Vocabulary
A conversion factor that relates the amounts in moles of any two substances involved in a chemical reaction.
What is mole ratio?
CO2 + 2LiOH --> Li2CO3 + H2O How many moles of lithium hydroxide are required to react with 20 mol of CO2?
What is 40 mol LiOH?
Mg + 2HCl --> MgCl2 + H2
How many grams of hydrogen will be produced if we start with 2 moles of hydrochloric acid?
What is 2 g H2?
Mg + 2HCl --> MgCl2 + H2
What mass of hydrogen is produced from the reaction of 75 g HCl (MM=36.5 g/mol) and excess Mg?
What is 2.0 g H2?
Zn + 2HCl → ZnCl2 + H2
In this reaction, this would be the ratio of HCl to H2
What is 2:1?
This Reaction has water and an ionic compound (salt) as products of the reaction.
What is an acid-base reaction?
6CO2 +6H2O --> C6H12O6 + 6O2 How many moles of carbon dioxide are needed to react with 3.25 mol of water in the reaction described above?
What is 3.25 mol CO2?
Mg + 2HCl --> MgCl2 + H2
What mass of hydrochloric acid (MM=36.5 g/mol) is needed to react with 2.50 moles of magnesium?
What is 182 g HCl?
2KClO3 --> 2KCl + 3O2 How many grams of KCl are produced if 5.0 g of KClO3 is decomposed?
What is 3 g KCl?
The number of atoms or molecules in one mole of a substance
What is Avogadro's Number?
2Mg +O2 --> 2MgO How many moles of magnesium oxide are produced from 1.2 moles of magnesium?
What is 1.2 mol MgO?
How many moles of aluminum atoms are needed to combine with 1.58 mol of oxygen molecules to make aluminum oxide?
HINT (write the Balanced Equation First)
What is 1.05 mol Al?
Sodium and chlorine react to produce sodium chloride (table salt; MM=58.5 g/mol). Determine the amount of product that can be produced from 24.7 g of sodium and excess chlorine.
What is 62 g NaCl?
How many moles are present in 34 grams of Cu(OH)2?
What is 0.35 mol Cu(OH)2?
The physical property of a substance is the total weight of that substance (gram) for one mole of that substance.
What is Molar Mass?
Ammonia, NH3, is widely used as a fertilizer and in many household cleaners. How many moles of ammonia are produced when 6 mol of hydrogen gas react?
What is 4 mol NH3?
Ammonia decomposes to produce nitrogen and hydrogen gases. How many moles of H2 can be formed by the decomposition of 0.145 moles of ammonia?
What is 0.218 mol H2?
Sodium hydroxide reacts with sulfuric acid (H2SO4; MM=98.1 g/mol) to form water and sodium sulfate. How many grams of sodium sulfate (MM=142 g/mol) will be formed from 200 g NaOH (MM=40 g/mol) and an excess of sulfuric acid?
What is 355 g Na2SO4?
The coefficients of the balanced equation below are
____ AlBr3 + ____ K2SO4 ->____ KBr + ____ Al2(SO4)3
What are 2:3:6:1
States that mass is neither created nor destroyed during ordinary chemical or physical reactions. (This is why we balance chemical equations!)
What is the law of conservation of mass?
Hydrogen and oxygen gases react under a specific set of conditions to produce water. How many moles of oxygen would be required to produce 5.0 moles of water?
What is 2.5 mol O2?
2KClO3 → 2KCl + 3O2
How many moles of oxygen are produced by the decomposition of 6.0 moles of potassium chlorate, KClO3?
What is 9.0 moles of oxygen?
When copper (II) chloride reacts with sodium nitrate, copper (II) nitrate and sodium chloride are formed.
If 15 g CuCl2 (MM=134.5 g/mol) react with 20 g NaNO3 (MM=85 g/mol), how much sodium chloride (MM = 58.5 g/mol) can be formed?
(HINT: Write chemical equation)
What is 13.0 g NaCl?
The products of this reaction are two ionic compounds.
What is a double replacement reaction?