Information provided, no addition al tables or notes are allowed.
1 mol = 6.0221 x 1023 ; Speed of light: c = 3.0 x 108 m/s; 1Hz = s-1 C = K-273 Planck's constant: h = 6.626 x 10-34 J s ; 1 atmosphere = 760 torr R = 0.0821 L atm/ mol K = 8.314 kg m2/s2 K mol
0) Name all compounds you see here!
1. A) Density of a compound is 22 kg/cm3. Convert it to g/m3.
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1 B) Density of a compound is 22g/m3. Convert it to kg/cm3
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C) Speed is 200km/h convert it to mm//s
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2. A) What is the number of protons in atom of nitrogen N?
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B) What is the number of electrons in an ion of N?
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C) What is the number of neutrons in an isotope of N?
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3. How many oxygen atoms are in 2g of Ba(ClO4)2
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4. How many moles of Sr(CN)2 are in 1.23 g of this chemical?
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How many grams of Ca( NO3)2 are in 2g of this compound?
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5. The name of these ionic and binary compounds :
is ………………..
N3F is………………..
Al(NO3)3 is……………..
CuCl2 is…………………
CsI……………………..
Ca(ClO4)2
Fe2O3 is………………………………..
CO2 is……………………….
…Name all other compounds you ses……………………………………………………………….
6. Write down the formulae for:
a. Nitrogen oxide………………..
b. Nitrogen dioxide…………………..
c. Trinitrogen tetroxide
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d. ………………………….
7. Determine what mass in g of compound Z forms when y g of Y and x g of X react to produce Z
x X(g) + y Y (g) à z Z (g)
Use your masses and your reactions.
Example : H2 + O2 (balancedà H2 + N2 à balanced
8. Choose the correct net ionic equation for the metathesis reaction which occurs when
a) Ba(NO3)2…………….and ………KOH………(aq) are mixed.
BaCl2 + K2SO4………………………………………….
b) Ca(OH)2 +
c)……Ba(OH)2…+ …………………………………………………………………………………
d) Mg(NO3) 2 + NaOH à
9. Which one of the following compounds is insoluble in water? (use examples from text an dexmas)
10. 500 mL of a X(OH)2 solution was titrated to the equivalence point with 50 mL of a 1.93 M solution of HCl. What was the concentration of the X(OH)2 solution?
…………………………………………….. (see textbook, neutralization, polyprotic –more than 1 H)
500 mL of a H2 SO4 solution was titrated to the equivalence point with 50 mL of a 1.93 M solution of NaOH. What was the concentration of the H2 SO4solution?
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11. What is the molar concentration of Fe3+ in a solution made by diluting 500mL of 2.00 M Fe2O3 to 1.00 L?
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12. Which of the following are strong electrolytes?
HBr HCl HNO3 H3PO4 H2SO4 HF NaOH Ba(OH)2
CH3OH C2H5OH glucose HI HClO4
KCl ………………………………………..
13. What is the energy of a photon which has a frequency of 7.0 x 1015 Hz (cycles/sec)?
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What is the energy of a photon which has a wavelength of 500nm?......
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14. [ ]…………..is the electron configuration of a(n) ______atom. /ion
……………… has electron configuration:..[ ] ………………………..
Use this PT. See textbook for example and practice
15. Quantum rules n, l, m s
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L= 0 s, l=1 p l=2 d..
16. Of the following elements, which has the largest first ionization energy?
……………………….(Use PT , see textbook for trends)
17. Of the following elements, which has the largest radius?
……………………………….(Use PT, trends)
18. The Lewis structure , octet (y/n),formal charges, number of electron domains, molecular electron domains geometry (names), hybridization, lone pairs, bondings (single,..), angles , molecular geometry (names of geometries) , polarity , hydrogen bond , number of resonances (if exist)
For the following molecules: CsBr, ZnS, HI, Ba(OH)2, Na2CO3, H2CO3, CO3 2-, Na2SO4, SO2-, NO3-, HNO3, …SF6, NH3 , PH3 AsH3, As F3, IF3, XeF4, H2O, H2S, NCl3, CH4, CH3Cl, CF4, , BCl3, BF3,BeCl2, BeF2, Cl2, F2, O2, O3, CO2, SO3, XeO2, H3PO4, CO2, NO2-, PCl5,SF4, ClF3, XeF2,SF6, BrF5, XeF4……………………………………..
19. Calculate the number of moles of an ideal gas if it has a pressure of p atm, a volume of V L, and a temperature of T oC.
20. Calculate pressure of an ideal gas if it has n moles , a volume of V L, and a temperature of T oC.
21. Calculate Volume of an ideal gas if it has n moles , a pressure of p atm (or torr), and a temperature of T oC.
Etc………………………………………………………………………..
22. What uis the MM of a molecule density d, at T K, p atm in vol V?? (try simple molecules)
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23. Which of the following molecules would have the lowest rms velocity at T K, p atm in vol V??
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24. What types of intermolecular forces exist between molecules like X and Y ? (use molecules from general list before
a. Dispersion , and ion-dipole
b. dispersion forces, hydrogen bonding,
c. dispersion forces, dipole-dipole,
d. dispersion forces only
25. Shown below is a phase diagram for A system . Use this phase diagram to pick the correct statement from the following multiple choices.
Figure (see textbook phase diagrams)
Identify all important points ( gas/liquid, liquid solid limits, normal points boiling and melting, critical ppoint…..
Identify state of the system at different P and T
26. Which one of the following substances would be the most soluble in X?
27. Which one of the following substances would NOT be soluble in X?
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