Please answer / YOU Must Show Your work/ the problems and post your assignment before the DEADLINE. Good Luck!!! 1. Calculate the mass of each sample. a. 1.05 x 10 26 atoms of neon, Ne(g) b. 8.72 x 10²1 molecules of karakin, C15H21N3015(s) 2. Determine the number of molecules or formula units in each sample. a. 32.4 g of lead(11) phosphate, Pb3(PO4)2(s) b. 48 kg of molybdenum (VI) oxide, MoO3 (s) 3. Rubbing alcohol oft en contains propanol, C 3 H 7 OH(I). Suppose that you have an 85.9 g sample of propanol. a. How many carbon atoms are in the sample? b. How many oxygen atoms are in the sample? Hint C3H7OH Molecule=1 Carbon atoms=3 Hydrogen atoms=8 Total atoms=12 #=n x Na #=n x Na x3 #=n x Na x8 #=n x Na x12 4. Many common dry-chemical fire extinguishers contain ammonium phosphate, (NH4)3PO4(s), as their principal ingredient. If a sample of ammonium phosphate contains 4.5 x 10²1 atoms of nitrogen, what is the mass of the sample? Hint: this question is V.S of question No. 3/ (NH4)3PO4(s), #= 4.5 x 10 2¹ atoms of nitrogen (Divide)/3= n= # / Na
Please answer / YOU Must Show Your work/ the problems and post your assignment before the DEADLINE. Good Luck!!! 1. Calculate the mass of each sample. a. 1.05 x 10 26 atoms of neon, Ne(g) b. 8.72 x 10²1 molecules of karakin, C15H21N3015(s) 2. Determine the number of molecules or formula units in each sample. a. 32.4 g of lead(11) phosphate, Pb3(PO4)2(s) b. 48 kg of molybdenum (VI) oxide, MoO3 (s) 3. Rubbing alcohol oft en contains propanol, C 3 H 7 OH(I). Suppose that you have an 85.9 g sample of propanol. a. How many carbon atoms are in the sample? b. How many oxygen atoms are in the sample? Hint C3H7OH Molecule=1 Carbon atoms=3 Hydrogen atoms=8 Total atoms=12 #=n x Na #=n x Na x3 #=n x Na x8 #=n x Na x12 4. Many common dry-chemical fire extinguishers contain ammonium phosphate, (NH4)3PO4(s), as their principal ingredient. If a sample of ammonium phosphate contains 4.5 x 10²1 atoms of nitrogen, what is the mass of the sample? Hint: this question is V.S of question No. 3/ (NH4)3PO4(s), #= 4.5 x 10 2¹ atoms of nitrogen (Divide)/3= n= # / Na
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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Please show the work on notebook papers. 1,2,3,4 Part. Chemistry
Transcribed Image Text:Please answer / YOU Must Show Your work/ the
problems and post your assignment before the
DEADLINE.
Good Luck!!!
1. Calculate the mass of each sample.
a. 1.05 x 10 26 atoms of neon, Ne(g)
b. 8.72 x 1021 molecules of karakin, C15H21N3015(s)
2. Determine the number of molecules or formula units in each sample.
a. 32.4 g of lead(II) phosphate, Pb3(PO4)2(s)
b. 48 kg of molybdenum(VI) oxide, MoO3 (s)
3. Rubbing alcohol oft en contains propanol, C 3 H 7 OH(I). Suppose that you have an
85.9 g sample of propanol.
a. How many carbon atoms are in the sample?
b. How many oxygen atoms are in the sample?
Hint
C3H7OH
Molecule=1
Carbon atoms=3
Hydrogen atoms=8
Total atoms=12
#=n x Na
#=n x Na x3
#=n x Na x8
#=n x Na x12
4. Many common dry-chemical fi re extinguishers contain ammonium phosphate,
(NH4)3PO4(s), as their principal ingredient. If a sample of ammonium phosphate
contains 4.5 * 1021 atoms of nitrogen, what is the mass of the sample?
Hint: this question is V.S of question No. 3 /
(NH4)3PO4(s),
#= 4.5 x 10 21atoms of nitrogen (Divide)/3=
n= # / Na
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