(plz anwser all questions 15 points)
question 1: check all the statements that are corr...
Chemistry, 28.10.2019 23:31 BradFarquharson472
(plz anwser all questions 15 points)
question 1: check all the statements that are correct. conservation of mass means:
a: we can start a reaction with different types of elements than we have at the end of the reaction.
b: matter cannot be created
c: matter can be destroyed in a chemical reaction
d: we must start and end with the same amounts of matter
question 2: select all of the signs of a chemical reaction
a: a gas is released
b: a solid is formed
c: a temperature change happens
d: the change can be easily undone
e: the state of matter changes
f: a color change happens
Answers: 1
Chemistry, 21.06.2019 17:00
An aqueous solution of hydroiodic acid is standardized by titration with a 0.186 m solution of calcium hydroxide. if 26.5 ml of base are required to neutralize 20.3 ml of the acid, what is the molarity of the hydroiodic acid solution? m hydroiodic acid
Answers: 1
Chemistry, 21.06.2019 22:30
Imagine that youβre getting ready to move to a new city. when people move, they are influenced by push factors and pull factors, and you have many reasons for your move. which of the following factors is an example of a pull factor? a. wanting to move because youβve found a great new school somewhere new b. needing to move because there are not enough resources in your old hometown c. being forced to move because your old home is gone d. having to move because there are no jobs in your current hometown
Answers: 1
Chemistry, 22.06.2019 15:30
The identities of substances are the same before and after which type of change
Answers: 1
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