To change the state of a system from lower to higher potential energy , one must therefore supply energy to the system . why ?

To change the state of a system from lower to higher potential energy , one must therefore supply energy to the system . why ?

How many grams of Fe3+ are present in 3.49 grams of iron(iii) cyanide?

How many grams of iron(iii) cyanide in 3.26 grams of Fe3+?

How many grams of Cu+ are present in 4.40 grams of copper(i) acetate?

How many grams of copper(i) acetate contain 4.55 grams of Cu+?

Aspirin, C9H8O4 (180.2 g/mol) is prepared by the following reaction: C7H6O3 + C4H6O3 → C9H8O4 + C2H2O2 If you need to prepare 45 g of aspirin,...

If you started with 5.64 grams of H2SiCl2, how many grams of HCl will be produced?

I need these answers so I can pass the class you got me?

Its a question dealing with combines gas laws

Which has a pressure of 740. mmHg, at a temperature of 25 degree Celsius, in a volume of 250. mL? I tried figuring this out myself by putting (740)(o.25)/ (0.0821)(298) but I am not getting...

The formula is Mg3N2 + 6H2O---> 3Mg(OH)2 + 2NH3. I tried solving this equation and got 130 grams, then found out it was actually 93 grams but I can't figure out what I must have done wrong...

The formula is Mg3N2 + 6H2O---> 3Mg(OH)2 + 2NH3

I cannot figure it out, although i think that it has something to do with a double replacement reaction.

Need help on this question.

My guess is Na, because if I am correct the radius increases going down group.

I am stuck on this question can someone help me please.

Molar mass of KHP is 204.22 KHP has one acidic hydrogen

A. acidic B. basic C. neutral My guess was acidic because of the H3O, but I wasn't sure because of the -8. I know that it is basic if the number is greater than 7 so I got stuck...

Aluminum sulfate, but my question is is why? At first, I thought the answer was Aluminum (III) Sulfate because of the 3 behind the parenthesis but apparently that isn't correct. Can you explain to...

These are the two half reactions: Oxaloacetate+2H++2e-=malate (-0.166) =E0(V) Fumarate+2H++2e-=succinate (+0.031)=E0(V) 1. Which of the oxidizing agents is...