2
Select the correct answer.
During a lab activity, students prepared two solutions separatel...
Chemistry, 01.12.2020 22:00 freedygotmoney
2
Select the correct answer.
During a lab activity, students prepared two solutions separately at the same temperature. Later they mixed the solutions and the temperature
dropped. Why?
ŠŠ.
There was no energy input during the chemical reaction.
OB. Energy was absorbed during the chemical reaction.
OC Energy was released during the chemical reaction.
OD The temperature of the surroundings dropped.
Reset
Next
Answers: 2
Chemistry, 22.06.2019 14:20
Which of the following are sources of revenue for media companies? a. direct sales to producers b.advertising and subscriptions c. online purchase d. capital investments
Answers: 1
Chemistry, 22.06.2019 19:50
If a gas has an initial pressure of 101kpa and a volume of 10l, then it expands to a volume of 20l, what is the new pressure?
Answers: 2
Chemistry, 22.06.2019 19:50
A2.5% (by mass) solution concentration signifies that there is a 2.5 % (by mass) solution concentration signifies that there is blank of solute in every 100 g of solution. of solute in every 100 g of solution
Answers: 3
Mathematics, 16.07.2019 12:20
History, 16.07.2019 12:20
Social Studies, 16.07.2019 12:20
Biology, 16.07.2019 12:20
History, 16.07.2019 12:20
History, 16.07.2019 12:20
History, 16.07.2019 12:20
History, 16.07.2019 12:20