The answer to this question is D
The mole number of helium is 8/4=2 mol. Under same condition, the volume of gas is related to the mole number of the gas. So the mole number of chlorine is also 2 mol which is 142 g.
Answer: D.
Explanation: D. Acetone, Acetone may be rinsed over materials to wash off the explosive residue.
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Answer:
7.5 pounds per square-inch
At sea level, one square-inch of any surface has about 15 pounds of air sitting on top of it. At 18,000 feet, that same square inch has only 7.5 pounds per square-inch (psi) exerted on it.
Explanation:
- Chemical .
- As you can't get sodium or chloride back from sodium chloride.
- Sodium chloride is a ionic compound so the bonding is too hard to break .
There are two types of reactions
- Physical
- Chemical
