Answer:
<u>2</u>AgI + <u>1</u>Na₂S ⟶ <u>1</u>Ag₂S +<u>2</u>NaI
Explanation:
silver(I) iodide + sodium sulfide ⟶ silver(I) sulfide + sodium iodide
1. Convert the word equation to a chemical equation:
AgI + Na₂S ⟶ Ag₂S + NaI
2. Put a 1 in front of the most complicated-looking formula (Na₂S?):
AgI + <u>1</u>Na₂S ⟶ Ag₂S + NaI
3. Balance Na:
We have fixed 2 Na on the left. We need 2 Na on the right. Put a 2 in front of NaI.
AgI + <u>1</u>Na₂S ⟶ Ag₂S +<u>2</u>NaI
4. Balance S:
We have fixed 1 S on the left. We need 1 O on the right. Put a 1 in front of Ag₂S.
AgI + 1Na₂S ⟶ 1Ag₂S +2NaI
5. Balance Ag:
We have fixed 2Ag on the right. We need 2 Ag on the left. Put a 2 in front of AgI.
<u>2</u>AgI + <u>1</u>Na₂S ⟶ <u>1</u>Ag₂S +<u>2</u>NaI
Every formula now has a coefficient. The equation should be balanced.
6. Check that atoms balance:
<u>Atom</u> <u>On the left</u> <u>On the right
</u>
Ag 2 2
I 2 2
Na 2 2
S 1 1
The balanced equation is
<u>2</u>AgI + <u>1</u>Na₂S ⟶ <u>1</u>Ag₂S +<u>2</u>NaI
Answer:
(B) depends solely on the ionization of water.
Explanation: hope this helps !
Answer:
A) 2.76 x 103 kJ
Explanation:
CH3OH (I)--------->CO (g) + 2H2 (g)
Number of moles contained in 87.1g of hydrogen gas= mass of hydrogen gas/ molar mass of hydrogen gas
Molar mass of hydrogen gas= 2gmol-1
Number of moles hydrogen gas = 87.1g/2gmol-1= 43.55 moles of hydrogen
1 mole of methanol yields 2 moles of hydrogen
x moles of methanol yields 43.55 moles of hydrogen
x= 43.55 moles of hydrogen × 1 mole of methanol/2 moles of hydrogen
x= 21.775 moles of methanol
Then;
If 1 mole of methanol absorbs 128KJ of energy
21.775 moles of methanol will absorb 21.775 × 128/1 = 2.7×10^3 KJ of heat
Answer:
The process of evaporation occurs
Explanation: