(b) Quantities of chemicals, expressed in moles, can be used to find the formula of acompound, to establish an equation and to determine reacting masses.A compound contains 72% magnesium and 28% nitrogen. What is its empiricalformula?( 2)2. A student investigates the rate of reaction between lumps of calcium carbonate anddilute hydrochloric acid using the apparatus shown.CaCo3(s) + 2HCI (aq)CaCI 2(aq) + CO2(g) + H2O(I)The calcium carbonate was in excess.gas syringelumps of calcium carbonatedilute hydrochloric acid

1) Compound contains 78 % Mg and 28 % N2 Atomic masses of Mg and Nitrogen = 24 and 14 Hence,…

Answered: A compound contains 72% magnesium and…

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A compound contains 72% magnesium and 28% nitrogen. What is its empirical formula?

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

(b) Quantities of chemicals, expressed in moles, can be used to find the formula of a
compound, to establish an equation and to determine reacting masses.
A compound contains 72% magnesium and 28% nitrogen. What is its empirical
formula?
( 2)
2. A student investigates the rate of reaction between lumps of calcium carbonate and
dilute hydrochloric acid using the apparatus shown.
CaCo3(s) + 2HCI (aq)
CaCI 2(aq) + CO2(g) + H2O(I)
The calcium carbonate was in excess.
gas syringe
lumps of calcium carbonate
dilute hydrochloric acid

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