Transcript What is the charge of Zn in the compounds ZnCl2

What is the charge of Zn in the
compounds ZnCl2, Zn(OH)2 and ZnF2
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A
B
C
D
1+
2+
3+
4+
How many significant digits are in the
measurement .002345
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A4
B6
C5
D1
Isotopes of an element differ from each
other by their:
• a. number of protons b.number of neutrons
• c. atomic numbers d. all of the above
What are the products of the following
reaction?
KOH + NaCl
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A Cl2 and NaKOH
B KCl and NaOH
C NaK and HOCl
D H2 and NaCl
What are the products of a combustion
reaction?
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A CO + energy
B CO2 + H2O
C CO2 + H2O + energy
D CO3 + H2
• What is the molar mass of Al(OH)3
A 52.38 g/mol
B 77.98 g/mol
C. 43.98 g/mol
How many grams of aluminum chloride are
produced when 32.0g of Al react with an excess
of HCl? (Hydrogen gas is the other product)
A. 158 g of AlCl3
B. 316 g of AlCl3
C. 76.0 g of AlCl3
• When aluminum metal is placed in copper(II) nitrate, a single
replacement reaction occurs. If the solution is made by dissolving
52.5g of copper(II) nitrate in water, and 2.7g of aluminum is
placed in the solution:
• How many grams of copper metal will be produced?
A. 19 g Cu
B. 9.5 g Cu
C. 18 g Cu
What volume is occupied of 5.6 g of
Cl2 gas at STP?
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A.
B
C
D
1.8 L
.90 L
2.6 L
3.2 L
A solution is made by dissolving 4.0 g of
NaOH in enough water to make a 2.00 L
solution. What is the molarity?
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A
B
C
D
.24 M
.050 M
.012 M
.04 M
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Select the correct electron configuration for
the ion, O2a) 1s21p62s2
b) 1s22s22p5
c) 1s22s22p4
d) 1s22s22p6
• Consider the unbalanced equation: Na(s) +
Cl2(g)  NaCl(s). What mass of NaCl can be
produced from 25.0 g of Cl2 and excess Na?
• A 41.2 g
• B 82.4 g
• C 20.0 g
What is the name of the following
molecule?PCl5
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B
C
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Phosphorous Chloride
tetraChloroPhosphorous
Phosphorous tetrachloride
Phosphorous pentachloride
An ideal gas occupies a certain volume at .964 atm and
27 degrees C. If the pressure is reduced to .765 atm
what will the temperature have to be to keep the
volume constant
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B.
C.
D.
380 K
378 K
200 K
210 K
What intermolecular forces are
present in H2
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A Dipole Dipole
B Ionic
C Dispersion Forces
D.Hydrogen bonding
What is the name of the following
compound? Na2CrO4
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A. Sodium Chloride
B. Sodium Carbonate
C Sodium Chromate
D sodiumdicarbonatetetraoxide
What is the name of the family that
includes Fluorine, Chlorine and
Bromine?
• a. Halogens
• c. Alkali metals
b. Alkaline metals
d. Alkaline earth metals
What is the final temperature of a
system prepared by placing a 100.0 g
sample of hot copper metal originally
at 98.8 C into 100.0 0 g of water at
25.0 degrees C?
• A. 20.1 degrees C
• B 45.1 degrees C
• C 31.2 degrees C
A compound contains .52g of Oxygen
and .67g of Phosphorous. What is the
empirical formula?
• A. P2O3
• B. P2O
• C. P4O8
• D. P2O5
If the molar mass of the compound
is 219.88 g/mol what is the
molecular formula?
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A. P4O
B. P8O4
C P2O
D P4O6
What is the empirical formula of the
compound that contains 3.10 g P and
10.64 g Cl?
• A. PCl3
• B. PCl
• C. P2Cl5
Predict the products and write the
equation for the following:
• Solid Copper reacts with aqueous silver
Nitrate
Draw the lewis dot structure for NH4Cl
Draw the lewis dot structure for H2S
What shape is the molecule?
Is the substance polar or non polar?
What intermolecular forces are present?
Draw the lewis structure and
determine the shape for CO2