**Question 2: How many moles are present in 100 grams of potassium?**- ○ 3.2 mol K- ○ 3.9 x 10³ mol K- ○ 2.6 mol K- ○ 0.39 mol KThis is a multiple-choice question designed to test the knowledge of students in calculating moles from a given amount of potassium. No graphs or diagrams are present. The unbalanced equation below shows the combustion of methane.\[\_\_ \, \text{CH}_4 + \_\_ \, \text{O}_2 \rightarrow \_\_ \, \text{CO}_2 + \_\_ \, \text{H}_2\text{O}\]Which series of numbers represents the coefficients necessary to balance the equation?- ( ) 1, 2, 1, 2- ( ) 0, 3, 2, 2- ( ) 1, 1, 1, 2- ( ) 2, 2, 1, 4

For first question ; Third Option 2.6 mol of K For second question ; First option 1,2,1,2

Answered: 2. How many moles are present in 100…

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2. How many moles are present in 100 grams of potassium? O 3.2 mol K O 3.9 x 103 mol K 2.6 mol K 0.39 mol K

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

The unbalanced equation below shows the combustion of methane.

\[\_\_ \, \text{CH}_4 + \_\_ \, \text{O}_2 \rightarrow \_\_ \, \text{CO}_2 + \_\_ \, \text{H}_2\text{O}\]

Which series of numbers represents the coefficients necessary to balance the equation?

- ( ) 1, 2, 1, 2
- ( ) 0, 3, 2, 2
- ( ) 1, 1, 1, 2
- ( ) 2, 2, 1, 4

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