Explanation:
The equation of the reaction is given as;
12C + 16 H2 --> 4 C3H8
a. Simplify the equation;
The coefficients are 12, 16 and 4.
4 is a common factor, so divide all through by 4.
12/4 = 3, 16/4 = 4, 4/4 = 1
The equation is given as;
3 C + 4 H2 --> C3H8
b. If 21 moles of C3H8 are formed, how many moles of C was needed.
From the reaction;
3 mol C atoms reacts to form 1 mol of C3H8
x mol would react to form 21 moles of C3H8
3 = 1
x = 21
x = 21 * 3
x = 63 moles
The number of shells increase, the energy level their outer shell have decreases as we go down wards,
Answer:
0.014 theoretical yield and 79% percentage yield
Answer:
segment 4
Explanation:
Its segment 4 because even though they only traveled 55(km) its only been 1 hour. Every other one took ether 1 hour and 5 minutes or 2 hours.(this is my honest opinion im sorry if its wrong)
Nitrogen oxides help cause some kinds of air pollution. Nitrogen dioxide combines with other chemicals to make smog. It also combines with water droplets in the air to make nitric acid. Nitric acid is one of the kinds of acid in acid rain. Volcanoes and lightning make some of the nitrogen oxides in Earth's atmosphere. Humans make lots of nitrogen oxides, too. When fuel burns, nitrogen in the air combines with oxygen to make nitrogen oxides. The engines of cars, trucks, and buses make lots of nitrogen oxides. Nitrogen oxides are not all bad. Humans use nitric oxide to make nitric acid. Nitric acid is used to make fertilizer and some kinds of explosives.