Answer:
45.77 × 10²³ atoms
Explanation:
Given data:
Number of moles of iron = 7.6 mol
Number of atoms = ?
Solution:
Avogadro number:
The given problem will solve by using Avogadro number.
It is the number of atoms , ions and molecules in one gram atom of element, one gram molecules of compound and one gram ions of a substance. The number 6.022 × 10²³ is called Avogadro number.
1 mole = 6.022 × 10²³ atoms
7.6 mol × 6.022 × 10²³ atoms / 1 mol
45.77 × 10²³ atoms
<span>67.2 minutes
First convert the runner's speed from mi/h to km/h by multiplying by 1.60934 km/mi, giving
7.1 mi/h * 1.60934 km/mi = 11.43 km/h
Divide the distance by her speed.
12.8 km / (11.43 km/h) = 1.12 h
Convert hours to minutes by multiplying by 60
1.12 h * 60 min/h = 67.2 min</span>
Answer:
true I believe
Explanation: so sorry if this is wrong
<span>First, divide the mass of N2O by it's molar mass of 46 g/mol to determine the number of moles of N2O, then multiply that number by two since there are two moles of N in each mole of the compound N2O. This results in a final answer of 9.78X10^-3 moles of N in 0.225g of N2O.</span>
<span>The temperature in the tire increased, causing an increased tire pressure.</span>
