Chemistry, 26.10.2021 06:30 kodarae2501
It is good practice when preparing a primary standard solution to Select one or more: mix the solution for two minutes after you have added solvent to the volumetric flask. dissolve the solid in the volumetric flask when the bulb is only partially filled with solvent. weigh the solid on an analytical balance. record the volume of solvent required to dissolve the solid.
Answers: 1
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 12:30
A50.0 ml sample of gas at 20.0 atm of pressure is compressed to 40.0 atm of pressure at constant temperature. what is the new volume? 0.0100 ml 0.325 ml 25.0 ml 100. ml
Answers: 1
Chemistry, 22.06.2019 14:50
Which of the following is most likely true about water in chemical systems? a) water dissolves nonpolar ionic compounds. b) water dissociates ionic compounds. c) water dissociates covalent molecules. d) water dissolves nonpolar covalent substances.
Answers: 1
It is good practice when preparing a primary standard solution to Select one or more: mix the soluti...
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