General Chemistry: Atoms First
2nd Edition
ISBN: 9780321809261
Author: John E. McMurry, Robert C. Fay
Publisher: Prentice Hall
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Chapter 18.1, Problem 18.1P
Interpretation Introduction
Interpretation:
Density of gaseous
Concept introduction:
Density:
Density is calculated by dividing mass of a species by its volume.
Ideal
Volume of a gas occupied by n moles of gas has a pressure at temperature. It can expressed as,
Where,
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What is the experimental molar mass (that is, calculated from the data given and not taken from the periodic table) of magnesium if 0.0199 grams of magnesium generates 19.21 mL of hydrogen at 20.2 °C with a hydrogen partial pressure of 775.0 torr? Note that the partial pressure of water vapor has already been subtracted from the total pressure.
a
25.4 g/mol
b
24.4 g/mol
c
23.7 g/mol
d
21.8 g/mol
e
25.3 g/mol
A flask contains a mixture of neon (Ne), krypton (Kr), and radon (Rn) gases. Compare (a) the average kinetic energies of the three types of atoms and (b) the root-mean-square speeds. (Hint: Appendix D shows the molar mass (in g>mol) of each element under the chemical symbol for that element.)
A student, following the procedure described to evaluate the Gas Law Constant, collected the following data in an exercise:
mass Mg, g
0.0243
final gas volume, mL
25.0
barometric pressure, torr
754
vapor pressure of H2O at 25 °C
23.76
temperature, K
298
a) The gas collected in the eudiometer is a mixture of hydrogen and water vapor. Calculate the gas law constant.
b) What would be the volume of hydrogen gas produced by the reaction of 0.243 g of magnesium metal and collected at 750 torr (corrected pressure) and 298 K? Use the value of R found in question A.
2. The results of this experiment are greatly affected by the care with which each of the steps is completed.
a) Describe the error that would occur if the magnesium were to slide into the HCl(aq) in the beaker before the eudiometer is sealed off.
b) What would be the effect on the results of a rise in the room temperature from 21.5℃, when determination #1 was done, to 25.8℃, when determination #2 was…
Chapter 18 Solutions
General Chemistry: Atoms First
Ch. 18.1 - Prob. 18.1PCh. 18.1 - Prob. 18.2PCh. 18.2 - Prob. 18.3PCh. 18.3 - Write the chemical formula of a compound that...Ch. 18.4 - Prob. 18.5PCh. 18.4 - Prob. 18.6CPCh. 18.4 - Prob. 18.7PCh. 18.8 - Prob. 18.8CPCh. 18.8 - Prob. 18.9PCh. 18.9 - Prob. 18.10P
Ch. 18.9 - Prob. 18.11PCh. 18.9 - Prob. 18.12CPCh. 18.10 - Prob. 18.13PCh. 18.10 - Prob. 18.14PCh. 18.13 - Prob. 18.15PCh. 18.13 - Prob. 18.16PCh. 18.13 - Prob. 18.17PCh. 18 - Prob. 18.18CPCh. 18 - Look at the location of elements A, B, C, and D in...Ch. 18 - Prob. 18.20CPCh. 18 - Prob. 18.21CPCh. 18 - Prob. 18.22CPCh. 18 - Prob. 18.23CPCh. 18 - Prob. 18.24CPCh. 18 - Prob. 18.25CPCh. 18 - Prob. 18.26CPCh. 18 - Prob. 18.27CPCh. 18 - Prob. 18.28SPCh. 18 - Prob. 18.29SPCh. 18 - Prob. 18.30SPCh. 18 - Prob. 18.31SPCh. 18 - Prob. 18.32SPCh. 18 - Prob. 18.33SPCh. 18 - Prob. 18.34SPCh. 18 - Prob. 18.35SPCh. 18 - Prob. 18.36SPCh. 18 - Prob. 18.37SPCh. 18 - Prob. 18.38SPCh. 18 - Prob. 18.39SPCh. 18 - Prob. 18.40SPCh. 18 - Prob. 18.41SPCh. 18 - Prob. 18.42SPCh. 18 - Prob. 18.43SPCh. 18 - Prob. 18.44SPCh. 18 - Prob. 18.45SPCh. 18 - Prob. 18.46SPCh. 18 - Prob. 18.47SPCh. 18 - Prob. 18.48SPCh. 18 - Prob. 18.49SPCh. 18 - Prob. 18.50SPCh. 18 - Prob. 18.51SPCh. 18 - Prob. 18.52SPCh. 18 - Prob. 18.53SPCh. 18 - Prob. 18.54SPCh. 18 - Prob. 18.55SPCh. 18 - Prob. 18.56SPCh. 18 - Prob. 18.57SPCh. 18 - Prob. 18.58SPCh. 18 - Prob. 18.59SPCh. 18 - Prob. 18.60SPCh. 18 - Prob. 18.61SPCh. 18 - Prob. 18.62SPCh. 18 - Prob. 18.63SPCh. 18 - Prob. 18.64SPCh. 18 - Prob. 18.65SPCh. 18 - Which is more acidic? (a) Cr2O3 or CrO3 (b) N2O5...Ch. 18 - Prob. 18.67SPCh. 18 - Prob. 18.68SPCh. 18 - Write a balanced net ionic equation for the...Ch. 18 - Prob. 18.70SPCh. 18 - Prob. 18.71SPCh. 18 - Prob. 18.72SPCh. 18 - Prob. 18.73SPCh. 18 - What products are formed when the following metals...Ch. 18 - Prob. 18.75SPCh. 18 - Draw MO energy-level diagrams for O2, O2, and O22,...Ch. 18 - Prob. 18.77SPCh. 18 - Prob. 18.78SPCh. 18 - Prob. 18.79SPCh. 18 - Prob. 18.80SPCh. 18 - Prob. 18.81SPCh. 18 - Prob. 18.82SPCh. 18 - Prob. 18.83SPCh. 18 - Prob. 18.84SPCh. 18 - Prob. 18.85SPCh. 18 - Why does boiler scale form when hard water is...Ch. 18 - Prob. 18.87SPCh. 18 - Prob. 18.88SPCh. 18 - Prob. 18.89SPCh. 18 - Prob. 18.90SPCh. 18 - Prob. 18.91SPCh. 18 - Prob. 18.92SPCh. 18 - Prob. 18.93SPCh. 18 - Prob. 18.94CHPCh. 18 - Prob. 18.95CHPCh. 18 - Prob. 18.96CHPCh. 18 - Prob. 18.97CHPCh. 18 - Prob. 18.98CHPCh. 18 - Prob. 18.99CHPCh. 18 - Prob. 18.100CHPCh. 18 - Prob. 18.101CHPCh. 18 - Prob. 18.102CHPCh. 18 - Prob. 18.103CHPCh. 18 - Use the standard heats of formation in Appendix B...Ch. 18 - Prob. 18.105CHPCh. 18 - Prob. 18.106CHPCh. 18 - Prob. 18.107CHPCh. 18 - Prob. 18.108CHPCh. 18 - Prob. 18.109CHPCh. 18 - A boiler with water that contained high...Ch. 18 - Prob. 18.111CHPCh. 18 - Prob. 18.112CHPCh. 18 - Prob. 18.113CHPCh. 18 - Prob. 18.114CHPCh. 18 - Prob. 18.116MPCh. 18 - Prob. 18.117MPCh. 18 - Prob. 18.118MPCh. 18 - Prob. 18.120MPCh. 18 - Prob. 18.121MPCh. 18 - Prob. 18.122MPCh. 18 - Prob. 18.123MP
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