3. Calculate the number of moles and mass ingram_of_1 x 10^20mdecules of Nz gas.
1 answer:
Answer:
0.17×10⁻³ mol
Mass = 0.00476 g
Explanation:
Given data:
Number of molecules of N₂ = 1 ×10²⁰ molecules
Number of moles of N₂ = ?
Mass in gram of N₂ = ?
Solution:
1 mole of any substance contain 6.022×10²³ molecules
1 ×10²⁰ molecules× 1 mol /6.022×10²³ molecules
0.17×10⁻³ mol
Mass in gram:
Mass = number of moles × molar mass
Mass = 0.17×10⁻³ mol × 28 g/mol
Mass = 4.76×10⁻³ g
Mass = 0.00476 g
You might be interested in
Answer: Both images seem to represent hail and ice, these conditions are only brought by chilly temperatures and rain.
Answer:
C
Explanation:
The answer is C. A solution would be two substances mixed together, while a pure substance is the base substance, with nothing added.
<h3>
flammable liquids will catch on fire and burn easily at normal working temperatures. Combustible liquids have the ability to burn at temperatures that are usually above working temperatures. </h3>
<em>Hope this helped! :)</em>
Emulsifier is the substance that is soluble in two liquids and makes an emulsion last longer. Homogenization is the process called that reduces the size of particles so emulsions will last longer. Pressure is increased in a solvent to dissolve Large amounts of a gas. Surface roughness is increased as we grind a material. Atomic structure is used to identify the material . <u>Explanation: </u>
An emulsifier is an agent that is used to maintain emulsion stability in order to prevent the liquid's separations .
Homogenization is the process that uses the mechanical force in order to break down the liquids into smaller uniform sizes . A large amount of gas can be dissolved in the solvent by increasing the pressure of the solvent as mentioned in the Henry law .
Grinding of the material usually results in material removal which takes back the smooth surface finish of the material. The Atomic structure is used to determine the material type and its properties.
Answer:
Name Strontium
Atomic Mass 87.62 atomic mass units
Number of Protons 38
Number of Neutrons 50
Number of Electrons 38