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Learning Task 3: Solve the following problems below. Do this in a separate sheet of
paper
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1. Gold (Au) has been used to make ornamental objects and jewelry for thousands of
years. Gold nuggets found in a stream are very easy to work and were probably
one of the first metals used by humans. (1 mol of Gold (Au) - 196.97g). Calculate
the:
A. Number of moles in a 95.0 g sample of a gold nugget.
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B. Number of atoms in a 95.0 g sample of a gold nugget.
2. During exercise, lactic acid (C3H603) forms in the muscles causing muscle cramp.
If 5.0 g of lactic acid (C3H6O3) concentrate in your leg muscles, how many
molecules of lactic acid is causing you pain? (C = 12.0 g/mol, H = 1.008 g/mol,
O = 16.0 g/mol)​
Answers: 2
Chemistry, 21.06.2019 23:10
Nitrogen (n), phosphorus (p), and potassium (k) are the main nutrients in plant fertilizers. according to an industry convention, the numbers on the label refer to the mass percents of n, p2o5, and k2o, in that order. calculate the n: p: k ratio of a 30: 10: 10 fertilizer in terms of moles of each element, and express it as x: y: 1.0.
Answers: 1
Chemistry, 22.06.2019 05:30
Which of the following two events occur to create a sea breeze? select all that apply. warm air rises on the ocean and moves toward the land to cool warm air rises on land and moves toward the ocean to cool cool air moves from the ocean to be warmed by the land cool air moves from the land to be warmed by the ocean
Answers: 3
Chemistry, 23.06.2019 06:30
How can the number of core electrons be determined from the periodic table
Answers: 1
Learning Task 3: Solve the following problems below. Do this in a separate sheet of
paper
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