5. How many gold atoms are contained in a nanogram? A pictogram?
44. How many atoms of gold are there in a pure gold ring with a mass of 10.6 g?
How many atoms of copper (Cu) are contained in 1.75 moles of copper atoms? How many moles of aluminum ions (Al 3+) are present in 7.25 x 1025 Al 3+ ions? How many moles of aspirin contain 8.62 x 10 28 molecules? How many sugar molecules are contained in 0.475 mole of sugar? What is the molar mass of nicotine (C10H14N2), the toxic and addictive stimulant in tobacco? In this balanced chemical equation, 2 C18H30O2 + 49O2 à 36 CO2...
The density of gold (Au) is 19.32 g/mL. How many atoms are in a gold bar whose volume is 150 mL?
How many moles of atoms are contained in 14.6 g of Br2?
How many atoms are contained in each of the following? 6.7 g CO2 ?
How many moles of oxygen atoms are contained in 1.25 mol of H3PO4?
Calculate how many atoms of gold (Au) are present in 0.196 mol of Au ?
How many chlorine atoms are contained in a sample of chlorine that has a mass of 779.90 amu?
How many hydrogen atoms are contained in 10 moles of (C5H5)2 ZrCl2?
How many atoms of carbon are contained in 0.203 mol of Al2(CO3)3?