on terrorism, what options does our government have available to them to balance the federal budget.

*October 9, 2007*

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