18 pts 1. Indicate the number of protons and neutrons for the following isotopes. (each box is 0.5 pts)
Symbol
# of Protons
# of Neutrons neutron/proton ratio
89
49
40
40
Zr
54
30
25
130
Zn
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Using complete sentences, explain how to predict the products and balance the reaction between sulfuric acid and potassium hydroxide.

What is the ph of a 0.0010 m hno3? 1.0 3.0 4.0 5.0

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.)