1.
Consider oxalic acid, H2C2O4.The reaction of oxalic acid with magnesium metal produces hydrogen gas and magnesium oxalate. What type of reaction is this (called reaction 1 - write this equation for later questions)? [acid/base, precipitation or redox]
2.
The reaction of oxalic acid with calcium chloride produces calcium
oxalate and hydrogen chloride. What type of reaction is this(called reaction 2 - write this equation for later questions)? [acid/base,
precipitation or redox]
3.
The reaction of oxalic acid with potassium hydroxide produces potassium
oxalate and water. What type of reaction is this(called reaction 3 -write this equation for later questions)? [acid/base,
precipitation or redox]
4.
In the balanced equation of reaction 1, what is the coefficient of hydrogen gas?
5.
In the balanced equation of reaction 2, what is the coefficient of calcium chloride?
6.
In the balanced equation of reaction 3, what is the coefficient of potassium hydroxide?
7.
136C is an isotope of carbon. What will be the element produced when it undergoes beta decay?
8.
136C is an isotope of carbon. What will be the element produced when it undergoes electron capture?
9.
136C is an isotope of carbon. What will be the element produced when it undergoes positron emission?
10.
How many moles (in 3 significant figures) are there in 10.0 grams of magnesium? [AW, Mg = 24.3 g/mol]
11.
How many molecules (in ___ x 1023, 3 significant figures) are there in 10.0 grams of magnesium? [AW, Mg = 24.3 g/mol]
12.
In the reaction (oxalic acid + magnesium), how many grams (3 significant figures) of oxalic acid will exactly react with 10.0 g magnesium? [atomic weights: Mg = 24.3 g/mol, H = 1 g/mol, C = 12 g/mol, O = 16 g/mol]
13.
If 10.0 grams magnesium reacts with excess oxalic acid, how many grams (3 significant figures) of magnesium oxalate will be produced? [atomic weights: Mg = 24.3 g/mol, H = 1
g/mol, C = 12 g/mol, O = 16 g/mol]
14.
If 10.0 grams magnesium reacts with 10.0 g oxalic acid, how many grams(3 significant figures)
of hydrogen gas will be produced? [atomic weights: Mg = 24.3 g/mol, H = 1
g/mol, C = 12 g/mol, O = 16 g/mol]
15.
What is the mass percent (3 significant figures)of C in oxalic acid? [atomic weights:H = 1 g/mol, C = 12 g/mol, O = 16 g/mol]