Monday
April 21, 2014

Posts by Laney


Total # Posts: 41

Math
You are about to leave for vacation, but you forgot your socks! You go back to your room but lights are out, can't see. You remember that in your draw you have 10 pair black, 10 pair white and 11 pair blue all mixed up. How many socks do you need to take out to be SURE you...

Math
no I think that is wrong because the answer is -32/5 I just need the work.

Math
what is -6.4 as a fraction?

Physics
A plane drops a hamper of medical supplies from a height of 2960m during a practice run over the ocean. The planes horizontal velocity was 108m/s at the instant the hamper was dropped. What is the magnitude of the overall velocity at the hamper at the instant it strikes the su...

chem class
The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 mL of 0.125 M HCl is __________. i know the answer is 7.00, but im not sure how to solve it, do i create an ice chart?

chemistry
The pH of a solution prepared by mixing 50.0 mL of 0.125 M KOH and 50.0 mL of 0.125 M HCl is __________. i know the answer is 7.00, but im not sure how to solve it, do i create an ice chart?

6th grade
The direction sliding between tire and road.

chem 1406
ok thats where i got the number 8260000kj=kj uuuggggh i dont know what im doing wrong!!

chem 1406
ok thats where i got the number 8260000kj=kj uuuggggh i dont know what im doing wrong!!

chem 1406
ok so (2000moles/1)(4130kj/1mole) = (kj/2000 moles)(2000 moles/1) (2000)(4130kj) = kj now what?

chem 1406
ok so then i set it up wrong it should be 4130 kj/1 mole = 2000 moles/kj and that time i got 8260000 i dont know if that is right because the kj would cancel out too

chem 1406
i got 2.065 kJ/mole

chem 1406
so i would set the problem up like this.... 4130kJ/1 mole = xkJ/2000 moles ???

chem 1406
Consider: C7 H16(L) + 11 O2 (G) yields 7 CO2 + 8 H2O (L) delta Hreaction = -4130 kJ How much energy is released when 2,000 moles of C7 H16 is combusted?

another college chem
its all good

another college chem
Calculate the boiling point of a 4.35 m benzene solution in phenol. (phenol bp=181.75 degree C and Kb=304 degree C/m)

College chemistry
ok, we didnt do joules in class, so hopefully thats what my teacher wants. thank you!

College chemistry
i got 5020.8

College chemistry
i got 5020.8

College chemistry
ok so it'd be (2.00*10^2)(6.00 degree C) and then what would be the specific heat?

College chemistry
do i use the 5.00 g or the 2.00 * 10^2 g?

College chemistry
5.00 g of octane are burned in a bomb calorimeter containing 2.00 * 10^2 g of water. how many Calories of energy are released if the water temperature increases 6.00 degrees C?

College chemistry
ok thank you!! i posted a new question! i have a test tomorrow morning and im doing a practice exam and a few questions stumped me!!

College chemistry
i got a huge number, is 191.20 correct?

College chemistry
How do you calculate the number of mL you would use to prepare 5.0 L of 0.20 M NaOH from a 5.23 M stock solution.

chemistry
Calculate the number of mL you would use to prepare 5.0 L of 0.20 M NaOH from a 5.23 M stock solution.

geometry
describe how you would find the total area of the lateral faces of a cube?

MATH
LAMONT IS REQ TO READ 1 BIO, 1 SCIENCE, AND 1 POETRY BOOK EACH MONTH. HIS BOOK CHOICES ARE: 2 DIFF BIOS 3 DIFF SCIENCE 3 DIFF POETRY HOW MANY COMBINATIONS OF REQ BOOKS ARE POSSIBLE?

math
I have the upse question and want to know what the upse stands for. I think the u means understand, p means plan and s means solve and e means evaluate, but I am not sure. I would also like an example of this.

math
Can anyone tell me the parts to an upse which is used to solve a word problem? Could you also give me an example of how it works. Thanks

math
how do i solve the problem what is the radius of a circle with a circumference of 24 pie

math
how do i solve the following: 6 X 10 to the power of one + 5 X 10 to the power of zero + 4 X 10 to the negative power of one?

math
how do I add decimals for example 3.2 + 1.8

math
how do i write a fraction for 87 1/2 percent

math
I don't understand how to do it can you show me.

math
how do i solve 8 is to 15 as 24 is to __________

math
how can you tell which is smaller 0.33 or 1/3

math
What is the largest prime number less than 50 and how do you know?

Math
LIV Arabic number?

history
Thanks!

history
What does class-system and class-state mean? I can't find the meanings in the dictionary.

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