Chemistry, 30.10.2021 01:00 MileenaKitana

What is the standard unit that astronomers use to measure the size of a star?

Answers: 2

Show answers

Other questions on the subject: Chemistry

Chemistry, 21.06.2019 20:30, dwighthibbert56

What was the procedure by which case united states vs lopez went to court

Answers: 1

continue

Chemistry, 22.06.2019 13:30, njood3113

Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?

Answers: 3

continue

Chemistry, 22.06.2019 17:50, kaylamount

Cryolite, na3alf6(s), an ore used in the production of aluminum, can be synthesized using aluminum oxide. start this question by first balance the chemical equation.1.) balance the equation: - alo3(s)+naoh(l)+hf(> na3alf6+h2o(g). 2.) if 17.5 kilograms of al2o3(s), 51.4 kilograms of naoh(l), and 51.4 kilograms of hf(g) react completely, how many kilograms of cryolite will be produced? 3.)which reactants will be in excess, (al2o3, naoh, or hf) 4.)what is the total mass of the excess reactants left over after the reaction is complete in kg?

Answers: 2

continue

Chemistry, 23.06.2019 03:30, nikkio4

In chemistry, the type of an atom (what element it is) is determined by: a) the number of protons it contains in its nucleus. b) the number of neutrons it contains in its nucleus. c) the number of protons it has in a cloud around the nucleus. d) the number of neutrons it has in a cloud around the nucleus. e) the number of electrons it exchanges with its neighbors.