How many atoms are in a) 1 g of 12C? b) 1 cm3 of helium at...
How many atoms are in a) 1 g of 12C? b) 1 cm3 of helium at a pressure p = 105Pa and T = 273 K? c) 1 kg of nitrogen gas (N2)? d) In a steel bottle with 10 dm3 volume of H2 gas at p = 106 Pa?
Homework Answers
This question is based on the concept of
1. Molar mass
2. No. of atoms in 1 mole of substance
3. Universal Gas equation
The detailed solution is described below
A spherical balloon of volume 4.05 x 103 cm3 contains helium at a pressure of 1.15...
A spherical balloon of volume 4.05 x 103 cm3 contains helium at a pressure of 1.15 x 105 Pa. How many moles of helium are in the balloon if the average kinetic energy of the helium atoms is 3.60 x 10-22 J? mol
1. The Goodyear blimp contains 5.74 × 106 L of helium at 25 °C and 1.00...
1. The Goodyear blimp contains 5.74 × 106 L of helium at 25 °C and 1.00 atm. What is the mass in grams of the helium inside the blimp? 2. Tennis balls are usually filled with either air or N2 gas to a pressure above atmospheric pressure to increase their bounce. If a tennis ball has a volume of 144 cm3 and contains 0.33 g of N2 gas, what is the pressure inside the ball at 24 °C?
Consider a mixture of 2.00 g of helium and 10.0 g of xenon atoms in a...
Consider a mixture of 2.00 g of helium and 10.0 g of xenon atoms in a container with a volume of 1 L. Assume that helium and xenon are ideal gases. (a) If the root mean square speed (vrms or urms in Chapter 9) of helium is 1500 m/s, what is the temperature of the gas? (b) Assuming that the helium and xenon are at the same temperature, what is the root mean squared speed of the xenon gas? (c)...
What is the mass, in g, of 4.39 mol Xe? How many helium atoms are there...
What is the mass, in g, of 4.39 mol Xe? How many helium atoms are there in a helium blimp containing 4.27 kg of helium? Determine the number of atoms in 2.26 g Hg.
The density of solid FeFe is 7.87 g/cm3.7.87 g/cm3. How many atoms are present per cubic...
The density of solid FeFe is 7.87 g/cm3.7.87 g/cm3. How many atoms are present per cubic centimeter (cm3)(cm3) of Fe?Fe? FeFe atoms: atoms/cm3atoms/cm3 As a solid, FeFe adopts a body‑centered cubic unit cell. How many unit cells are present per cubic centimeter (cm3)(cm3) of Fe?Fe? unit cells: unit cells/cm3unit cells/cm3 What is the volume of a unit cell of this metal? volume: cm3cm3 What is the edge length of a unit cell of Fe?Fe? edge length: cm
A 4.65 L sample of helium gas contains 0.900 g of helium. How many additional grams...
A 4.65 L sample of helium gas contains 0.900 g of helium. How many additional grams of helium gas must be added to the sample to obtain a volume of 6.48 L? Assume constant temperature and pressure. (MM He = 4.00 g/mol)
Gas stoichiometry 1. Assume that 5.60 L of hydrogen gas at STP reacts with copper (II)oxide...
Gas stoichiometry 1. Assume that 5.60 L of hydrogen gas at STP reacts with copper (II)oxide according to the following balanced equation: CuO (s) + H2(g) → Cu (s) + H20 (9) a. How many moles of H2 react? b. How many moles of copper are produced? c. How many grams of copper are produced? Partial pressure: 1. What is the total pressure exerted by a mixture of 2.00 g of H2(g) and 8.00 g of N2(g) at 273 K...
1) Helium gas with a volume of 2.60 litres, under a pressure of 0.180 atmospheres at...
1) Helium gas with a volume of 2.60 litres, under a pressure of 0.180 atmospheres at a temperature of 314 K, is warmed until both the pressure and the volume are doubled. Consider Helium as a (monoatomic) ideal gas. The molar mass of Helium is 4.00g/ mol. (a) What is the final temperature? (b) What is the mass of the gas in the container? (c) How many atoms of Helium are present in this sample?
Fun with a helium balloon A loosely filled balloon contains 4.5 liters of helium gas at...
Fun with a helium balloon A loosely filled balloon contains 4.5 liters of helium gas at atmospheric pressure (PA = 101 kPa) and room temperature T = 20 C. The gas in the balloon is then heated to body temperature, 37 C, by a student. (a) The pressure inside the balloon changes very little during the heating process. What is the change in the volume of the balloon? (b) How much work does the expanding balloon do on its environment?...
Worksheet 8 (Intro) 8. A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressures...
Worksheet 8 (Intro) 8. A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressures of the three gases the tank are 35 atm of O, 5.0 atm of N2, and 25 atm of He, what is the total pressure inside of the tank? 9. The partial pressure of oxygen gas in a mixture of oxygen and nitrogen gases is 1.02 atm. The total pressure of the mixture is 2.43 atm. Calculate the partial pressure of nitrogen...
Gas stoichiometry 1. Assume that 5.60 L of hydrogen gas at STP reacts with copper (II)oxide according to the following balanced equation: CuO (s) + H2(g) → Cu (s) + H20 (9) a. How many moles of H2 react? b. How many moles of copper are produced? c. How many grams of copper are produced? Partial pressure: 1. What is the total pressure exerted by a mixture of 2.00 g of H2(g) and 8.00 g of N2(g) at 273 K...
1) Helium gas with a volume of 2.60 litres, under a pressure of 0.180 atmospheres at a temperature of 314 K, is warmed until both the pressure and the volume are doubled. Consider Helium as a (monoatomic) ideal gas. The molar mass of Helium is 4.00g/ mol. (a) What is the final temperature? (b) What is the mass of the gas in the container? (c) How many atoms of Helium are present in this sample?
Worksheet 8 (Intro) 8. A metal tank contains three gases: oxygen, helium, and nitrogen. If the partial pressures of the three gases the tank are 35 atm of O, 5.0 atm of N2, and 25 atm of He, what is the total pressure inside of the tank? 9. The partial pressure of oxygen gas in a mixture of oxygen and nitrogen gases is 1.02 atm. The total pressure of the mixture is 2.43 atm. Calculate the partial pressure of nitrogen...
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