Wednesday
July 23, 2014

Posts by quentin


Total # Posts: 22

Chemistry
What mass of KOH is required to neutralize 200mL of 3.16 M HNO3?

Math
4 3/4 + v = 17 1/8 What is v

Math
4 3/4+v=17 1/8 What is v

Math
What is the value of y. Y-4/5=11/20

english
what is the complete and simple subject for "Valentine's day has a very interesting History."

math
The length of a train 15 cars long if 1 car is 18 m long

Probability
I need help calculating a c value such that f(x,y) is a probability density function. What makes a function a probability density function?

Biology
In what situations would sampling work best for estimating population size, in what situations would mark and recapture work best and why?

Finance
Year Cash Flow 1 $695,000 2 876,250 3 1,057,500 4 1,238,750 5 1,420,000 1. Calculate the IRR and NPV of this project utilizing a 12% discount rate and a 15% cap rate. Ms. Brown was able to secure a loan for $1,540,000, and an equity investor agreed to invest the remaining $660...

REDWOOD ELEM
1 OVER T MINUS 2 EQUALS T OVER 8 PLEASE HELP ME SOLVE

chemistry
what is the density of O2 gas at STP

chemistry
calculate the number of moles there are when a gas occupies a volume of 3.95L at 37 degrees C and .985 atm

chemistry
if 429 grams of gas occupies 25.6L at 49 degrees C at a pressure of 759 mmHg what volume will 4.29g of gas will occupy at 53 degrees C (assume pressure is unchanged)

chemistry
Calculate the pressure in atm of a balloon filled with 7.50g of helium gas if the balloon's volume decreases to 7.50L. Suppose the balloon's pressure and volume are originally 799 mmHg and 15.0L.

chemistry
calculate the pressure in atm of a balloon filled with 7.5g of helium gas if the baloons volume decreases to 7.5L suppose the balloons pressure and volume are originally 799 mmHg and 15L

chemistry
convert 353 torr to atm

chemistry
calculate the percent composition or w/v% of 3x10 to the 2nd power mL solution containing 15g of glucose

chemistry
calculate the amount of heat necessary ti raise the temperature of 8.5kg of water from 12.5 to 84 degrees C

chemistry
the specific heat of aluminum is 0.214 cal/g degrees C. calculate the heat necessary to raise the temperature of 55.5g of aluminum from 23 to 48.6 degrees C

chem ap
please tell me if i am correct a buffer is made using HF and NaF-with a pH of 3.00. compute the ratio of the conjugate base F- to weak acid HF. I previously found Ka of HF which is 7.2x10^-4 and the ph of HF is 3.15. the concentration of NaF would be 1.00x10^-2 ???? and so the...

chem AP
does CrCl3 form an acidic solution in water?

math pre-algebra
N to the power of negative 5 N to the power of negative 5 is aready in its simplest form. Unless you know the value of N, this problem can't be solved any further.

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