Chemistry, 11.09.2021 01:20 tdahna0403
A student determines the density of an irregularly shaped block of lead in the laboratory. The displacement volume measured 25.2 mL using a graduated cylinder. The mass on the electric balance reads 285.768 g. What is the density of lead reporting to the appropriate number of significant figures allotted by the equipment used?
Answers: 3
Chemistry, 21.06.2019 13:50
The electron configuration for chromium is 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 5 4 s 1 instead of 1 s 2 2 s 2 2 p 6 3 s 2 3 p 6 3 d 4 4 s 1 . the configuration is an exception to the
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Chemistry, 21.06.2019 23:00
Which statement describes covalent bases? they have hydroxide ions. they produce hydrogen ions. they are often amines. they are named the same as ionic compounds.
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Chemistry, 22.06.2019 12:00
Ican determine the molar mass of an element by looking on the under the atomic mass for the element. for example the molar mass of phosphorus is 30.974 grams/mole. avogadro’s number tells me the amount of representative particles in 1 mole of any substance. this means 12.011 gram sample of carbon and a 32.0 gram sample of sulfur have the same number of atoms.
Answers: 1
A student determines the density of an irregularly shaped block of lead in the laboratory. The displ...
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