2. Calculate the mass of 3.47x1023 gold atoms.

3.47 x atoms of gold have mass of 113.44 grams.

Explanation:

Data given:

number of atoms of gold = 3.47 x

mass of the gold in given number of atoms = ?

atomic mass of gold =196.96 grams/mole

Avagadro's number = 6.022 X

from the relation,

1 mole of element contains 6.022 x atoms.

so no of moles of gold given =

0.57 moles of gold.

from the relation:

number of moles =

rearranging the equation,

mass = number of moles x atomic mass

mass = 0.57 x 196.96

mass = 113.44 grams

thus, 3.47 x atoms of gold have mass of 113.44 grams

answer: the rate of diffusion increases with increase in temperature.

increase in temperature, increases the molecular/particles speed (kinetic energy. diffusion means movement of particles through the material.

generally, the heavier the particle the more it interacts with the environment and more the temperature matters. so higher temperature results in higher diffusion.

it is a good conductor

explanation: