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Chemistry, 21.06.2019 14:20
Which of the following statements is not true? • a. covalent compounds have low melting and boiling points. • ob. covalent bonds between atoms of a compound are relatively weak compared to bonds between molecules. • c. covalent bonds occur between nonmetals. • d. covalent compounds are often gases or liquids.
Answers: 2
Chemistry, 21.06.2019 21:10
Identify one disadvantage to each of the following models of electron configuration: dot structures arrow and line diagrams written electron configurations type in your answer below.
Answers: 1
Chemistry, 21.06.2019 23:10
Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.
Answers: 1
Chemistry, 22.06.2019 06:00
How many atoms of mg are present in 97.22 grams of mg? 6.022 × 1023 2.408 × 1024 4.818 × 1024 5.855 × 1025
Answers: 2
When 8.70 kj of thermal energy is added to 2.50 mol of liquid methanol, it vaporizes. determine the...
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