Answer:
About 60 grams
Explanation:
The balanced equation of the reaction is given as;
2H2(g) + O2(g) → 2H2O(l)
From the equation;
2 mol of H2 reacts with 1 mol of O2
3 mol of H2 would require 3/2 mol of O2 (considering the 2:1 ratio)
The limiting reactant is H2 as it would be used up before H2. It determines the amount of product that would be formed.
2 mol of H2 produces 2 mol of H2O
3 mol of H2 would produce 3 mol of H2O (Considering the 1 : 1 ratio)
Converting moles to mass;
Mass = Molar mass * Number of moles
Mass = 18 * 3 = 54 g
The correct option is; About 60 grams
<span> is made up of a carbon atom covalently double bonded to two oxygen atoms. Carbon dioxide exists in Earth's atmosphere as a trace gas at a concentration of about 0.04 percent by volume.</span>
Answer: The distance of the earth from the sun is 
Explanation:
Speed of light = 
Time taken to travel from sun to earth = 8.30 mins = 
(1min=60 s)
As we know ; Speed is defined as the distance travelled per unit time.
Hence distance between sun and earth =
Thus the distance of the earth from the sun is
