1. How many grams of sodium chloride are required to react with 196 grams of H2SO4?
2. How many grams of hydrogen are produced by the action of hydrochloric acid on 50 grams of zinc?
3. How many grams of copper oxide may be reduced by 10 grams of hydrogen?
Can you hlep me to understand how to do this?
point me in the direction of getting some help?
or show me how to figure out the answer.
2007-01-12 03:48:13 · 4 answers · asked by Amber Elizabeth 1 in Science & Mathematics ➔ Chemistry
You should do your own homework girlie.......
2007-01-12 03:56:20 · answer #1 · answered by EFruler 2 · 0⤊ 0⤋
1. 2NaOH + H2SO4 = Na2SO4 + 2H2O
(196/98)x2x40
2. Zn + 2HCl = ZnCl2 + H2
(50/65)x2
3. CuO + H2 = Cu + H2O
(10/2)x80
2007-01-12 11:55:39 · answer #2 · answered by Norman Arthrun 1 · 0⤊ 0⤋
1. Too advanced for me.
2. Zn is element number 30 (in the Periodic Table). A mole of Zn atoms has a mass of 65.38 grams. 2moles have a mass of 130.76 grams. Half a mole has a mass of 32.69 grams.
50 grams is 50/65.38 moles of Zn atoms. That is 0.765 moles
Zn + H2SO4 -> ZnSO4 + H2
So, 1 mole of Zn atoms produces 2 moles of H atoms.
1 mole of H atoms has a mass of 1 g, and 2 moles of H atoms has a mass of 2g.
Again, 1mole of Zn + 1mole of H2SO4 give 1 mole of ZnSO4 and 1 mole of H2 molecules = 2 moles of H atoms.
The 0.765 moles of Zn give 2X0.765 grams of Hydrogen.
Time up.
2007-01-12 11:58:54 · answer #3 · answered by Sciman 6 · 0⤊ 0⤋
1.92g
2007-01-12 11:54:58 · answer #4 · answered by jonadab j 1 · 0⤊ 0⤋