subject
Chemistry, 15.07.2019 00:00 dontap3037

Which is true according to the law of conservation of energy? a. in a closed system, the total amount of energy in the universe keeps on changing. b. the supply of energy is limited, so it is essential to conserve it. c. in a closed system, energy can be created and destroyed. d. in a closed system, energy cannot be used faster than it is created. e. in a closed system, the total energy always remains constant.

ansver
Answers: 2

Another question on Chemistry

question
Chemistry, 21.06.2019 15:00
The density of a planet is 0.69 g/cm3 (density of water is 1.0 g/cm3). which of the following planets might this be? a. mercury b. venus c. saturn d. mars
Answers: 3
question
Chemistry, 21.06.2019 17:00
Look at the reaction below: ca(hco3)2 --> caco3 + co2 + h2o first, balance the reaction. once balanced, use dimensional analysis or another method to find out how many moles of carbon dioxide will be produced if we start with 16.5 moles of calcium bicarbonate (calcium hydrogen carbonate). = mol of co2 number needs to be reported to three significant figures.
Answers: 1
question
Chemistry, 22.06.2019 02:30
Needthe meter is the standard unit for: 1) height 2) length 3) weight 4) mass
Answers: 3
question
Chemistry, 22.06.2019 08:00
What is the molarity of 60.0 grams of naoh dissolved in 750 milliliters of water? a) 1.1 m b) 2.0 m c) 12 m d) 75 m
Answers: 1
You know the right answer?
Which is true according to the law of conservation of energy? a. in a closed system, the total amou...
Questions
question
English, 29.06.2019 08:40
question
Mathematics, 29.06.2019 08:40
question
Mathematics, 29.06.2019 08:40
Questions on the website: 13722367