Answer:
25.5 g
Explanation:
First, you will need a balanced chemical equation
CuO + H₂ ==> H₂O + Cu
From the equation above, we can see that for every 1 mole of CuO (copper(II) oxide), 1 mole of Cu (copper) is produced.
Convert grams of CuO to moles. You should get 0.402 mol. Now with the relationship established above, you can see that you should ideally get 0.402 mol. Convert this to grams. Your answer should be 25.5 g.
Answer:
because not enough of the parent isotope remains to measure accurately. because not enough of the daughter product has formed to be detectable.
Explanation:
Hope it helps
You know that neutrons<span> are found in the nucleus of an </span>atom<span>. Under normal conditions, protons and </span>neutrons<span> stick together in the nucleus. During radioactive decay, they may be knocked out of there. </span>Neutron<span> numbers are able to change the mass of </span>atoms<span>, because they weigh about as much as a proton and electron together.</span>
