Chemistry, 30.11.2019 04:31 bigbrogamer
Astudent attempted to identify an unknown compound by the method used in the experiment. she found that when she heated the sample weighing 0.4862g, the mass barely changed, dropping to 0.4855g. when the product was converted to a chloride, the mass went up to 0.5247g. is the sample a carbonate? what are the two compounds that might be the unknown?
Answers: 1
Chemistry, 22.06.2019 06:30
The following reaction shows sodium carbonate reacting with calcium hydroxide. na2co3 + ca(oh)2 → naoh + caco3 how many grams of naoh are produced from 20.0 grams of na2co3? (molar mass of na = 22.989 g/mol, c = 12.01 g/mol, o = 15.999 g/mol, ca = 40.078 g/mol, h = 1.008 g/mol) 12.2 grams 15.1 grams 24.4 grams 30.2 grams
Answers: 2
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Mary is conducting an experiment on how pollution affects plant growth. how can she ensure that her data are reliable?
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Chemistry, 23.06.2019 04:20
The lewis diagrams for magnesium and fluorine are shown below. what is the correct chemical formula for magnesium fluoride? a. mgf b. mg2f c. mgf2 d. mg2f3
Answers: 1
Astudent attempted to identify an unknown compound by the method used in the experiment. she found t...
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