Ch 1/2/3
Ch 4/5/6
Ch 7
Ch 8
Ch 9
100
Is boiling water a physical or chemical change?
physical change
100
Put the following elements in order of increasing atomic radius: Al, Sr, O Mg
O < Al < Mg < Sr
100
Write the chemical formula for iron (II) nitrate
Fe(NO3)2
100
Balance the following equation:
AgNO3 + Na2CO3 --> NaNO3 + Ag2CO3
2AgNO3 + Na2CO3 --> 2NaNO3 + Ag2CO3
100
How many moles of HF are needed to react with 0.300 moles Na2SiO3?
Na2SiO3 + 8HF --> H2SiF6 + 2NaF + 3H2O
2.40 mol HF
200
What is the group number and period number for Cr?
Group 6, Period 4
200
Write the standard electron configuration for Si
1s22s22p63s23p2
200
Name the following compound: H2CO3
carbonic acid
200
What type of reaction is this:
2Al(s) + 3FeCl2(aq) --> 3Fe(s) + 2AlCl3(aq)
Single replacement
200
Using the following unbalanced equation, calculate the number of grams of HCl that can react with 0.500 grams of Al(OH)3
Al(OH)3 + HCl --> AlCl3 + H2O
0.701 grams HCl
300
What type of matter is a sugar water solution?
Homogeneous mixture
300
Draw a Lewis structure for AsH3
300
Calculate the percent composition of dinitrogen tetroxide
30.45% N, 69.55% O
300
Balance the following equation:
C3H6 + O2 --> CO2 + H2O
2C3H6 + 9O2 --> 6CO2 + 6H2O
300
Which is the limiting reactant when 1.85 mol NaOH and 1.00 mol CO2 are allowed to react?
2NaOH + CO2 --> Na2CO3 + H2O
NaOH is the limiting reactant
400
The known density of a metal is 2.70 g/cm3 . A student determines the density in multiple trials. The student's density values are 3.40, 3.42, and 3.41 g/cm3. Is the student accurate, precise, both or neither?
Precise only
400
Draw a Lewis structure for ICl41-
400
Determine the empirical formula for a compound that is 40.92% C, 4.58% H and 54.50% O
C3H4O3
400
Indicate the type of reaction, predict the products, and balance the equation:
NaN3(s) --> ??
Decomposition
2NaN3(s) --> 2Na(s)+ 3N2(g)
400
If 1.00 gram of NaHCO3 and 1.00 g of H3C6H5O7 are allowed to react, how many grams of CO2 form?
3NaHCO3 + H3C6H5O7 --> 3CO2 + 3H2O + Na3C6H5O7
0.524 g CO2 (NaHCO3 limiting reactant)
500
Calculate the average atomic mass and identify the element with the following isotopes:
Isotope 1: 6.015 amu, 7.59% abundance
Isotopes 2: 7.016 amu, 92.41% abundance
6.940 amu, Lithium
500
Draw the orbital diagram for Ag
500
A compound is 38.7% C, 9.7% H, and 51.6% O by mass. The molar mass of the compound is 62.1 g/mol. What is the empirical formula and the molecular formula of the compound?
empirical: CH3O
molecular:C2H6O2
500
Indicate the type of reaction, predict the products, and balance the equation:
BaCl2(aq) + K2SO4(aq) -->
Double replacement
BaCl2(aq) + K2SO4(aq) -->BaSO4(s) + 2KCl(aq)
500
If you start with 38.0 g H2S and 50.0 g O2, how many grams of S8 would actually form assuming the reaction proceeds with 98% yield?
8H2S + 4O2 --> S8 + 8H2O
35.0 g S8