Which trait would most likely lead a scientist to investigate a blood-thinning agent in the saliva of vampire bats?
a) creativity
b) curiosity
c) diversity
d) skepticism

Chemistry worksheet - i am not sure what they are asking for exactly?

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.)

What is the mass of oxygen gas is consumed in a reaction that produces 4.60mol so2