1. How many MOLECULES of
phosphorus pentachloride are present in
3.40 moles of this compound?
2. How many MOLES of
phosphorus pentachloride are present in
7.67×1022 molecules of this
compound?
1)
use:
number of molecules = number of mol * Avogadro’s number
number of molecules = 3.4 * 6.022*10^23 molecules
number of molecules = 2.047*10^24 molecules
Answer: 2.05*10^24 molecules
2)
use:
number of mol = number of molecules / Avogadro’s number
number of mol = 7.67*10^22 / 6.022*10^23 mol
number of mol = 0.1274 mol
Answer: 0.127 mol
1. How many MOLECULES of phosphorus pentachloride are present in 3.40 moles of this compound? ...
1. How many MOLECULES of boron tribromide are present in 4.37 moles of this compound ? molecules. 2. How many MOLES of boron tribromide are present in 6.07×1022 molecules of this compound ? moles. 1. How many ATOMS of nitrogen are present in 1.22 moles of nitrogen trifluoride ? atoms of nitrogen. 2. How many MOLES of fluorine are present in 1.64×1022 molecules of nitrogen trifluoride ? moles of fluorine.
1) How many MOLECULES of boron trichloride are present in 4.14 moles of this compound ? 2) How many MOLES of boron trichloride are present in 1.34×1022 molecules of this compound ? 3) How many ATOMS of sulfur are present in 3.55 moles of sulfur dichloride ? 4) How many MOLES of chlorine are present in 3.07×1022 molecules of sulfur dichloride ?
1. How many MOLECULES of carbon tetrabromide are present in 2.48 moles of this compound? molecules. 2. How many MOLES of carbon tetrabromide are present in 9.85*1022 molecules of this compound? moles.
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...
1. How many ATOMS of phosphorus, are present in 4.10 moles of tetraphosphorus decaoxide, P4O10? __________ atoms of phosphorus 2. How many MOLES of oxygen are present in 1.75×1021 molecules of tetraphosphorus decaoxide? ___________ moles of oxygen 3. How many ATOMS of phosphorus are present in 7.95 grams of tetraphosphorus decaoxide, P4O10? ________atoms of phosphorus 4.How many GRAMS of oxygen are present in 1.75×1021 molecules of tetraphosphorus decaoxide? _________grams of oxygen
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.
A. How many molecules are present in a sample of this compound that contains 2.98 moles of 2-methyl-1-butanol? B. How many moles of 2-methyl-1-butanol are present in a sample of this compound that contains 7.15x10^22 carbon atoms? C. How many carbon atoms are present in 1.48 moles of this compound (pentanal)? D. How many moles of pentanal are present in 1.82x10^22 molecules of this compound?
how many molecules of tetraphosphorus decaoxide are present in 4.31 moles of this compound ? and how many moles of tetraphosphorus decaoxide are present in 1.07x10^22 molecules of this compound ?
1. How many MOLECULES of boron trichloride are present in 8.03 grams of this compound ? 2. How many GRAMS of boron trichloride are present in 1.34×1022 molecules of this compound ? 3) How many ATOMS of sulfur are present in 6.70 grams of sulfur dichloride ? 4) How many GRAMS of chlorine are present in 3.07×1022molecules of sulfur dichloride ?
a. How many molecules of tetraphosphorus decaoxide are present in 2.96 moles of this compound? 1783x10^23 molecules b. How many moles of tetraphosphorus decaoxide are present in 4.03 x 10" molecules of this compound? moles