0-14; a measure of how acidic or basic a substance is
100
An Acid + a Base = a Salt and Water.
HCl + NaOH= NaCl + H2O
What type of reaction is this?
A. a Double Replacement AB + CD = AD + BC
B. a Single Replacement A + B = AB
C. None of the Above?
What is
A. a Double Replacement AB + CD = AD + BC
100
Which compound has the smallest molar mass?
a. CO c. H2O
b. CO2 d. H2O2
c. H2O
100
24. Calculate the molar mass of NO2.
a. 46.01 g/mol
b. 55.21 g/mol
c. 14.01 g/mol
d. 30.01 g/mol
d. 30.01 g/mol
200
What is the pH of a solution with the highest acidity? 11, 7, 5, 1
1
200
Which equation represents a neutralization reaction?
a. 4Fe (s) + 3O2 (g) 2Fe2O3 (s)
b. 2H2 (g) + O2 (g) 2H2O (l)
c. HNO3 (aq) + KOH (aq) KNO3 (aq) + H2O (l)
d. AgNO3 (aq) + KCl (aq) KNO3 (aq) + AgCl (s)
c. HNO3 (aq) + KOH (aq) KNO3 (aq) + H2O (l)
200
How many moles of CH4 are contained in 192.0 grams of CH4?
a. 3.00 moles c. 12.0 moles
b. 6.00 moles d. 16.0 moles
c. 12.0 moles
200
25. Calculate how many grams of CO2 are in 3.2 moles of CO2.
a. 182.83 g CO2
b. 140.83 g CO2
c. 102.21 g CO2
d. 44.01 g CO2
b. 140.83 g CO2
300
According to the pH scale, which pH solution has the highest concentration of OH- ions? ph 4, pH 6, pH 8, pH11
pH 11
300
When cations (+) and anions (-) join, they form what kind of chemical bond?
a. ionic c. metallic
b. hydrogen d. covalent
a. ionic
300
How many molecules are in 25 g of AlPO4?
a. 1.23 x 10^23 molecules b. 0.03 x 10^23 molecules
c. 506 molecules d. 16.0 molecules
a. 1.23 x 10^23 molecules
300
26. Calculate how many moles of H2 are in 4.54 g of H2.
a. 9.12 moles H2
b. 0.54 moles H2
c. 6.16 moles H2
d. 2.27 moles H2
d. 2.27 moles H2
400
What is the pH of a solution if the pOH is 3?
pH +pOH = 14
pH + 3 = 14
- 3 = -3
pH = 11
400
HF + NaOH ______ + ______
Predict the products of the above reaction:
a. NaF + HO
b. Na + F + H2O
c. NaF + H2O
d. Na2 + H2O
c. NaF + H2O
400
Bicarbonate of soda (sodium hydrogen carbonate) is used in many commercial preparations. Its formula is NaHCO3. Of the following percent compositions, which one would have to represent Na?
a. 27.36%
b. 1.20%
c. 14.30%
d. 57.14 %
a. 27.36%
400
27. Which of the following numbers would balance the following equation?
___ C7H8(g) + ___ O2(g) ___ CO2(g) + ___ H2O(l)
a. 1, 9, 7, 4
b. 2, 9, 4, 8
c. 2, 10, 14, 8
d. 1, 5, 7, 4
a. 1, 9, 7, 4
500
According to the pH scale, which of the following represents the most basic substance?
a. Battery Acid
b. Oven Cleaner
c. Hair Remover
d. Milk
b. Oven Cleaner
500
_____ + _____ KCl + H2O
Predict the reactants of the above equation:
a. HCl + KO
b. HCl + OH
c. HCl + KOH
d. HK + ClOH
c. HCl + KOH
500
What is the % composition of oxygen in H2O?
a. 89%
b. 13%
c. 11%
d. 9%
a. 89%
500
What law must hold true for a nuclear chemical reaction?
a. The Law of Definite Proportions
b. The Law of Conservation of Time
c. The Law of Conservation of Mass
d. The Law of Conservation of Atoms