NO NEED TO SHOW WORK. 1. Looking at this reaction @ STP: 4 Na (s) + O2 (g) = 2 Na2O (s) if you use up 11 liters of O2, how many grams of Na2O are made? A. 15 grams B. 61 grams C. 31 grams D. 122 grams E. None of the above
Ideal and Real Gases
Ideal gases obey conditions of the general gas laws under all states of pressure and temperature. Ideal gases are also named perfect gases. The attributes of ideal gases are as follows,
Gas Laws
Gas laws describe the ways in which volume, temperature, pressure, and other conditions correlate when matter is in a gaseous state. The very first observations about the physical properties of gases was made by Robert Boyle in 1662. Later discoveries were made by Charles, Gay-Lussac, Avogadro, and others. Eventually, these observations were combined to produce the ideal gas law.
Gaseous State
It is well known that matter exists in different forms in our surroundings. There are five known states of matter, such as solids, gases, liquids, plasma and Bose-Einstein condensate. The last two are known newly in the recent days. Thus, the detailed forms of matter studied are solids, gases and liquids. The best example of a substance that is present in different states is water. It is solid ice, gaseous vapor or steam and liquid water depending on the temperature and pressure conditions. This is due to the difference in the intermolecular forces and distances. The occurrence of three different phases is due to the difference in the two major forces, the force which tends to tightly hold molecules i.e., forces of attraction and the disruptive forces obtained from the thermal energy of molecules.
NO NEED TO SHOW WORK.
1. Looking at this reaction @ STP: 4 Na (s) + O2 (g) = 2 Na2O (s) if you use up 11 liters of O2, how many grams of Na2O are made?
A. 15 grams
B. 61 grams
C. 31 grams
D. 122 grams
E. None of the above
2. Which of these compounds has the strongest intermolecular forces?
A. NO
B. KCl
C. CO2
D. HF
E. None of the above
3. About how many moles is 3.9 x 1024 atoms of Al?
A. 3.90 moles
B. 39.0 moles
C. 6.50 moles
D. 65.0 moles
E. None of the above
4. About how many liters (@STP) does 1269 grams of I2 occupy?
A. 2240 liters
B. 224 liters
C. 1120 liters
D. 112 liters
E. None of the above
5. Looking at this reaction @ STP: 4 K (s) + O2 (g) = 2 K2O (s) if you burn 3.00 moles of K, how many moles of O2 are used up?
A. 1.50 moles
B. 0.50 moles
C. 0.75 moles
D. 1.00 moles
E. None of the above
6. Looking at this reaction @ STP: 2 H2 (g) + O2 (g) = 2 H2O (g) if you use 2.8 liters of H2, how many liters of O2 are needed?
A. 4.2 grams
B. 1.4 liters
C. 2.8 liters
D. 7.0 liters
E. None of the above
7. Which of these compounds has the lowest vapor pressure?
A. HOH
B. O2
C. CO2
D. H2
E. None of the above
8. About how many moles is 112 grams of CaO?
A. 2.0 moles
B. 0.1 moles
C. 0.2 moles
D. 1.1 moles
E. None of the above
9. How many grams does a molecule of CO2 weigh?
A. 4.65 x 10-23 grams
B. 7.31 x 10-24 grams
C. 4.65 x 10-24 grams
D. 7.31 x 10-23 grams
E. None of the above
10. Looking at this reaction @ STP: 4 Fe (s) + 3 O2 (g) = 2 Fe2O3 (s) if you heat 1.50 moles of Fe, how many moles of Fe2O3 are made?
A. 1.50 moles
B. 2.25 moles
C. 0.75 moles
D. 3.00 moles
E. None of the above
Trending now
This is a popular solution!
Step by step
Solved in 6 steps
