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60 questions
Why is the mole used to measure the atom?
Atoms are extremely tiny particles, and their size varies from element to element
Atoms are all the same size for every element
Some atoms cannot be counted using the mole
When do I use a mole ratio?
I never have to use a mole ratio
When I am given information about one substance and asked about another, new substance
When I am only using one hand for the trick that Mrs. Mack showed us.
Intermolecular forces for: CO2
Dispersion Force
Dipole dipole
Hydrogen bonding
This picture most likely depicts the arrangement of atoms in a
diamond
salt
metal
gas
Which substance has the weakest intermolecular forces?
Substance A, boiling point of 75 °C
Substance B, boiling point of 105 °C
Substance C, boiling point of 25 °C
Substance d, boiling point of 45 °C
Which of the following has two bonding pairs and two unshared pairs of electrons around the central atom?
CH4
H2O
NH3
HF
2NaClO3 (s) → 2NaCl (s) + 3O2 (g)
12.00 moles of NaClO3 will produce how many grams of O2?
NaClO3 = 106.44 g/mol ; O2 = 32.00 g/mol
256 g of O2
576 g of O2
288 g of O2
384 g of O2
Cl2 + 2KBr → Br2 + 2KCl
How many grams of potassium chloride (KCl) can be produced from 356 g of potassium bromide (KBr)?
KCl = 74.55 g/mol ; KBr = 119.00 g/mol
749 g
223 g
479 g
814 g
From the reaction: B2H6 + 3O2 -->2 HBO2 + 2 H2O
What mass of O2 will be needed to burn 36.1 g of B2H6?
B2H6 = 27.68 g/mol
13.8 g O2
3.91 mol of O2
125 g O2
41.7 g O2
What amount of oxygen, O2, (in moles) contains 1.8×1022 molecules?
0.0030
0.030
0.30
3.0
Which of the following contains the greatest number of molecules?
1 g of CH3Cl
1 g of CH2Cl2
1 g of CHCl3
1 g of CCl4
C2H2 undergoes combustion to produce carbon dioxide and water vapor. If 75 L CO2 is produced, how many liters of O2 are required?
37.5 L
3.75 L
93.8 L
9.38 L
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