Mateo has a fish in a fish tank. Every day, he feeds the fish flakes of food. He also changes the water as necessary. He has an
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Answer:
Explanation:
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In this case, since 12.75 g of calcium iodide has the following number of moles (molar mass = 293.89 g/mol):
In such a way, since 1 mole of calcium iodide contains 2 moles of atoms of iodine, and one mole of atoms of iodine contains 6.022x10²³ atoms (Avogadro's number), we compute the resulting atoms as shown below:
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First, you need to count copper mass in alloy.
Second, you have to make an equation an find x ( the copper mass must be added). The answer is: 13,5g pure copper
Second, you have to make an equation an find x ( the copper mass must be added). The answer is: 13,5g pure copper