There are 17 nonmetals on the periodic table of elements.
Answer:
Garnet is a hard transparent mineral that is often used as gemstones and abrasives and quartz is the most abundant mineral on the earth's surface. They are both minerals that come out of the earth and that's about the most they have in common.
Explanation:
I got this answer correct.
Answer:
True
Explanation:
Because fossil fuels are non-renewable resources and that means it take thousands of years to form. Also, it harm the environment and create this climate change. While renewable resources, however, don't take thousand of years to form and it do not harm the environment.
Answer:
2CO + O₂ → 2CO₂ ΔH = -566 kj
Explanation:
Given data:
Energy evolved when 1 mole of CO react = 283 Kj
Energy evolved when 2 mole of CO react = ?
Solution:
Chemical equation:
2CO + O₂ → 2CO₂
It is given when one mole of CO react with oxygen 283 KJ energy is produced.
When 2 mole react,
2 ×-283 kj = -566 kj
Thermal equation:
2CO + O₂ → 2CO₂ ΔH = -566 kj
