You run from your house to the grocery store in 1.0 minute, and the store is 300 meters from your house. What is your average speed in meters per second for the trip?

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5.376 x 10²³ atoms of nickel are in 52.4g of nickel.

Explanation: -

Mass of nickel = 52.4 g

Atomic mass of nickel = 58.69 g / mol

Number of moles of nickel = Mass of nickel / atomic mass

=

= 0.893 mol of Nickel.

According to Avogadro's Law,

1 mol of Nickel has 6.02 x 10²³ atoms of nickel.

0.893 mol of nickel has x 6.02 x 10²³ atoms of Nickel

= 5.376 x 10²³ atoms of nickel.

5.376 x 10²³ atoms of nickel are in 52.4g of nickel.