How many atoms are in 0.521 g of (NH4)2Cr2O7?
218 g of (NH4)2CO3 is present. how many oxygen atoms are present? how many hydrogen atoms are present? how many total atoms are present?
How many moles of nitrogen atoms and hydrogen atoms are present in 1.4 moles of (NH4)3PO4?
How many grams of the first reactant in each of the following chemical equations would be needed to produce 24.0 g of N2 gas? (a) 4NH3 + 3O2 → 2N2 + 6H2O g of NH3 (b) (NH4)2Cr2O7 → N2 + 4H2O + Cr2O3 g of (NH4)2Cr2O7 (c) N2H4 + 2H2O2 → N2 + 4H2O g of N2H4 (d) 2NH3 → N2 + 3H2 g of NH3
How many atoms of each element are present in 3 formula units of (NH4)2HASO4? 5 N atoms, 45 H atoms, 4 As atoms, 18 O atoms 6 N atoms, 27 H atoms, 3 As atoms. 12 O atoms 10 N atoms, 18 H atoms, 5 As atoms. 18 O atoms 6 N atoms, 9 H atoms, 3 As atoms. 12 O atoms
How many moles of hydrogen atoms are in 6.50 moles of (NH4) P04 2.17 moles 19.5 moles 0.542 moles 26.0 moles 78.0 moles 1.63 moles
Question 27 How many moles of hydrogen atoms are in 6.50 moles of (NH4), PO4? O 1.63 moles O 0.542 moles 0 78.0 moles O 2.17 moles O 19.5 moles 0 26.0 moles
How many grams of the first reactant in each of the following chemical equations would be needed to produce 10.8 g of N, gas? (a) 4NH3 + 30, 2N2 + 6H,0 g of NH3 (6) (NH4)2Cr20, – N2 + 4H,0 + Cr203 g of (NH4)2Cr2O7 (c) N,H4 + 2H02N2 + 4H20 g of N2H4 (d) 2NH3 – N2 + 3H2 g of NH3
14. How many sodium atoms are in 0.1310 g of sodium 14. How many sodium atoms are in 0.1310 g of sodium?
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...
a) How many atoms are in 92.2 g of pure aluminum? b) How many grams of carbon, C, would contain the same number of atoms as 39.948 g of argon, Ar? c) How many grams of S are in 785 g of SO2?