객관식
What is the total number of moles of atoms present in 1 mole of NH_3?
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2. Atoms & Elements
Mole Concept
객관식
How many moles are present in 432 g of Ba(NO3)2?
A
1.65 moles
B
1.75 moles
C
2.00 moles
D
2.50 moles
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검증된 단계별 안내1
Identify the chemical formula of the compound: barium nitrate is Ba(NO\_3)\_2.
Calculate the molar mass of Ba(NO\_3)\_2 by summing the atomic masses of all atoms in the formula: Ba (1 atom), N (2 atoms), and O (6 atoms). Use the periodic table values for atomic masses.
Use the formula to find moles: \(\text{moles} = \frac{\text{mass (g)}}{\text{molar mass (g/mol)}}\).
Substitute the given mass (432 g) and the calculated molar mass into the formula to set up the calculation.
Perform the division to find the number of moles present in 432 g of Ba(NO\_3)\_2.
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