Chemistry, 15.11.2020 21:20 polloAngelo7671
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1. A student determines that the number of grams in a sample of Al2O3 is 18.3 grams. How many moles are in the sample?
2. A chemist needs 35 grams of CaO for a chemical reaction. How many moles of CaO are needed for the chemical reaction?
3. For an acid-base titration, 126 grams of H2SO4 were needed. How many moles of H2SO4 were needed for the Laboratory Activity?
4. A student needs 100 g of vinegar (CH3COOH) for a lab activity. How many moles does the student need?
Answers: 3
Chemistry, 22.06.2019 05:20
Identify and describe the three ways that mutations affect organisms.
Answers: 1
Chemistry, 22.06.2019 13:00
One of the hopes for solving the world's energy problem is to make use of the fusion reaction 21h +31h --> 42he + 10n + energy how much energy is released when 1 mol of deuterium is fused with 1 mol of tritium according to the above reaction? the masses of the atoms and the neutrons are as follows: 21h = 2.0140 amu 31h = 3.01605 amu 42he = 4.002603 amu 10n = 1.008665 amu. the speed of light is 2.9979 x 108 m/s.
Answers: 1
Chemistry, 22.06.2019 18:00
How many moles of oxygen gas are produced from the decomposition of six moles of potassium chlorate
Answers: 3
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1. A student determines that the number of grams in a sample of Al2O3 is 18.3 grams. How many...
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