108/49 in ? 108/48 cd + ? in the equation above, what particle or type of radiation needs to be included on the right hand side in order to balance it?

a. gamma
b. positron
c. beta
d. proton
e. alpha

Air can be considered a mixture. which statement does not explain why?

For a research project, a student decided to test the effect of the lead(ii) ion (pb2+) on the ability of salmon eggs to hatch. this ion was obtainable from the water‐soluble salt, lead(ii) nitrate, which the student decided to make by the following reaction. pbo(s) + 2 hno3(aq) → pb(no3)2(aq) + h2o losses of product for various reasons were expected, and a yield of 86.0% was expected. in order to have 5.00 g of product at this yield, how many grams of pbo should be reacted? (assume that sufficient nitric acid, hno3, would be used.)

How to calculate the mass of copper