Chemistry, 25.02.2020 03:04 tonimgreen17p6vqjq
A student burned 0.250 g of magnesium metal in an open crucible. Oxygen from the air combined with the metal forming magnesium oxide. If 0.421 g of magnesium oxide were produced, what mass of oxygen combined with the metal? 1. 0.171 g 2. 0.671 g 3. 1.684 g 4. 0.594 g
Answers: 3
Chemistry, 22.06.2019 17:40
Which statement about hf is true? it is zero for any compound in its standard state. it is positive when the bonds of the product store more energy than those of the reactants. it is negative when a compound forms from elements in their standard states. it is zero for any element that is in the liquid state.
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Chemistry, 23.06.2019 02:30
Apound is approximately 0.45 kilogram. a persons weighs 87 kilograms. what is the persons’s weight, in pounds, when expressed to the correct number of significant figures
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Chemistry, 23.06.2019 04:00
Calculate the mass of 0.750 mol of the following substance. na3po4. , i'm not quite sure on how to set up the problem to solve! : (
Answers: 1
A student burned 0.250 g of magnesium metal in an open crucible. Oxygen from the air combined with t...
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