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How many protons and electrons are in the Stannous (Sn2+) ion)?
Sn2+: 50p+, 48e-
What is the mass in grams of 1.00 mole of F2?
3.80 x 101 g F2
The mass of the dry, empty pycnometer: 0.2210 g. The mass of the pycnometer completely filled with distilled water: 0.3475 g. Assume the density of distilled water is 1.000 g/ml.
Calculate the volume of the pycnometer.
1.265 x 10-1 ml
How many grams of Oxygen are present in a sample of water (H2O) that contains 3.14 × 1021 hydrogen atoms?
4.17 x 10-2 g O
How many F2 molecules are contained in 1.00 mole of F2?
6.02 x 1023 molec F2
The mass of the dry, empty pycnometer: 0.2210 g. The mass of the pycnometer completely filled with distilled water: 0.3475 g. The mass of the pycnometer completely filled with an unknown liquid: 0.3123 g. Assume the density of distilled water is 1.000 g/ml.
Calculate the density of the unknown liquid.
7.22 x 10-1 g/ml
Determine the number of protons, electrons, and neutrons in the Uranium-232 (U-232) isotope.
U-232: 92p+, 92e-, 140n
How many F atoms are contained in 1.00 mole of F2?
1.20 x 1024 F atoms
A compound with the empirical formula CH2 has a molecular weight of 112 grams per mole. Determine the molecular formula of the compound.
C8H16
What is the percentage (by mass) of O in AgNO3?
28.2% O
How many moles of Hydrogen (H) are contained in 72.5 grams of C6H12O6
4.83 mol H
Calculate the number of molecules contained in 1.25 grams of Mg3N2?
7.46 x 1021 molec
Convert 1.250 moles of Gold (Au) atoms to a) atoms of Au, and b) grams of Au.
a) 7.528 x 1023 Au atoms
b) 2.463 x 102 g Au
How many grams of Phosphorous are contained in 15.0 grams of Ca3(PO4)2?
3.00g (P)
Ascorbic acid (vitamin C) cures scurvy and may help prevent the common cold. It is composed of 40.92 %C, 4.58 %H, and 54.50 %O by mass. Determine the empirical formula of ascorbic acid.
C3H4O3