How many grams of copper nitrate can be produced from 0.78 grams of silver nitrate and excess copper?

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles

Can someone me with 3 and 4 plz. this is for masteries test.

Acm ruler with main graduations from 1 to 10 from left to right there are 10 secondary graduations between each of the main graduations there is a line that begins. at the left end of the ruler 10 secondary graduations to the left of the “1 main graduation the right end of the line ends on the eighth secondary graduation to the right of 3 how long is the line