What is the mass of 0.75 moles of(NH4)3PO4?O 111.75 gO 121.75 gO 131.75 gO 101.75 g What is the molality of a solutionmade by dissolving 2 moles of NaOHin 400 grams of water?5 mol/kg. solventO3 mol/kg. solvent04 mol/kg solventO 2.5 moles /kg solvent

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What is the mass of 0.75 moles of (NH4)3PO4? O 111.75 g O 121.75 g O 131.75 g 101.75 g

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Concept explainers

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.

Question

What is the mass of 0.75 moles of
(NH4)3PO4?
O 111.75 g
O 121.75 g
O 131.75 g
O 101.75 g

What is the molality of a solution
made by dissolving 2 moles of NaOH
in 400 grams of water?
5 mol/kg. solvent
O3 mol/kg. solvent
04 mol/kg solvent
O 2.5 moles /kg solvent

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