Answer:
<em>When molecular hydrogen (H2) and oxygen (O2) are combined and allowed to react together, energy is released and the molecules of hydrogen and oxygen can combine to form either water or hydrogen peroxide.</em>
Answer:
the ans
Explanation:
Sodium + chlorine → sodium chloride
The balanced chemical equation:
2Na + Cl2 → 2NaCl
According to the equation above: n(Na) = n(NaCl)
Moles of Na = Mass of Na / Molar mass of Na
The molar mass of Na is 22.9898 g mol-1.
Hence,
n(Na) = 86.33 g / 22.9898 g mol-1 = 3.755 mol
n(NaCl) = n(Na) = 3.755 mol
Moles of NaCl = Mass of NaCl / Molar mass of NaCl
Mass of NaCl = Moles of NaCl × Molar mass of NaCl
The molar mass of NaCl is 58.44 g mol-1.
Hence,
m(NaCl) = 3.755 mol × 58.44 g mol-1 = 219.44 g
m(NaCl) = 219.44 g
OR:
(86.33 g Na)×(1 mol Na/22.9898 g Na)×(2 mol NaCl/2 mol Na)×(58.44 g NaCl/1 mol NaCl) = 219.45 g
Answer: 219.44 grams (or 3.755 mol) of sodium chloride (NaCl) will be produced.
The correct answer is C. Climate change
Explanation:
Long-term environmental changes occur as major events affect the environment and ecosystems indefinitely. These events differ from short-term environmental changes because the effect of short-term environmental changes is mainly temporary. Also, long-term changes are usually gradual.
Climate change is an example of long-term environmental changes because this implies indefinite and major changes in weather patterns and ecosystems. For example, it is believed climate change will decrease the amount of ice in Earth, change sea level, and lead to the extinction of dozens of species. This does not occur with events such as el niño or a small asteroid impact that affect the environment for a short time and do not imply major changes.
Use the molar mass of ammonia to change the grams to moles and then use mole-mole ratio
100. g NH3 (1 mol NH3/ 17.04 g) (3 mol H2/ 2 mol NH)= 8.80 moles H2