Which of these is an indication that a chemical reaction has occurred?
a. freezing of a...
Chemistry, 11.12.2019 10:31 KendallTishie724
Which of these is an indication that a chemical reaction has occurred?
a. freezing of a substance
b. boiling of a substance
c. melting of a substance
d. a change in color of a substance
Answers: 2
Chemistry, 22.06.2019 08:30
How would the number of moles (n) of o2 change if the atmospheric pressure doubled but all other variables stayed the same
Answers: 2
Chemistry, 22.06.2019 19:20
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.)
Answers: 1
Physics, 11.10.2019 00:20
Physics, 11.10.2019 00:20