Chemistry, 22.06.2020 23:55 tieragroff
You are performing an experiment and produce an unidentified compound. You know it is composed of carbon, calcium, and oxygen but you do not know how many of each are present. You determine its relative formula mass is 100.1 g/mol. What is its molecular formula?
A. Ca2CO
B. CaCO3
C. Ca2C2O2
D. all of these
Answers: 1
Chemistry, 21.06.2019 15:00
Theoretically, which metal should be the most reactive? hydrogen lithium francium fluorine
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Chemistry, 21.06.2019 18:30
Calculate the change in entropy if br2(l) is converted to br2(g). s° for br2(l) = 152.2 j/(mol•k) s° for br2(g) = 245.5 j/(mol•k) s° for br(g) = 175.0 j/(mol•k)
Answers: 3
Chemistry, 22.06.2019 07:00
Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils
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Chemistry, 22.06.2019 17:40
How much heat is added if 0.814g of water increase in temperature by 0.351 degree c?
Answers: 3
You are performing an experiment and produce an unidentified compound. You know it is composed of ca...
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