Chemistry, 13.01.2021 19:00 bananakingdoof
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If a sample of magnesium has a mass of 72.9 g, how many moles of magnesium does the sample contain?
1.00 mole Mg
1.00 mole Mg
1.50 moles Mg
1.50 moles Mg
2.00 moles Mg
2.00 moles Mg
3.00 moles Mg
Answers: 2
Chemistry, 22.06.2019 08:30
The characteristic of two different types of reactions are shown below. reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of and element. which statement is true about the atoms of the elements that participate in the two reactions? a: their identity changes in both reaction a and b. b: their identity changes in reaction a but not b. c: their identity changes in reaction b but not a. d: their identity remains the same.
Answers: 1
Chemistry, 22.06.2019 11:00
Imagine that twenty i.u.’s of enzyme z were catalyzing the above reaction for one minute, under vmaxconditions, in a 3.00 ml assay volume. the assay is buffered with 20 mm phosphate buffer, ph 7.60. what will the ph be at the end of that one minute?
Answers: 2
Chemistry, 22.06.2019 16:50
What is conserved in the reaction shown below? h2(g) + cl2 (g) --> 2hcl(g)a. mass onlyb. mass and moles onlyc. mass, moles, and molecules onlyd. mass, moles, molecules, and volume
Answers: 2
Chemistry, 22.06.2019 17:30
A650 ml sodium bromine solution has a bromide ion concentration of 0.245 m. what is the mass (g) of sodium bromide in solution? a) 103.b)0.00155.c)16400.d) 16.4.e) 0.159
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If a sample of magnesium has a mass of 72.9 g, how many moles of magnesium does t...
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