Answer:
Price for 20years = $2,079.8
Recommendation: Solar energy is cheaper and more efficient for the community. The source is renewable source of energy with zero pollution
Explanation:
Answer:
Explanation:
6.90 mol x grams
2As + 6NaOH = 2Na3AsO3 + 3H2
6 mol 2 mol
192 g/mol
6.90 mol NaOH x 2 mol Na3AsO3/6 mol NaOH== 2.3 mol Na3AsO3
2.3 mol Na3AsO3 x 192 g/mol = 442 g Na3AsO3
A is your answer.
On the periodic table the atomic number is the number of protons inside the nucleus.
Answer:
electrons release energy as they return to the ground state
Explanation:
when electrons fall to the ground state they emit radiations of unique frequencies
which is seen as lines separated by dark spaces