Download presentation

1
**Moles, volume and density**

2
Calculate the volume of a given mass of a gaseous substance from its density at a given temperature and pressure. Include: molar volume calculation Solve problems requiring interconversions between moles, mass, volume, and number of particles. Additional KEY Terms STP

3
Avogardo ( ) Avogadro’s Hypothesis - any sample of any gas at the same temperature and pressure will contain the same number of particles.

4
**Chemists use a standard temperature and pressure, STP, to measure gas volumes.**

0°C and kPa At STP: The volume of 1 mole of ANY GAS is 22.4 L. 22.4 L/mol is known as molar volume. The MASS of 22.4 L of any gas is equal to the molar mass for that gas.

5
**How many moles are in 50.0 L of Fluorine gas at**

STP? F2 = 36.0 g/mol 50.0 L 22.4 L 1 mol = mol

6
**What is the STP volume of 10.0 g of Methane gas?**

CH4 = 16.0 g/mol 10.0 g 16.0 g 1 mol 1 mol 22.4 L = L

7
**Density: A physical property that describes the mass per unit volume of a substance.**

grams (g) per litre grams per mL (or cm3)

8
**Calculate the volume, in litres, of one mole of**

ammonia (NH3) at room temperature if the density is g/L. NH3 = 17.0 g/mol 1 mol 1 mol 17. 0 g 0.696 g 1 L = L

9
Calculate the volume, in litres, of two moles of carbon dioxide, at room temperature, when the density is 1.80 g/L. CO2 = 44.0 g/mol 2 mol 1 mol 44. 0 g 1.80 g 1 L = L

11
· STP: 0°C and kPa (1 atm) · At STP, the molar volume of any gas is 22.4 L · Molar mass = total grams in 1 mole (g/mol) · 1 mole = 6.02 x 1023 particles (Avogadro) · density of a substance = mass per volume (g/L) * All roads lead to moles (convert to moles first).

12
CAN YOU / HAVE YOU? Calculate the volume of a given mass of a gaseous substance from its density at a given temperature and pressure. Include: molar volume calculation Solve problems requiring interconversions between moles, mass, volume, and number of particles. Additional KEY Terms STP

Similar presentations

OK

Gas Stoichiometry!. equal volumes of gases at the same temperature & pressure contain equal numbers of particles equal volumes of gases at the same temperature.

Gas Stoichiometry!. equal volumes of gases at the same temperature & pressure contain equal numbers of particles equal volumes of gases at the same temperature.

© 2018 SlidePlayer.com Inc.

All rights reserved.

Ads by Google

Ppt on environmental awareness Ppt on power sharing in india download song Ppt on places in our neighbourhood lesson Ppt on e marketing Ppt on bill gates life Ppt on regulated dc power supply Free download ppt on relationship between science technology and engineering Download ppt on sexual reproduction in flowering plants Ppt on new seven wonders of the world 2013 Ppt on information communication technology