1. How many grams of
O are present in 3.65 grams of
dioxygen difluoride ?
------ grams O.
2. How many grams of
dioxygen difluoride contain 4.01
grams of F ?
------- grams dioxygen difluoride.
3. How many grams of
Co3+ are present in
1.13 grams of cobalt(III)
bromide?
----- grams Co3+
4. How many grams
of cobalt(III) bromide contain
2.36 grams of
Co3+?
------- grams cobalt(III) bromide.
1. Mole = mass/molar mass
= 3.65/70=> 0.052 mol
Mass of oxygen = 2×0.052×16=> 1.67 g
2. Mole of F = 4.01/19 => 0.211 mol
Mass of dioxygen difluoride = 0.211×70/2
=> 7.39 g
3. Moles = 1.13/299 => 0.00378 mol
Mass of Co3+ = 0.000378×59 => 0.223 g
4. Mole = 2.36/59 => 0.04 mol
Mass of cobalt (lll) bromide = 0.04×299 => 11.96 g
1. How many grams of O are present in 3.65 grams of dioxygen difluoride ? ------...
1. How many grams of Pb2+ are present in 2.54 grams of lead(II) bromide? grams Pb2+ 2. How many grams of lead(II) bromide contain 1.26 grams of Pb2+? grams lead(II) bromide. 1. How many grams of Cu2+ are present in 3.92 grams of copper(II) iodide? grams Cu2+ 2. How many grams of copper(II) iodide contain 1.28 grams of Cu2+? grams copper(II) iodide.
7) How many moles are in 125 grams of oxygen difluoride, OF2? (O = 16.00 g/mol, F = 19.00 g/mol) Group of answer choices 54.0 2.31 0.43 67.5 8) Which of the following contains the same number of moles of atoms as 6.00 grams of carbon? Group of answer choices: 12.00 g of Si 12.15 g of Mg 6.00 g of Si 8.00 g of He 9) Which sample would contain the largest number of atoms? (C = 12.01 g/mol,...
1. What is the mass of 1.55x1024 atoms of calcium? grams 2. How many calcium atoms are there in 33.4 grams of calcium? atoms 1. How many MOLECULES of nitrogen dioxide are present in 1.57 grams of this compound? molecules. 2. How many GRAMS of nitrogen dioxide are present in 2.77x1022 molecules of this compound? grams. 1. How many GRAMS of chromium(III) bromide are present in 2.83x1022 formula units of this compound? grams 2. How many formula units of chromium(III)...
1. How many grams of N are present in 1.73 grams of nitrogen dioxide ? grams N. 2. How many grams of nitrogen dioxide contain 2.56 grams of O?! grams nitrogen dioxide. Subm Answer Retry Entire Group 7 more group attempts remaining
1. How many grams of B are present in 4.04 grams of boron tribromide ? grams B. 2. How many grams of boron tribromide contain 4.80 grams of Br ? grams boron tribromide.
1) How many grams of Na are there in a sample of Na that contains 9.68×1023atoms? 2) How many GRAMS of potassium bromide are present in 1.85 moles of this compound ? 3) . How many MOLES of potassium bromide are present in 3.00 grams of this compound ? 4) How many GRAMS of silicon are present in 3.73 moles of silicon dioxide ? 5) How many MOLES of oxygen are present in 4.59 grams of silicon dioxide ?
1. How many grams of Fe2+ are present in 4.90 grams of iron(II) acetate? grams Fe2+ 2. How many grams of iron(II) acetate contain 3.35 grams of Fet? grams iron(II) acetate.
1. How many grams of Fe2+ are present in 1.67 grams of iron(II) sulfide? grams Fe2+ 2. How many grams of iron(II) sulfide contain 4.43 grams of Fe2+? grams iron(II) sulfide.
1. How many grams of O are there in a sample of O that contains the same number of moles as a 55.4 gram sample of Kr? 2. How many MOLECULES of nitrogen dioxide are present in 3.28 grams of this compound 3. . How many GRAMS of nitrogen dioxide are present in 7.63×1022 molecules of this compound
LILULUI 1. How many grams of Na" are present in 1.63 grams of sodium sulfide? grams Na 2. How many grams of sodium sulfide contain 1.62 grams of Na? grams sodium sulfide. Subm Answer Retry Entire Group 7 more group attempts remaining