Question
In: Chemistry
Determine the number of moles in 4.21 x 10^23 molecules of CaCl2
Determine the number of moles in 4.21 x 10^23 molecules of CaCl2
Solutions
Dr. OWL answered 3 years agoRelated Solutions
Determine the number of moles of the compound and determine the number of moles of each...
Determine the number of moles of the compound and determine the
number of moles of each type of atom in
each of the following:
(a) 2.12 g of potassium bromide, KBr
(b) 0.1488 g of phosphoric acid, H3PO4
(c) 23 kg of calcium carbonate, CaCO3
(d) 78.452 g of aluminum sulfate, Al2(SO4)3
(e) 0.1250 mg of caffeine, C8H10N4O2
Determine the formula weight, number of molecule and number of moles 1). 1.7293 x10^16 Molecules of...
Determine the formula weight, number of molecule and number of
moles
1). 1.7293 x10^16 Molecules of H2O
2). 5.699 g of BaSO4
1) Determine the number of moles of Br2 in a sample consisting of: 8.02×1022 Br2 molecules...
1) Determine the number of moles of Br2 in a sample consisting
of:
8.02×1022 Br2 molecules
2.23×1024 Br atoms
11.0 kg bromine
Determine the mass percent H in the hydrocarbon isopentane,
CH3CH(CH3)CH2CH3?
Determine the empirical formula of:
benzo[a]pyrene, a suspected carcinogen found in
cigarette smoke, consisting of 95.21% C and 4.79% H, by mass
hexachlorophene, used in germicidal soaps, which consists of
38.37% C, 1.49% H, 52.28% Cl, and 7.86% O by mass.
The element X forms the compound XOCl2containing...
14. Boltzman's constant is equal to 1.38 x 10-23 J/ K. Hydrogen gas molecules have a...
14. Boltzman's constant is equal to 1.38 x 10-23 J/ K.
Hydrogen gas molecules have a mass of 3.35 x 10-27 kg. At 1000 K,
what would be the rms speed of these H2 molecules?
a. less than 1 m/s
b. 3.5 x 103 m/s
c. 1.2 x 107 m/s
d. more than 109 m/s
e. none of these
8.03 x 10^23 moleucles of oxygen react with excess nitrogen. what is the maximum number of...
8.03 x 10^23 moleucles of oxygen react with excess nitrogen.
what is the maximum number of grams of dinitrogen tetroxide that
can be produced?
42 grams of cyclohexane burns in excess air to form carbon
dioxide and water. How many grams of carbon dioxide and of water
vapor are produced?
Of each of these equations, determine the change in the number of moles (change in n...
Of each of these equations, determine the change in the number of
moles (change in n gas)
(a) (NH4)2CO3(s) yields 2NH3 (g) + CO2 (g) + H2O (g) ___________
mol
(b) H2 (g) + Cl2 (g) yields @HCl (g) ___________ mol
(c) 2H2 (g) + O2 (g) yields 2H2O (l) ___________ mol
(d) 2Na (s) + Cl2 (g) yields 2NaCl (s) ___________ mol
This lab will require you to determine the number of moles of carbon dioxide in a...
This lab will require you to determine the number of moles of
carbon dioxide in a flask. This will require you to know the volume
of the flask, the temperature of the gas inside it, and the
pressure of the gas. Give a one-to two sentence explanation of how
each of these things will be determined.
(a) Assume for the moment that air consist of 80.00% nitrogen
and 20.00% oxygen by volume. Use these figures and typical values
for temperature...
2 .Determine moles and number of molecues. Calculate the following quantites. A. The mass of hydrogen...
2 .Determine moles and number of molecues. Calculate the
following quantites.
A. The mass of hydrogen atoms in grams in .405 moles of sucrose
C12H22O12
B. The moles in 196.5g of Zn(NO3)2
C. What is the mass in grams of 6.12 x 10^20 molecules of
caffeine C8H10N4O2?
D. What is the molar mass of cholesterol if 0.00105 mol has a
mass of 0.406g?
E. How many potassium atoms are in 28.6 grams of potassium
nitirde, K3N?
F. How many grams...
Determine the partial pressure and number of moles of each gas in a 14.25-L vessel at...
Determine the partial pressure and number of moles of each gas
in a 14.25-L vessel at 30 degrees C containing a mixture of Xenon
and neon gases only. The total pressure in the vessel is 6.70 atm
and the mole fraction of xenon is 0.721 What is the partial
pressure of Xenon? What is the partial pressure of neon? What is
the number of moles of Xenon? What is the number of moles of
neon?
A. Determine the quantity (g) of pure CaCl2 in 4.2 g of CaCl2•9H2O. Show your work....
A. Determine the quantity (g) of pure CaCl2 in 4.2 g of
CaCl2•9H2O. Show your work.
B. Determine the quantity (g) of pure MgSO4 in 1.6 g of
MgSO4•7H2O. Show your work.
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