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15 Cards in this Set
- Front
- Back
- 3rd side (hint)
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A 500.mL saturated solution of MgCO3 (M=84) is reduced to 120 ml by evaporation. What is the mass of solid MgCO3 is formed? [k=7.2*10^-4] |
0.20g |
Find out how much is in 500 ml |
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What is the pH of a solution made by mixing 200. ml of 0.0657 M NaOH, 140. ml of 0.170 M HCL, and 160. ml of H2O? |
2.43whixh |
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Which substance has a non-zero standard free energy of formation? |
O3 (g) |
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The first order disappearance of a substance has a half-life of 34.0s. How long does it take for the concentration of that substance to fall to 12.5% of its initial value? |
102s |
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A gas diffuses one-third as fast as O2 at 100c. This has could be? |
C5F12 (M=288) |
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Which process is exothermic? a) condensation b) vaporization c) sublimation d) fusion |
Condensation |
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Which family of elements has solid, liquid, and gaseous members at 25c and 1 atm pressure? a) pnictogens (N-Bi) b) chalcogens (O-Te) c) alkali metals (Li-Cs) d) halogens (F-I) |
Halogens |
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A 2.00 L balloon at 20.0c and 745mmHg Floats to an altitude where the temperature is 10.0c and the air pressure is 700 mmHg. What is the New volume of the balloon? |
2.06 L |
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What is the value of the quantum number l for a 5p orbital? |
1 |
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What is the value of the quantum number l for a 5p orbital? |
1 |
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What is the oxidation number of C in formaldehyde, CH2O? |
0 |
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How is the enthralling of vaporization of a substance related to its enthalpy of fusion? |
The enthalpy of vaporization is greater than the enthalpy of fusion. |
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What is the bond order for NO? |
2.5 |
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Hydrogenation of an Allene converts it to an.. |
Alkane |
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Which class of organic compounds does NOT contain oxygen? A) Amide B) Ketone C) Alcohol D) Amine |
Amine |
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