Answer:
The answer to your question is: = 2.52 x 10²¹ molecules
Explanation:
mass of fuel = 13.56 - 13.53 = 0.04 g of fuel
mass of oxygen = ?
mass of water = 0.054 g
mass of carbon dioxide = 0.1198 g
To solve this problem just remember the Lavoisier law of conservation of mass that says: Mass is neither created nor destroyed in chemical reactions,
Reaction:
Fuel + Oxygen ⇒ Water + Carbon dioxide
0.04 + mass O2 ⇒ 0.054 + 0.1198
mass O2 = 0.054 + 0.1198 - 0.04
mass O2 = 0.1338 g
MW O2 = 32
1 mol of O2 -------------------- 32 g
x ------------------- 0.1338g
x = 0.1338(1) / 32 = 0.0042 moles
1 mol ----------------- 6,023 x 10 ²³ molecules
0.0042 moles ----- x
x = 0.0042 (6,023 x 10 ²³ ) / 1 = 2.52 x 10²¹ molecules
The answer is false. Hope this helps
Answer:- 0.143 M
Solution:- HCl and NaOH reacts in 1:1 mol ratio as shown in the below reaction:
Let's calculate the initial moles of HCl and the moles of NaOH added to it:
= 0.075 mol HCl
= 0.025 mol NaOH
Since they react in 1:1 mol ratio, 0.025 mol of NaOH will react with 0.025 moles of HCl.
Remaining moles of HCl = 0.075 - 0.025 = 0.050
Total volume of the resulting solution = 0.250 L + 0.100 L = 0.350 L
So, the concentration of HCl in the resulting solution =
= 0.143 M
Hence, the concentration of HCl acid in the resulting solution is 0.143 M.
Answer:
solubility of salt at 10 degree Celsius is 20 how does it what does it means what happens if the temperature of saturated solution is increased
Explanation:
solubility of salt at 10 degree Celsius is 20 how does it what does it means what happens if the temperature of saturated solution is increased
Answer:basically anything you can taste, smell, or hold consists of matter and is therefore a chemical.