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Pick the correct chemical formula for the following compound:
Calcium carbonate
Solution X reacts with Ca solid to give effervescence.
Which of the following could be the identity of X(aq)?
Give the GENERAL ionic equation for aqueous silver nitrate + aqueous halide
Silver nitrate solution reacts with X(aq) to form a precipitate.
It is difficult to decide if the precipitate is cream or yellow.
Upon addition of concentrated ammonia solution, the precipitate remained. Which of the following could be the identity of X(aq)?
Acids react with bases, such as group 1 metal oxides, to give a salt and water.
The equation shows nitric acid reacting with sodium oxide.
2HNO3 + Na2O → 2NaNO3 + H2O
True or false, the chemical equation shown above is balanced?
Acids react with bases, such as group 2 metal oxides, to give a salt and water.
The equation shows hydrochloric acid reacting with barium oxide.
HCl + 2BaO → BaCl2 + 2H2O
True or false, the chemical equation shown above is balanced?
Acids react with bases, such as group 1 metal oxides, to give a salt and water.
The equation shows sulfuric acid reacting with potassium oxide.
H2SO4 + K2O → 2K2SO4 + H2O
True or false, the chemical equation shown above is balanced?
Acids react with bases, such as group 2 metal hydroxides, to give a salt and water.
The equation shows sulfuric acid reacting with strontium hydroxide.
H2SO4 + Sr(OH)2 → 2SrSO4+ 2H2O
True or false, the chemical equation shown above is balanced?
In the chemical equation shown below the stoichiometric numbers (balancing numbers) have been replaced with letters. What is the value of each letter if the lowest whole number ratio is used to balance the equation?
(In practice, where the balancing number =1, this would be implied rather than shown. For this activity if the balancing number is 1, input 1)
wC3H8 + +
Acids react with bases, such as group 1 metal oxides, to give a salt and water.
The equation shows hydrochloric acid reacting with caesium oxide.
2HCl + Cs2O → 2CsCl + H2O
True or false, the chemical equation shown above is balanced?