moles Al = 5 moles * 2 = 10 moles Al
moles S = 5 moles * 3 = 15 moles S
moles O = 5 moles * 12 = 60 moles O
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The answer's the last choice. A well tested explanation of a natural phenomenon
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
The specific heat of a material gives the energy it takes to increase the temperature of one unit mass of the material by one unit temperature. The SI unit for specific heat is therefore .
The formula relating the energy required to raise the temperature of grams of a substance with specific energy by degrees is
The question provides the following information:
Apply the formula: