1. Perform the following: a. Write the formula for copper (II) phosphate.. b. Calculate the molecular weight for copper (II) phosphate. c. Calculate the number of moles of copper (II) phosphate in 129.4 g of copper (II) phosphate

1. Perform the following: a. Write the formula for copper (II) phosphate.. b. Calculate the molecular weight for copper (II) phosphate. c. Calculate the number of moles of copper (II) phosphate in 129.4 g of copper (II) phosphate

Introductory Chemistry: A Foundation

9th Edition

ISBN:9781337399425

Author:Steven S. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Donald J. DeCoste

Chapter8: Chemical Composition

Section: Chapter Questions

Problem 47QAP: Calculate the percent by mass of the element listed first in the formulas for each of the following...

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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

For all problems involving calculations, show your work. Carry the units through each
calculation and follow significant figure rules. Practice on scratch paper then here.
1. Perform the following:
Write the formula for copper (II) phosphate..
b. Calculate the molecular weight for copper (11) phosphate.
c. Calculate the number of moles of copper (II) phosphate in 129.4 g of copper (II) phosphate
d. Calculate the total number of atoms of phosphorus in 129.4 g of copper (II) phosphate.
97

2. Consider the compound potassium hypochlorite.
a. Write out the formula for potassium hypochlorite.
b. Determine the molecular weight (molar mass) of potassium hypochlorite.
c. Calculate the number of moles of potassium hypochlorite in 78.54 grams of the compound.
d. Calculate the total number of atoms of oxygen in 78.54 grams of potassium hypochlorite.
3. Norepinephrine (C3H₁NO3) is the neurotransmitter responsible for your "flight or fight" response by
increasing your alertness. How many oxygen atoms are there in 13.2 g of norepinephrine?

Expert Solution

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Here we calculate the chemical formula using the charge neutral method. Then we calculate molar mass using the atomic masses. Finally we calculate the number of moles.

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Transcribed Image Text:2. Consider the compound potassium hypochlorite. a. Write out the formula for potassium hypochlorite. b. Determine the molecular weight (molar mass) of potassium hypochlorite. c. Calculate the number of moles of potassium hypochlorite in 78.54 grams of the compound. d. Calculate the total number of atoms of oxygen in 78.54 grams of potassium hypochlorite. 3. Norepinephrine (C3H₁NO3) is the neurotransmitter responsible for your "flight or fight" response by increasing your alertness. How many oxygen atoms are there in 13.2 g of norepinephrine?
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