Which of the following correctly identifies how a power plant changes the atmosphere? A. A plant powered by coal releases oxygen.

B. A plant powered by geothermal energy releases nitrogen oxides.

C. A plant powered by nuclear energy releases sulfur dioxide.

D. A plant powered by natural gas releases carbon dioxide.

Chromosome 17 is made of over million base pairs.

How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?

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.)