Chemistry, 05.11.2020 17:20 dlatricewilcoxp0tsdw
A thermometer with a temperature reading of 22 oC is placed inside a beaker of water. After a few minutes, a student reads the thermometer. The thermometer reads 45 oC Describe the direction of heat flow between the thermometer and the water in the beaker.
Answers: 2
Chemistry, 22.06.2019 08:30
Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?
Answers: 1
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, 23.06.2019 01:20
How can parts of a solution be separated by chromatography?
Answers: 1
A thermometer with a temperature reading of 22 oC is placed inside a beaker of water. After a few mi...
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