Sunday

April 20, 2014

April 20, 2014

Total # Posts: 2,569

**Algebra**

there is no solution

**Algebra**

there is no equal sign.so to what is that equated to

**CHEM**

the equation is already balanced

**chemistry**

C H N MASS 39.97g 13.41g 46.62 #mol 3.33 13.41 3.33 ratio 1 4 1 empirical formular CH4N empirical mass 30 (CH4N)2=C2H8N2 THUS THE MOLECULAR FORMULA

**math**

20 cups

**Physics**

A block of mass 17.9 kg supported by a vertical massless cable is initially at rest. The block is then pulled upward with a constant acceleration of 2.01 m/s2. What is the tension in the cable? What is the magnitude of the net force acting on the mass? What is the speed of the...

**Math**

SIMPLY MULTIPLY THE 8 HOURS BY 7 DAYS WHICH GIVES 56

**Science**

What is the percent of fresh water and salt water?

**Easy Math **

I am confused on how to do this ? ! Jeff is a salesperson in a retail store and earns $52 per week plus 13% of his weekly sales. If Jeff made $312 one week, what were his sales that week?

**Chemistry**

CONCENTRATION OF NaClO IN COMMERCIAL BLEACH. Bleach comes as 6%(mass/volume) solution of NaClO. Calculate the Molarity of NaClO in bleach to three significant figures ( you need molar mass of NaClO)

**College Algebra**

Hello - I am stuck on this problem and I'm in serious need of some help. I don't understand this question at all. The problem is: Find the equilibrium quantity and equilibrium demand function for the given: Supply: P=45q Demand: P=q^2+10,000

**math**

Find the % of Discount Regular Price $25,000 Sale Price $22,000

**math**

Find the % of Discount Regular Price $90 Sale Price $22.50

**math**

1 ten

**math**

Find the % of Discount Regular Price $125 Sale Price $100

**math**

Find the % of Discount Regular Price $125 Sale Price $100

**math**

thanks Ms. Sue!!!

**math**

Find the % of Discount Regular Price $72 Sale Price $60

**Physics**

Maria throws an apple vertically upward from a height of 1.3m unit an initial velocity of velocity of 12.4m/s 1. will the apple reach a friend in a tree house 5.3m above the ground. 2. If the apple is not caught, how long will the apple be in the air before it hits the ground.

**Physics**

Stephanie hits a volleyball from a height of 0.80m and gives it on initial velocity of 17.5m/s straight up 1. How high will the volleyball go? 2.how long will it take the ball to reach its maximum height?

**math**

suppose that denise had doubled the number od trays of chocolate chip and oatmeal raisin cooies she bakes.How many trays of cookies would she have baked?

**PHY 171**

How does a derivation differ from an experiment or theory?

**Physical Science**

I studied this 2 years ago in college and am no back in school. I can't remember any of this stuff and I really need to figure it out. Please Help Me!! The Latent Heat of Vaporization for water is 540. cal/g. How much heat (in calories) must be added to 10.0 g of water at ...

**Math**

Please explain to me how I can do this .Sarah works in an appliance store. She gets a commission in addition to her hourly pay. She earns a 4% commission for sales up to $4000 and a 7% commission for all sales in a month above $4000. Last month her sales were $5300. How much w...

**Simple Math**

Two eight-sided number cubes are thrown. Given that one of the cubes shows a five, what is the probability that the sum of the numbers that come up on the two cubes is six?

**Simple Math**

A drawer contains 8 red socks, 4 white socks, and 2 blue socks. Without looking, you draw out a sock, return it, and draw out a second sock. What is the probability that the first sock is white and the second sock is blue?

**social studies**

i tried that and an article did not show up

**social studies**

Where could I find an article about gun control?

**math**

divide 775 by 3

**Math**

yes.

**Math**

divide 200 by 120 to get your answer

**Math**

divide 200 by 120 to get your answer

**Business English**

it is

**Algebra**

you take .80and mutiply by 99, then take that answer and subtract it from 99

**Algebra**

$80.19

**English 8R - help!**

I have.

**english communication**

it is right

**Math 8R - HELP!**

yeah.you are right.

**Math 8R - HELP!**

gtg

**Math 8R - HELP!**

that is not right what grade are you in bobpursley?

**Math 8R - HELP!**

2x0=0 5x=-3 what is x?

**Math 8R - HELP!**

you take 2 times 0 to get rid of the y, then you have 5x= negative three figure out x or else you are never going to learn. Is this due tomorrow?

**Math 8R - HELP!**

you have it right so far

**science**

Where can I find an article about the flu virus?

**math**

sorry i meant sphere

**math**

cylinder

**math**

What is the formula for volume?

**Social Studies**

no!!!! about gun control!!!

**Social Studies**

I didn't mean specific states, Einstein

**Social Studies**

I meant for the US, smart one!

**Social Studies**

Where can I find a National News Article?

**Logarithms (math)**

how do you solve for x 3.4e^(2-2n)-9=-4 I don't know what is the step by step process. Help please!

**Visual Basic**

if u didnt figure out...you have to reduce the fraction

**Visual Basic**

what does IntTemp and IntRem mean? and whats wrong with my code, i dont know whats wrong with it... Code below: Dim intNum As Integer 'the numderator is read as a whole number. Dim intDenom As Integer 'the denominator is read as a whole number. Dim inttemp As Integer D...

**Math 6th grade**

9/4

**Chemistry**

Theres an airplane with a mass of 5.4g, 305. mm long, moving at 1.8m/s. Is it classic or quantum?

**Chemistry**

i dont understand...

**Chemistry**

How many grams of AgNO3 (silver nitrate) are contained in 425 mL of a .15 M solution of AgNO3?

**Chemistry**

how would a dilution be performed, starting with a concentration .50 M Cacl2 solution, to obtain 250ml of a .060M solution?

**Chemistry**

how would a dilution be performed, starting with a concentration .50 M Cacl2 solution, to obtain 250ml of a .060M solution?

**chemistry**

describe how you would prepare 500 mL 0.250 M ethylene glycol (MW=62.07) from concentrated 31% (w/w) solution that has a density of 1.0350 g/mL

**chemistry**

describe how you would prepare 500 mL 0.250 M ethylene glycol (MW=62.07) from concentrated 31% (w/w) solution that has a density of 1.0350 g/mL

**PHYSICS (most is worked)**

A glass ball, ball A, of mass 6.0 g moves at a velocity of 18.0 cm/s. It collides with a second ball, ball B, of mass 8.0 g, moving along the same line of velocity of 11.0 cm/s. After the collision, ball A is still moving, but with a velocity of 10.0 cm/s. Ball A's origina...

**Chemistry**

Using chemical equations, show how the triprotic acid H3PO4 ionizes in water. Phases, such as (l) or (aq), are optional.

**Chemistry**

Write the equation for the reaction associated with the Ka2 of sulfuric acid, H2SO4. Write the equation for the reaction associated with the Kb2 of carbonate, CO32–.

**math**

thank you

**math**

i meant a

**math**

is it F.

**math**

Which of the following problems can be solved using the equation x-9=15? A. Allison is 9 years younger than her sister Pam. Allison is 15 years old. What is x, Pam's age? B. David's portion of the bill is $9 more than Jaleel's portion of the bill. If Jaleel pays $9...

**physics 2**

A charge, q1, of +4.4 micro-coulombs and another unknown charge, q2, are surrounded by a surface. The total flux through the surface is -9.2 x 106 (N m2)/C. These charges are now placed on the x axis. q1 is placed at x = 0, and q2 is placed at x = +114.51 cm. What is the magni...

**Mathh**

Thank you :)

**Mathh **

19-(3-x) = 5x. Can u show your work please? I know how to solve questions like these but couldnt figure it out with that x after the 5 '

**chemistry**

if a 3.72 gram sample of nitrogen occupies a 2.50 liter container at 1.08 atm, what is the temperature in Celcius?

**chemistry **

a racing tire has a pressure of 148 kPa at 19 degrees Celcius. What willthe pressure be at 42 degrees Celcius, assuming the volume remains the same?

**chemistry**

what is the mass of the precipitate formed when 45.0 milliliters of .250 M barium chloride solution reacts with 2.00 grams of copper(II) sulfae pentaydrate?

**chemistry **

What mass of solid magnesium hydroxide is needed to neutralixe .385 Liters of 2.5 M nitric acid?

**chemistry**

what volume of .025 M hydrochloric acid will neutralize 150 milliliters of .0133 M sodium hydroxide?

**chemistry**

what mass of water is expected when 5.80 grams of sodium carbonate reacts with excess sulfuric acid? what volume of gas is produced at STP?

**chemistry**

what mass of water is expected when 5.80 grams of sodium carbonate reacts with excess sulfuric acid? what volume of gas is produced at STP?

**Math **

What is a good reference to use when estimating the mass of a small object?

**Chemistry**

If u place a metal cube in beaker as a catalyst, what effect will it have on the reaction? And why?

**Pre algebra**

50 * 6 = 300ft

**Math**

An estimate of the mass of a new, unsharpened pencil is about __________. I think it's about 35 grams? Fill in the blanks. A good reference to use when estimating the mass of a small object is _____. It has a mass of about_________. Thank you!

**math**

Express Courier Service has found that the delivery time for packages is normally distributed with mean 14 hours and standard deviation 2 hours. What should be the guaranteed delivery time on all packages in order to be 95% sure that the package will be delivered before this t...

**Discrete Math**

ok that makes sense, thanks.

**Discrete Math**

Find z so that 5% of the area under the standard normal curve lies to the right of z. the answer according to the book is 1.645, anyone got any ideas on how to get this?

**Science**

How do you create a bar graph for science?

**physics 2**

Three charges are placed on the y axis. One charge of -3.2 micro-Coulombs is placed at y = 0, another charge of +2.6 micro-Coulombs is placed at y = -0.29 meters, and another unknown charge is placed at y = +0.51 meters. The total force on the charge at y = 0 due to the other ...

**physics 2**

Two identical positive charges are placed 15 cm apart and the magnitude of the electric force between them is 5.4 Newtons. They then exchange charge (one charge loses some electrons and the other gains the same amount of electrons), but they both still remain positive. After t...

**physics 2**

A charge of -6.8 micro-Coulombs is placed at x = 0, y = 0. A charge of -18.5 micro-Coulombs is placed at x = 0, y = +37 cm. Another charge of -12.9 micro-Coulombs is placed at x = +17 cm, y = 0 cm. What is the angle the total electric force on the charge at x = +17 cm, y = 0 c...

**algebra**

the ratio of two integers is 9:7 their sum is 1024 fint the two integers?

**AP Calculus**

Oil leaks out from a damaged oil tanker and forms a circle around the tanker. If the radius of the circle of oil is increasing at 25m/min, find the rate of change of the area when the radius is 20km

**History, social studies :) **

The mughal empire gave trading rights to several EUropean countries, what assumptions about the power of those countries does this show ??

**math**

Zaineb is deciding whether to buy a stereo at $695 plus GST and PST now, or to invest the money to buy the stereo in a year. Her account pays 7.35% per annum, compounded monthly. If she can buy the stereo at the same price next year, how much would she save by the investing mo...

**chemistry**

If 8 cm3 of 9.9 mol m-3 Fe(NO3)3 are mixed with 10 cm3 of 1.0 mol m-3 KSCN solution in a 20 cm3 volumetric flask and water is added to bring the total volume up to 20 cm3, what is the concentration of the Fe3+ ions (in mol m-3)?

**math**

For every 3 boys at soccer camp there are 2 girls. If there are 20 children at soccer camp.How many are girls?

**Social studies**

Plz help

**Social studies **

Why did the portuguese and other europeans want slaves??

**algebra 2**

what is the y-intercept, the x-coordinate of the vertex and the equation of the axis of symmetry of the problem f(x)=2x^2

**Chemistry**

Calculate the number of grams of solid Mg(OH)2 that will dissolve in 650 mL of water. For Mg(OH)2, Ksp = 1.5 x 10-11. Assume no volume change for the solution when the solid is added. A. 0.0093 B. 0.0059 C. 0.012 D. 0.019 E. 0.060 I got 0.0059, but I'm not sure if this is ...

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