determine the number of particles in the 2.56 mol sample of no2. 1 mol no2 = 6.02×10^23 particles no2 2.56…

determine the number of particles in the 2.56 mol sample of no2. 1 mol no2 = 6.02×10^23 particles no2 2.56 mol no2 = ?×10^? particles no2 enter the coefficient in the green box and the exponent in the yellow box. round the coefficient to two decimal places.

determine the number of particles in the 2.56 mol sample of no2. 1 mol no2 = 6.02×10^23 particles no2 2.56 mol no2 = ?×10^? particles no2 enter the coefficient in the green box and the exponent in the yellow box. round the coefficient to two decimal places.

Answer

Explanation:

Step1: Use Avogadro's number relationship

We know that 1 mol of any substance contains $6.02\times 10^{23}$ particles. To find the number of particles in 2.56 mol of $NO_2$, we multiply the number of moles by Avogadro's number. $N = n\times N_A$ where $n = 2.56$ mol and $N_A=6.02\times 10^{23}$ particles/mol. So $N=2.56\times6.02\times 10^{23}$ particles.

Step2: Calculate the product

$2.56\times6.02 = 15.4112$. So $N = 15.4112\times 10^{23}$ particles. In scientific - notation, we rewrite it as $N=1.54112\times 10^{24}$ particles. Rounding the coefficient to two decimal places, we get $1.54\times 10^{24}$ particles.

Answer:

Coefficient: 1.54 Exponent: 24