How many moles of calcium (ca) atoms are there in 77.4 g of ca?

1.94 moles

Explanation:

According to avogadro's law, 1 mole of every substance occupies 22.4 L at STP and contains avogadro's number of particles.

To calculate the moles, we use the equation:

Given mass = 77.4 g

Molar mass = 40 g/mol

Putting in the values:

Thus 1.94 moles of calcium atoms are there in 77.4 g of Ca.

for step 7 table c on the lab "newtons law of action"   the average time it took the car to travel .25 meters   was 1.92 seconds.

the average time it took the car to travel 0.50 meters was 2.61 seconds

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