15251 Unt 11 Synthes . Oncaly th rein A sample of carbon dioxide is contained in...
A sample of carbon dioxide is contained in a 250.0 ml flask at 0.917 atm and 18.4 °C. How many molecules of gas are in the sample? molecules
A sample of carbon dioxide is contained in a 125.0 ml flask at 0.916 atm and 17.3 °C. How many molecules of gas are in the sample? molecules
A sample of carbon dioxide is contained in a 250.0 mL flask at 0.929 atm and 19.0∘C. How many molecules of gas are in the sample? = ____ molecules
A sample of carbon dioxide is contained in a 500.0 mL flask at 0.928 atm and 18.1 C. How many molecules of gas are in the sample?
A sample of carbon dioxide gas has a pressure of 1.89 atm and a volume of 21.5 mL at a temperature of 76.2 ℃. How many molecules of carbon dioxide gas are in the sample? a) 0.0142 b) 8.54 × 1020 c) 8.54 × 1023 d) 70.7 e) 4.26 × 1025
The balanced equation for the combustion of ethanol into carbon dioxide and water is found below.. C2H5OH (l) + 3 O2 (g) ----> 2 CO2 (g) + 3 H2O (l) a.calculate how many moles of oxygen gas are contained in 659 ml sample of oxygen at 1.07 atm and 21 degrees celcius b. a glass of wine contains 9.33g of ethanol. how many moles of oxygen would be needed to burn the ethanol contained in one glass of wine c....
A sample of air contains 78.08% nitrogen, 20.94% oxygen, 0.0500% carbon dioxide, and 0.930% argon by volume. How many molecules of each gas are present in 7.34 L of the sample at 68°C and 2.90 atm? Enter your answers in scientific notation. x 10 molecules N2 * 10 molecules O2 x 10 molecules CO2 x 10 molecules Ar
Assuming the gas is either carbon dioxide, CO2CO2, or methane, CH4CH4, how many grams, will you need to fill a 250 mL flask? Even though these are not accurate, assume the following: Temperature is 25°C Pressure is 1 atm Volume is 250 mL The gas is an ideal gas The mass needed if the gas is: CO2CO2: _____ g The mass needed if the gas is CH4CH4: _____ g
can you please show your steps ?
5. At 18 "C a sample of carbon dioxide gas has a volume of 25.5 mL under a pressure of 758 mmHg. What would the volume of the CO2 sample be at STP? 6. If 20.0 g of Clhas a volume of 4.00 L and a pressure of 6.0 atm, what is its temperature? 7. How many grams of oxygen are in 11.2 L of Oz gas at STP?
1- A sample of carbon dioxide gas at a pressure of 1.03 atm and a temperature of 210 °C, occupies a volume of 546 mL. If the gas is cooled at constant pressure until its volume is 443 mL, the temperature of the gas sample will be ______ °C. 2- A sample of nitrogen gas at a pressure of 831 mm Hg and a temperature of 81 °C, occupies a volume of 6.66 liters. If the gas is heated at...