cooper

This page lists questions and answers that were posted by visitors named cooper.

Questions

The following questions were asked by visitors named cooper.

HNO3 (g) + 4H2 (g) „³ NH3 (g) + 3H2O (g)deltaH = -637 kJ Calculate the enthalpy change when one mole of hydrogen reacts and What is the enthalpy change when 10.00 g of ammonia is made to react with excess of steam to form nitric acid and hydrogen gases?

A 204.2 g sample of a mixture contains 22.3% sodium chloride. What mass (g) of sodium chloride is present in the sample

The number of protons, neutrons and electrons, respectively, in 115Cd2+ are?

You want to nail a 1.5 kg board onto the wall of a barn. To position the board before nailing, you push it against the wall with a horizontal force F to keep it from sliding to the ground. (a) If the coefficient of static friction between the board and th...

what changes would you half to make to a human being phisical features if it were to live in an enviroment with a temprature over 50c every day.

napoleon 1 was born in 1769 how old was he when he was crowned in france 1804 {equation]

3) A football is kicked at an angle of 60 degrees above the horizontal. To make the field goal it must reach a height of at least 3.048 m above the ground. What is the minimum speed the ball can be kick in order make a field goal?

Max is making trail mix. He combines 2/5 pound of dried fruit and 1/3 pound if mixed nuts. He adds sunflower seeds to make a total of 1 pound. What is the weight of the seeds?

'How do the media influence public perceptions about the law and its administration? How might public pressure impact legislators and judges in establishing the law?' would greatly appreciate a paragraph, A+ worth answer, struggling with this question.

why do they call the capital of Alaska called Juneau

An orchard grows both apples and pears. 1/4 of the fruit they grow is pears. What is the ratio of pears to apples?

Answers

The following answers were posted by visitors named cooper.

all of the are correct except for CoSO4 is cobalt sulfate (SO4 is a Polyatomic ion

no that's the whole question

This is what I got so far by using formaul for maximum height mu^2 sin^2 theta/2g = h and then mu^2(sin60)^2/2*9.81 = 3.048 so mu = 8.929m/s^2 please let me know if I am on correct path and what am I supppose to do next

This is how I did h = 1/2gt^2 t = sqrt2h/g = sqrt2*0.85/9.8 so t= 0.41628 total time = 2t = 0.832sec v^2 = v^2 +2gh v^2 = 0+2*9.81*0.1 v = 1.4 v= v+at 1.4 = v = 0+ 9.81 *t t = 0.142 secs total time 2t = 0.284sec so 0.284/0.832 = 0.391

does that makes sense to you ?

In the reaction between bromine and sodium, a bromine atom gains an electron and forms the bromide ion, Br–. What happens to bromine?

excellent answer Writeacher, appreciate it.

Translate this phrase into an algebraic expression.

Translate this phrase into an algebraic expression. imma kill

the answers on my test say 23.6, 24.6, 27.6 or 39.6 so idk what to put as my answer.

this is lteraly an answer to my homework

Anonymous Smart One is da bomb and gave me all the right answers!