You are working in an astrophysics lab studying newly discovered asteroids. You determine that one of the asteroids is emitting radiation but you are not sure what kind. You use a spectroscope and determine that the asteroid has large deposits of two very heavy, dense elements with one element being slightly lighter than the other. You determine that the heavier element is decaying into the lighter element. What type of radiation is it most likely emitting? A. Gamma B. Delta C. Beta D. Alpha

What is the relation between concentration of reactants and the rate of chemical reaction?

Abeaker with 2.00×102 ml of an acetic acid buffer with a ph of 5.000 is sitting on a benchtop. the total molarity of acid and conjugate base in this buffer is 0.100 m. a student adds 4.70 ml of a 0.360 m hcl solution to the beaker. how much will the ph change? the pka of acetic acid is 4.740.

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.)