How many atoms of Oxygen gas fill a cubic box of length 30.0 cm at 20.0ºC and 1.013 x 105 Pa? a. *6.76x1023 atoms b. '6.76x1024 atoms 9.9x1024 atoms Od9.9x1030 atoms

An expensive vacuum system can achieve a pressure as low as 1.33 x 10-7 N/m2 at 28°C. How many atoms are there in a cubic centimeter at this pressure and temperature? 42563891.55 x atoms Additional Materials CS Scannewith CamScanner Rea ting

Pr4. The pressure of an ideal gas in a closed rigid container is 0.6 atm at 35 degrees C. The number of molecules is 5×1022 (one mole of gas contains 6 x 1023 molecules and 1 atm = 1.01 × 105 Pa) a) What is the pressure in Pa and temperature in K of the gas? b) How many moles of gas is in the container? c) What is the volume of the container? d) If the container is heated to 120 degrees C, and volume remains the same what is the pressure of the gas in atm?

The density of air at 20 degree celcius is 1.204 kg/m3. The density at temperature 100 degree celcius is 0.9467 kg/m3. If an average size hot air balloon envelopes a volume of 2200 m3, how much weight can it lift (including the balloon itself)? a. 5.55 kN b. 11.1 kN c. 20.4 kN d. 26.0 kN

a.) An ideal gas is in a sealed container. By what factor does the gas temperature change if the volume is halved and the pressure is tripled? b.) An ideal gas is in a sealed container. By what factor does the gas temperature change if the volume is doubled and the pressure is tripled? c.) If you have two jars containing the same amount, n1=n2, and type of gas (for example, oxygen) and they are at the same temperature, T, what can you say about their pressure if the first jar has four times the volume of the second, V1 = 4V2?  Hint: use pV=nRT

A sample of ideal gas is in a sealed container. The temperature of the gas and the volume of the container are both increased. What other properties of the gas necessarily change? (More than one answer may be correct.)A. The rms speed of the gas atoms           B. The thermal energy of the gasC. The pressure of the gas                         D. The number of molecules of gas

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1. a) A man weighing 765 N is on a bed of nails. Calculate the pressure exerted by each nail if there are 1,000 nails and each tip has a radius r = 0.500mm (5.00 x 104 m). b) Calculate the pressure exerted on the skin by acupuncture needle of radius r = 0.100mm (1.00 x 10 m) applied with a force of 3.00 N. Ans. a. 9.74 x 10³ Pa b. 1.59 x 108 Pa [Note that the Coletta text uses N/mm², which is a needless use of non-SI units.]

1. Given 14.00 L of a gas at a pressure of 5.10 atm, what will the volume be if I increase the pressure to 10.50 atm while keeping the temperature constant? 2. Given an initial pressure of 500. atm and a temp. of 150C, what will the pressure be if I increase the temp. to 275⁰C, while keeping the volume constant? 3. Given an initial volume of 20.5 L and a temp. of 50.0 ⁰C, what will be the new volume if the temp. increases to 100 ⁰C, while keeping the pressure constant?

A 23.6L of oxygen is from 120 degrees Celsius at 334kPa is changed to standard conditions. What is the new volume? Round answer by 2 decimal places.