Chemistry, 27.07.2021 08:10 maggiemae4993
Place 2 drop of ethylamine in a test tube and add 5 to drops of water. shake to mix and test the solution with universal indicator paper, observing the ph. repeat with phenylalanine. what were the ph values of the amines? which was more
basic?
Answers: 3
Chemistry, 22.06.2019 10:50
A100 kmol/h stream that is 97 mole% carbon tetrachloride (ccl4) and 3% carbon disulfide (cs2) is to be recovered from the bottom of a distillation column. the feed to the column is 16 mole% cs2 and 84% ccl4, and 2% of the ccl4 entering the column is contained in the overhead stream leaving the top of the column. calculate the mass and mole fractions of ccl4 in the overhead stream, and determine the molar flow rates of ccl4 and cs2 in the overhead and feed streams. 12. mw_ccla- 153.82; mw_cs2-76.14.
Answers: 3
Chemistry, 22.06.2019 12:00
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 13:00
What happens to the average kinetic energy of a gas when the particles of the gas collide against each other at a constant temperature and volume? explain your answer.
Answers: 3
Chemistry, 22.06.2019 15:00
According to the diagram, what sources contribute to the phosphorus found in soil? according to the diagram, phosphorus found in soil contributes phosphorus to what other sources?
Answers: 1
Place 2 drop of ethylamine in a test tube and add 5 to drops of water. shake to mix and test the sol...
English, 13.05.2021 19:20
Computers and Technology, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20
English, 13.05.2021 19:20
Mathematics, 13.05.2021 19:20