jecce.

A diamond is a natural form of pure carbon. How many atoms of carbon are in a 1.00 carat diamond. (1.00 carat= 0.200 grams) Helppp pleasee!

im curious if i post my work on here will anyone check it for me to see if it is right?

Calculate the masses of Cr2O3, N2, H20 produced from 10.8 g (NH4)2Cr2O7 [ the 2 belongs to the nh4] in an ammonium dichromate volcano reaction. I need to know what the balance equation is, and im having a little trouble with it. Pleasee help!

The reusably booster rockets of the U.S space shuttle employ a mixture of aluminum and ammonium perchlorate for fuel. A possile equation for this reaction is 3Al+3NH4CLO4---> Al2O3+ AlCl+ 3NO+ 6H2O What mass of the NH4CLO4 should be used in the fuel mixtu...

If 10.0 g of hydrogen gar reacts with 20.0 g of oxygen gas, how much water will be made? So far this is all i have: (10.0g H2/1)(2molH2/2.02H2) = 9.0099 mol H2 (20.0g O2/1)(2mol O2/32g O2) = 1.25 mol O2 With the limited reactant being O2 Now what do i do?...

From the mass of CaCo3, caluculate the moles of CaCo3 percipitation. Given- Mass of CaCo3 is 1.838 The answer i got at the end if 18.45 If it"s wrong will you please explain to me what to do.

Thats CaCo3 is equal to 1.838 grams. **sorry!

can someone check these for me ? Lead(IV)nitrate-- Pb(No3)4 Aluminumoxide-- Al2O Ammoniumphosphate-- NH4(Po4) Perchloric Acid-- Clo4 Copper(II)bromide-- CuBr2 Thankss!

can someone balance this equation for me Fe^2+ Cr2 O7^2- --> Fe^3+ + Cr^3+ Thank you!:D

Can someone please help me ? What mass of glycerol must be dissolved in 200.0 g of water to give a solution with a freezing point of -1.50? im not sure how to even start this problem. I think i would find the moles in water first, then the grams in glycer...

What is the period in american history from 1901-1914 called?

ok well i had to find the molar mass of these substances. A) NH3 = 17.00 grams B) N2H4 = 32.00 grams C) (NH4)2 Cr2O7 = 776 grams For the second part i had to find how many moles of compounds are present in 1.00 grams of each substance i found above. A) i...

Sorry HUGE mistake i made.... this is what its suppose to be. B) i did 1.00g x (1 mole)/(32.00g) and got 3.1x10^-2

can you tell me how to add that? because what im doing is (NH4)2 Cr2)7 N= 14.00 H= 4x 1.00 = 4 so.. 18.00 x 2 = 36.00 and Cr= 2x 52 = 104 O= 7X 16 = 112 which equals to 216 and then i add 36 and get 776.

can you tell me how to add that? because what im doing is (NH4)2 Cr2O7 *****Sorry for my bad typing!

whoa. ha your right its 252! i must have put that wrong in the calculator! thanksss!

Ugh. Why is 2,3, and 4 wrong?

so im still confused. The answer would be then, Al3O2? and NH4(Po4)3

so what is it the progressive era? I thought it was that but it is too obvious, to me at least.