Chemistry, 12.12.2020 17:10 natalie2sheffield
When testing for hydrogen gas in the laboratory a glowing splint is inserted into the gas which results in a pop sound. What is associated with the formation of the pop sound?
A. physical change
B. chemical change
C. exothermic reaction
D. endothermic reaction
Answers: 1
Chemistry, 21.06.2019 17:30
What are the major products produced in the combustion of c10h22 under the following conditions? write balanced chemical equations for each. a. an excess of oxygen b. a slightly limited oxygen supply c. a very limited supply of oxygen d. the compound is burned in air
Answers: 2
Chemistry, 21.06.2019 18:10
Which statements describe polyatomic ions? check all that apply. polyatomic ions have many charges. polyatomic ions have one overall charge. polyatomic ions repel other ions to form ionic bonds. polyatomic ions attract other ions to form ionic bonds. polyatomic ions are made up of only one type of atom. polyatomic ions are made up of two or more types of atoms.
Answers: 2
Chemistry, 22.06.2019 07:30
The volume of helium in a blimp is 6.28 x 10^9 millimeters. the density of helium in the blimp is .1786 kilogram/meter^3. find the mass of the helium in the blimp.
Answers: 1
Chemistry, 22.06.2019 21:00
Once similarity and one difference between a mixture of elements and a mixture of compounds
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