29. How many moles of Ca atoms are in 540.3 g Ca? a. 13.48 mol b....
a.) how many moles of iron is 66.8 g of Fe? __________________ mol Fe b.) How many grams of iron is 4.89 x 10-2 mol Fe? __________________ g Fe c.) How many atoms are present in 0.950 mol of uranium? _________________ x10 _________________ U atoms d.) 3.84 × 106 sulfur atoms is how many moles? __________________ x10 _______________ moles
1. How many atoms are represented by: a. 0.96 moles Ca b. 0.39 moles Ga c. 0.94 moles Ag d. 0.39 moles Mg 2. How may molecules are represented by a. 0.39 moles CH3COOH b. 0.71 moles N2 C. 0.72 moles C&H 206 d. 0.57 moles 02 3. How may grams are represented by: a. 6.11 moles C6H1206 b. 1.89 moles 02 c. 6,61 moles NaHCO3 d. 1.14 moles Na 4. How may moles are represented by: a. 26.32 grams...
How many moles of calcium (Ca) atoms are in 79.6 g of Ca?
5a) 25.0 g of C are how many moles? (2.08 moles) 24 atoms of C) 25.0 g of C are how many atoms of C? (1.25 x 10 -1 g) 20 moles of Ag are how many atoms of Ag? (6.456 x 10 -3 b) 1.072 x 10 moles of Ag are how many grams? (1.156 x 10 -3 1.072 x 10 atoms) -10 g) -12 moles) 12 c) 2.408 x 10 molecules of Cl are how many grams? (2.835...
19. One nanogram does not seem like a very large number. How many magnesium atoms are there in 1.00 ng of magnesium? A) 4.11 x 10 atoms B) 2.48 x 10" atoms C) 6.83 x 10 atoms D) 6.02 x 10" atoms E) 1.46 x 104 atoms 20. How many moles of O atoms are in 25.7 g of CaSO.? A) 0.189 mol B) 0.755 mol C) 4.00 mol D) 1.14 x 10^mol E) 4.55 x 10" mol 21. Balance...
2. Menerva has 1 mol of AICI. How many moles of ions are there in 1 mol of AICI:? a. I mol i mo 10 lat b. 2 mol miza c. 3 mol d. 4 mol e, 6 mol Answer: 3. Jessica has 64.0 g of sulfur dioxide (SO2). How many oxygen atoms are there in 64.0 g of SO2? a. 64 atoms b. 128 atoms c. 6.022 x 10” atoms d. 1.806 x 10 4 atoms c. 1.204 x...
28) A sample of sulfur contains 1.81 x 1024 atoms of sulfur How many moles of sulfur 28) does this represent? A) 3.01 mol B) 1.81 mol C) 1.77 mol D) 1.09 mol E) 0.333 mol 29) When the equation below is balanced with the lowest possible whole number coefficients, what is the sum of the coefficients? 29) Ca(s) + HCl(r) → CaCl2(s) + H26) A) 2 B) 5 C) 4 D) 8 E) 10 o) Aspirin is the common...
How many atoms are there in 5.10 moles of sulfur (S)? How many moles of calcium (Ca) atoms are in 77.4 g of Ca? Calculate the molar mass of a compound if 0.372 moles of it has a mass of 152 g.
How many total atoms are in 0.170 g of P2O5? How many moles of Fe2O3 are in 211 g of the compound? For the given elements, convert the given mole amounts to grams. How many grams are in 0.0464 moles of sodium? How many grams are in 0.250 moles of cobalt? How many grams are in 0.790 moles of selenium? Calculate the number of atoms in a 5.49 × 103 g sample of lithium. How many moles of MgS2O3 are...
2. Complete the following calculations: a. How many atoms are in 0.932 moles of copper? b. How many moles of water are in 9.028 x 1022 water molecules? C. What is the molar mass of calcium carbonate? d. How many grams of water are in a 1.02 mole sample of water? e. How many moles of methane are there in 278 g of methane?