First we must write a balanced chemical equation for this reaction
The mole ratio for the reaction between and is 1:2. This means 1 moles of will neutralize 2 moles . Now we find the moles of each reactant based on the mass and molar mass.
The was enough to neutralize the acid because 18.87:39.67 is the same as 1:2 mol ratio.
Answer:
The concentration of the magnesium fluoride solution is 0.0020 M
Explanation:
Step 1: Data given
Mass of MgF2 = 0.031 grams
volume = 250 mL = 0.250 L
Molar mass of MgF2 = 62.3 g/mol
Step 2: Calculate moles
Moles MgF2 = mass MgF2 / molar mass MgF2
Moles MgF2 = 0.031 grams / 62.3 g/mol
Moles MgF2 = 4.98 *10^-4 moles
Step 3: Calculate concentration of MgF2
Concentration MgF2 = moles MgF2 / volume
Concentration MgF2 = 4.98 *10^-4 / 0.250 L
Concentration = 0.0020 M
The concentration of the magnesium fluoride solution is 0.0020 M
I looked it up and got Precipitation
Answer:
C) Iron Combines readily with oxygen
Explanation:
When Iron combines readily with oxygen well... it rusts making it a new substance