How many cobalt atoms are in 345 g of cobalt? Calculate the molar mass of carbon tetrachloride, CCl4. What’s the mass of 4.23 moles of sodium chloride, NaCl?
Respond to the following based on your reading.
How many cobalt atoms are in 345 g of cobalt?
Calculate the molar mass of carbon tetrachloride, CCl4.
What’s the mass of 4.23 moles of sodium chloride, NaCl?
Titanium has become the preferred metal for high-end bicycles because they’re significantly lighter than bicycles made with iron. Explain why one mole of titanium weighs less than one mole of iron.
Road salt is used in northern climates by the metric ton. How many moles of calcium chloride (CaCl2) does a town use daily if it uses 1.2 metric tons a day? 1 metric ton = 1000 kilograms
The correct answer and explanation is :
Answers:
- Number of cobalt atoms in 345 g of cobalt:
(\approx 3.53 \times 10^{24}) atoms of cobalt. - Molar mass of carbon tetrachloride (CCl₄):
(153.81 \, \text{g/mol}). - Mass of 4.23 moles of sodium chloride (NaCl):
(\approx 247.20 \, \text{g}). - Why one mole of titanium weighs less than one mole of iron:
Titanium atoms have a lower atomic mass (47.87 g/mol) than iron atoms (55.85 g/mol). Since a mole is defined as (6.022 \times 10^{23}) atoms, one mole of titanium has the same number of atoms as one mole of iron but weighs less due to its smaller atomic mass. - Moles of calcium chloride (CaCl₂) used daily if a town uses 1.2 metric tons (1200 kg) per day:
(\approx 10,812.76) moles of calcium chloride per day.
