How many moles are each of the following? (a) 3.17 x 1022 atoms of C
How many moles of atoms are in each elemental sample? 3.88×1022 He atoms
4. How many moles of hydrogen atoms are needed to make in 4.45 x 1022 formula units of (NHa) PO.? Show all calculations. CANO ulob o 0.07 5. How many atoms of nitrogen are found in 6.45 grams of (NH4), PO,? Show all calculations
12. Calculate the number of moles containing each of the following (a) 1.00 x 1022 atoms of cobalt, Co (b) 2.00 x 1023 molecules of carbon dioxide, CO2 (c) 3.00 x 1024 formula units of cobalt(II) carbonate, COCO,
1. How many moles of Cs are there in a sample that contains 3.17×1022cesium atoms? 2. How many cesium atoms are there in a sample that contains 3.69 mol of Cs? 3. How many moles of Kr are there in a sample that contains 3.23×1022krypton atoms? 4. How many krypton atoms are there in a sample that contains 1.14 mol of Kr? 5. What is the mass of 1.38×1024atoms of magnesium ? 6. How many magnesium atoms are there in...
a. How many moles of xenon trioxide are present in 4.95 x 1022 molecules of this compound? moles b. How many molecules of xenon trioxide are present in 4.16 moles of this compound? molecules a. How many moles of nitrogen dioxide are present in 2.77 x 1022 molecules of this compound? moles b. How many molecules of nitrogen dioxide are present in 1.31 moles of this compound? molecules a. How many molecules of tetraphosphorus decaoxide are present in 2.05 moles...
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?
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...
How many daL of bromine atoms are in 90 x 1022 bromine atoms? (The density of bromine is 3.1 g/cm3)
1. How many ATOMS of carbon are present in 4.23 moles of carbon dioxide ? ____atoms of carbon. 2. How many MOLES of oxygen are present in 3.29×1022 molecules of carbon dioxide ? _____moles of oxygen. 3. How many MOLECULES of carbon tetrabromide are present in 2.73 moles of this compound ? ____molecules. 4. 2. How many MOLES of carbon tetrabromide are present in 9.20×1022 molecules of this compound ? _____moles.
How many grams of bromine atoms are in 4.7 x 1022 molecules of diphosphorus tetrabromide (P2Br4)? Enter your answer with the correct number of sig figs.