Chemistry, 21.05.2021 19:50 chloeneedshelp2008
1. What is the mass in grams of 2.25 mol of the element iron, Fe?
2. What is the mass in grams of 0.375 moles of the element potassium, K?
3. How many moles of calcium, Ca, are in 5.00 g of calcium?
4. How many moles of gold, Au, are in 3.60 x 100 g of gold?
5. How many moles of lead, Pb, are in 1.50 x 1012 atoms of lead?
6. How many moles of tin, Sn, are in 2500 atoms of tin?
7. What is the mass in grams of 7.5 x 1015 atoms of nickel, Ni?
8. How many atoms of sulfur, S, are in 4.00 grams of sulfur?
Answers: 3
Chemistry, 21.06.2019 23:10
Which statement describes both homogeneous mixtures and heterogeneous mixtures?
Answers: 1
Chemistry, 22.06.2019 07:00
Which set of characteristics best describes igneous rock? a) largest type of rock, made of organic matter, hardest type of rock b) least abundant type of rock, made of other rocks, made mostly of minerals c) found on all continents, contains wavy bands of stripes, contains fossils d) most abundant type in earth's crust, made of magma/lava, contains no fossils
Answers: 1
Chemistry, 22.06.2019 10:30
Use this information to determine the number of calends electrons in the atoms. which of the following correctly compares the stability of the two atoms? a) both are unreactive b) both are highly reactive c) a is unreactive and d is reactive d) a is reactive and d is unreactive
Answers: 2
1. What is the mass in grams of 2.25 mol of the element iron, Fe?
2. What is the mass in grams of 0...
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