Answers: 1
Chemistry, 22.06.2019 12:00, sophiaa23
Which of the following is an example of physical change not a chemical change? a) a log gives off heat and light as it burns. b) a tree stores energy from the sun in its fruit. c) a penny lost in the grass slowly changes color. d) a water pipe freezes and cracks on a cold night.
Answers: 2
Chemistry, 22.06.2019 16:30, joshua1255
Find the number of moles of argon in 364g of argon.
Answers: 2
What is the volume of 11 moles of N2 at STP?...
Mathematics, 08.07.2019 17:00
Mathematics, 08.07.2019 17:00
Physics, 08.07.2019 17:00
History, 08.07.2019 17:00
Biology, 08.07.2019 17:00