Question

radiation of zero mass
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Answer 1

Explanation:

2 g equivalent of Cu reacts with 2g equivalent of HNO3. So , eqv wt of HNO3 = 4/2 mol wt = 126. Don't forget the principle that equal number of equivalents of reactants react with each other.

Answer 2

Answer:

Gamma radiation

Explanation:

It has no mass and also a speed equal to that of light in vaccum