Friday

November 27, 2015
Total # Posts: 655

**chemistry**

Propane (C3H8) which is used as fuel in BBQ tanks often contains some butane(C4H10). A sample of a fuel mixture known to contain both propane and butane occupies a certain volume at a total pressure of 30 mmHg. The sample is then burned completely to produce CO2 and H2O. The ...
*October 17, 2014*

**chemistry**

A co-op student designed an experiment to collect hydrogen gas by reacting iron with a hydrochloric acid (HCl) solution. The student’s co-op supervisor suggested that aluminum can also be included to generate hydrogen gas: Fe + 2 HCl → 2 FeCl2 + H2 2 Al + 6 HCl &#...
*October 17, 2014*

**physics**

Vx= Vsinϕ Vy= Vcosϕ
*September 30, 2014*

**Pre-Calc**

1.) Describe how the graphs of f(x) = |2x| and g(x) = -|2x| are related. a.) All of these. b.) The graph of g(x) is a reflection of the graph of f(x) over the y-axis. c.) Non of these. d.) The graph of g(x) is a reflection of the graph of f(x) over the x and y axes. e.) The ...
*September 26, 2014*

**chemistry**

Oops I left a part of the question out: 2. Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 215 ng of ...
*September 23, 2014*

**chemistry**

Mercury poisoning is a debilitating disease that is often fatal. In the human body, mercury reacts with essential enzymes, leading to irreversible inactivity of these enzymes. If the amount of mercury in a polluted lake is 215 ng of mercury / mL, what is the total mass in ...
*September 23, 2014*

**chemistry**

if you need 50.0 grams of lead2 chloride how much magnesium chloride would you need?
*July 9, 2014*

**physics**

Determine the final velocity of a medicine ball that is dropped from a height of 7.00 meters. (assume air resistance is negligible) I don't understand how to solve this with only change in x. I imagine I am supposed to assume initial velocity is 0 m/s, but, even if that is...
*June 5, 2014*

**english**

The italicized word is "extremely." Would that be intensive?
*May 16, 2014*

**geometry**

The james family just put in a pool. It is 5 feet deep and has an 8 foot radius. They only want to fill the pool 5/6 of the way. What will be the volume of the pool once filled? I'm so confused...please help.
*May 13, 2014*

**Science**

chromosomes split apart from both "parents" then that set from the mother attaches to the set that the father gives off. (the chromosomes carry DNA)
*April 18, 2014*

**Math**

do the equations y=2x+3 and x=1-2y have common solution, no common solution or infinitely many common solutions?
*March 4, 2014*

**5th grade math**

In the multiplication problem at the right different letters stand for different digits, and ABC and DBC each represent a three digit number. What number does DBC represent? Two answer possible; give one
*March 1, 2014*

**trig**

a sailor on a boat 580 metres from the base of a vertical cliff sights the top of a lighthouse with an angel of elevation of 31 degrees
*February 26, 2014*

**physics**

K(Ho)^2+(m)(Vo^2)=K(Hf)^2+m(Vo^2)
*December 5, 2013*

**Math Questions (AGAIN)**

I'm really confused with this!
*November 20, 2013*

**Math Questions (AGAIN)**

Hi! Someone was helping me earlier with these but their explanation was hard to understand. Can someone ELSE help me? Thanka! :) 1.) There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that it will rain on both ...
*November 20, 2013*

**Math**

Hi! I have 4 math questions! (: 1.) There is a 10% chance it will rain on Saturday and a 30% chance it will rain on Sunday. What percent chance is there that it will rain on both Saturday and Sunday? 2.)In a shipment of alarm clocks, the probability that one alarm clock is ...
*November 20, 2013*

**12**

If cot £ = -9/2 with £ in Quadrant II, find sin £
*September 17, 2013*

**Math**

A team has won 50% of the 60 games it played, find the number of games the team must win in succession to increase its winning percentage to 60%?
*May 15, 2013*

**Ms.Sue**

Thank you sooooooo much for your help.You're awesome!
*April 25, 2013*

**Ms.Sue**

The options are 3G-30 3G+30 30g+3 30g-3
*April 25, 2013*

**Ms.Sue**

It doesn't give me that as an option.I have another question. Write an situation that can be represented by 6n+4. Is this right? Brooke has n number of coins that are worth $6 each.If she also has 4 dollar bills in her purse,how much does she have in total?
*April 25, 2013*

**Ms.Sue**

I think it is 3G+30. I can't figure out the situation problem.I'm good at subtraction situations but I keep drawing a blank on the addition.
*April 25, 2013*

**Ms.Sue**

Can you please help me?I think the first question I posted the answer is 3G+30
*April 25, 2013*

**Math **

Write a situation that can be represented by 6n+4.
*April 25, 2013*

**Math**

Ben conserves water in his home.He conserves 3 gallons each time he turns off the faucet when brushing his teeth.He conserves 30 gallons by running the dishwasher once a day instead of twice a day. What expression represents the total number of gallons,g,Ben saves each day? 3g...
*April 25, 2013*

**Ms Sue**

Thank you so much!
*April 24, 2013*

**Ms Sue**

Thank you.I didn't know * was multiplication.So, would I explain she is not correct because?I don't know how to answer the why part.I knew they would be different I just don't understand why.
*April 24, 2013*

**Ms Sue**

I'm just making sure that you knew I meant the x was multiplication.I don't understand why the a is not represented with a number.I was thinking that I would have to find what a equals.Thank you for helping me.
*April 24, 2013*

**Ms Sue**

I don't understand.Can you please explain it to me?
*April 24, 2013*

**Math**

Greta says that the expression (2xa)+5 is the same as 2x(a+5). Is she correct?Why or why not?
*April 24, 2013*

**math**

The profit (in millions of dollars) from the sale of x million units of Blue Glue is given by p= .7x-25.5. The cost is given by c= .9x +25.5 (a) Find the revenue equation. (b) What is the revenue from selling 10 million units? (c)What is the break-even point?
*April 9, 2013*

**Math**

The profit (in millions of dollars) from the sale of x million units of Blue Glue is given by p= .7x-25.5. The cost is given by c= .9x +25.5 (a) Find the revenue equation. (b) What is the revenue from selling 10 million units? (c)What is the break-even point?
*April 9, 2013*

**Rbowh**

Thank you so much!
*April 9, 2013*

**Rbowh**

On the second problem r+11=19 r+11-_=19-_ r=_ Would it be R+11=30=19-11 R=8
*April 9, 2013*

**To rbowh**

I don't understand how w-8+8=26+8.wouldn't the first blank be 0?
*April 9, 2013*

**To rbowh**

Was 34 right?
*April 9, 2013*

**Math**

34?
*April 9, 2013*

**Math **

I am really confused.i don't understand.please help me figure this out W-8=26 W-8+_=26+_ W=_
*April 9, 2013*

**Math**

I am really confused
*April 9, 2013*

**Math**

R+11=19 r+11-_=19-_ r=_
*April 9, 2013*

**Math**

W-8=26 w-8+_=28+_. W=
*April 9, 2013*

**History pls help **

Which of the following nineteenth-century inventors is associated with Menlo park in New jersey A. Alexander Graham Bell B. Thomas Alva Edison C. Cyrus W. Field D. Gustavus F. Swift
*April 5, 2013*

**chemistry**

Would the following procedural errors result in an incorrectly high or low calculated percent NaOCl in commercial bleach solution? A student failed to allow the volumetric pipet to drain completely when transferring the diluted bleaching solution to the Erlenmeyer flask. I get...
*April 2, 2013*

**PLS HELP**

I think B is the answer if you are looking for an opinion because not everyone would agree that a pet should be owned by all people. "A" is a fact because every pet depends on it's owner for life because it has to be fed and watered; "C" is a fact ...
*April 1, 2013*

**chemistry**

Would the following procedural errors result in an incorrectly high or low calculated percent NaOCl in commercial bleach solution? A student failed to allow the volumetric pipet to drain completely when transferring the diluted bleaching solution to the Erlenmeyer flask. I get...
*April 1, 2013*

**chemistry**

How to calculate the molarity of commercial bleach
*April 1, 2013*

**science**

wordy numbers: 622-4463 (let it do the work)
*March 14, 2013*

**Health**

What is the Affordable Care Act? A. A program that allows people who are at lower risk for chronic diseases to gain free memberships to gyms and fitness facilities. B. A program that covers diet counseling for people who are at lower risk for chronic diseases like diabetes and...
*March 2, 2013*

**Maths **

If eight 5p coins weigh 26g how much does three 5p coins weigh?
*January 31, 2013*

**Accounting**

Holly County needs a new county government building that would cost $24 million. The politicians feel that voters will not approve a municipal bond issue to fund the building since it would increase taxes. They opt to have a state bank issue $24 million of tax-exempt ...
*January 31, 2013*

**Algebra**

2 over 5
*January 29, 2013*

**Chemistry**

Using Werner Hesienbergs uncertainty principle delta x >h/ (4pie*m*delta v) when mass of electron is 9.11x10^-31kg what is the uncertainty in the position of an electron moving at 9x10^6 m/s with an uncertainty of delta v= 0.01x10^6m/s
*January 14, 2013*

**math**

47 lbs=kgs give answer in decimal form
*December 23, 2012*

**Calculus**

Find the equation of the tangent line to the graph of 4y^2− xy − 3 = 0, at the point P=(1,1)
*December 9, 2012*

**Physical Science**

56000
*December 6, 2012*

**Chemistry**

Mr. DrBob222, would you mind explaining that a little more? I do not completely understand what is happening in the problem. Also, how do you know that Mg^2+ is half of OH^-?
*November 14, 2012*

**Math**

Jill made some cookies. Jill gave 1/4 of her cookies to Bob. Then Jill gave 1/2 of the remaining cookies to Joe. At this point, Jill had 18 cookies left. How many cookies did Jill have at first?
*November 7, 2012*

**science**

D=M/V D= 17/34 D= 1/2 or 0.5 g per cm
*October 23, 2012*

**math**

4(3)^2 = 4(9) = ?
*October 22, 2012*

**Math 8R - HELP! (homework qs. check)**

This is wrong. You were suppose to use the distributive property. Here, let me show you: -3(2+3x)+x-5 = -6+-9x+ x-5 Then, you combine like-terms: -6-5= -11 and then -9x+x= -8x Thus, your answer should be -11-8x. Hope I helped you a little bit.
*October 15, 2012*

**Language Arts**

No commas are needed around 1989.
*October 9, 2012*

**Science**

Strong.
*October 9, 2012*

**Math**

Assume that both Jane and Kathy start with 0 marbles. If Jane wins the first 15 games in a row, she will now have 15 marbles, and Kathy will have -15 marbles. This is because for ever game Jane wins, Kathy needs to hand over a marble. Jane cannot win anymore games. The goal ...
*October 3, 2012*

**math**

There are 6 people or hats in all. The key word in the problem is "in all".
*October 1, 2012*

**Earth science**

No. The sun is earth's source of energy.
*September 30, 2012*

**Algebra**

(9-4n)(-4)
*September 27, 2012*

**geometry**

loan officer
*September 25, 2012*

**Please help me!!!!!!!!**

this is due tonight
*September 25, 2012*

**Physics**

On some planet other than Earth a ball is thrown upward at a velocity of 22.3 m/s. It returns back to the exact position that it started at in 8.8s. What is this planets value for "g"? (
*September 25, 2012*

**Geography**

Formal are defined based on cold hard facts. Fuctional regions are organized around a focal point. Perceptional regions are reflected on human opinions.
*September 24, 2012*

**Physical education**

If you run almost everyday, then you will get use to it. I have P.E. since I was in kindergarten and now since I'm older I have to run a mile each Friday.
*September 24, 2012*

**Physics**

If a ball has an initial downward speed of 24 m/s, how far does the ball drop during the 4 s to 5 s interval?
*September 23, 2012*

**health**

Its D
*September 20, 2012*

**Math**

12 over 15 = Both can be divided by 3 so in simplest form, it would be 4 over 5 4 -- 5
*September 19, 2012*

**Math- INCOMPLETE**

What are the math problems?
*September 19, 2012*

**math**

Idiots. The answer was C [x = 1,600; y = 0], not B.
*September 17, 2012*

**Physics**

7. A cat pushes a ball from a 7.00 m high window, giving it a horizontal velocity of 0.20 m/s. How far from the base of the building does the ball land? (Assume no air resistance and that ay= g = 9.81 m/s2.)
*September 14, 2012*

**Math- INCOMPLETE**

What is the question?
*September 13, 2012*

**math**

advice to finding all the factors of 110
*September 11, 2012*

**Physics **

A record of travel along a straight path is as follows: 1. Start from rest with constant acceleration of 2.40 m/s2 for 14.0 s. 2. Maintain a constant velocity for the next 2.85 min. 3. Apply a constant negative acceleration of −8.39 m/s2 for 4.00 s. (a) What was the ...
*September 11, 2012*

**algebra**

Ops, Ms. Sue is right actually. I forgot to multiply 8 by 2
*September 8, 2012*

**algebra**

(x+8)2=32 2x+8=32 -8 -8 2x=24 divide each side by 2 x= ?
*September 8, 2012*

**Math**

Also, for the second one the rule is 8x+5. I think that is what Kerry J was referring to.
*September 7, 2012*

**Math**

You're welcome!
*September 7, 2012*

**Math**

For the first one, the rule is 4x-1. Plug the input into "x" and then check to see if you got the output right. Hope I helped!
*September 7, 2012*

**Math**

6 8/10 = 6 4/5
*September 6, 2012*

**Grammar**

No, and it should be "in new concepts."
*September 6, 2012*

**math**

let theta be an angle in quadrant three such that tan theta =6/5
*August 25, 2012*

**5th grade english**

is cactus already plural
*August 23, 2012*

**chemistry**

How much heat is needed to change 4.5g of water at 10degrees celcius into steam at 150 degrees celcius?
*August 21, 2012*

**Social Studies**

From the article I read on Wikipedia, I think it's C.
*August 15, 2012*

**Social Studies**

Maybe you could write something about the climate? Because kingdoms in the rain forest are more moist than the savanna kingdoms which are dry.
*August 14, 2012*

**Biology**

can you explain gametes and zygote of the kangaroo paw?
*August 12, 2012*

**language arts 2**

The only verb I see is "went".
*August 11, 2012*

**algebra**

I think this is how you solve it: 5x-14+28x =33x-14 Thus, 33x-14 is your simplified answer. Hope this helps!
*August 9, 2012*

**english**

I have not read the book before but from my view I think it's the first sentence.
*August 8, 2012*

**math**

Do you mean 'km' as in kilogram or kilometer? If you mean kilometer then it is not right because kilometer is measured in distances. Therefore, 1000 grams = 1 kilogram
*August 5, 2012*