volume of flask is 150 mL 0.0 mL Calculate the number of molecules of butane in the flask. Avogadro's number is...
How many molecules of O2 are present in a 3.90L flask at a temperature of 273K and a pressure of 1.00atm? Use 6.022×10^23 mol^ −1 for Avogadro's number. Select the correct answer below: A) 1.05×10^23 molecules B) 1.74×10^23 molecules C) 3.74×10^24 molecules D) 9.60×10^22 molecules
Carbon monoxide gas is collected at。°C ían evacuated flask with a measured volume or l 0.0 L, when an the gas has been collected, the pressure in the flask is measured to be 0.410 atm Calculate the mass and number of moles of carbon monoxide gas that were collected. Be sure your answer has the correct number of significant digits mass: U +10 mole: mol
4. Estimate the number of Coulombs of positive charge in I gram of water (H20). Avogadro's number - 6.022 x 1023 electronic charge e 1.602 x 10-19 C,
Calculate the concentration of HCl in the 250.0 mL volumetric flask and calculate the excess number of moles and total number of moles of HCl added to the alkali metal carbonate. From the total number of moles of HCl added and knowing the excess number of moles, calculate the moles of HCl that reacted with M2CO3. Use the following data for the calculations: mass of m2co3 transferred = 0.3877 g volume of 1mol HCl added to alkali metal = 20...
(1) Avogadro's number is 6.02 x 10. Arrange the following samples in order of increasing number of carbon atoms: 12g C; 1 mol C2H2; 9 x 1023 molecules [ 12g C < 1 mol CH3 < 9 x 1023 molecules [2] 12g C < 9 x 10” molecules < 1 mol C2H2 [3] Imol CH3 < 12g PC < 9 x 102 molecules [4] 1 mol CH2 <9 x 10” molecules < 12g C [5] 9 x 10” molecules <...
The density of butane, C4H10C4H10, is 2.49×10−3 g/mL2.49×10−3 g/mL. Calculate the number of moles of butane in a 95.5 mL95.5 mL sample. moles of butane:
3. Define Avogadro's Number: 4. Write the Avogadro's number 602 000 000 000 000 000 000 000 in scientific notation. 5. What is a mole? 6. Calculate each of the following (Show Work): a the number of C atoms in 0.5 mol of C b. the number of so molecules in 1.28 mol of SO2 c. the moles of Fe in a simple containing 5.22 x1022 atoms of Fe 7. Calculate the molar mass for each of the following. Use...
constants: speed of light = 3.00 x 108 m/s; Planck's constant 6.626 x 1034 J*s Avogadro's number = 6.022 x1023 /mol What is the wavelength in meters and nanometers of the following energy? In what region of the electromagnetic spectrum does it appear on? (15 points) E=4.55 x 10-2 kJ/mol Gamma Rays (10-12m), X-rays (10.9m), UV (106m), Microwave (10 m), Radio Waves (10-1m) 1.
For the gas constant, use R = 8.314 J/mol-K For Avogadro's number, use N_0 = 6.022 times 10^23 molecules. Be careful of units! All the conversions you need are in the information section of the lab. Suppose the volume of the syringe is 47.5 cc. You measure the pressure as 1.58 atm, and the temperature as 19.8 degree C. Assume: the diameter of the plunger on the syringe is 1.44 cm. Find the number of moles of gas in the...
name Prelaboratory Assignment: Gas Laws Technical objective: A flask with a sample of gas at room temperature and pressure weighs 97.4842 g. The same flask with air (density 1.17 g/L) weighs 96.8848 g. The same flask filled with water ( 0.998 g/mL) weighs 345.86 g. The pressure in the room is 0.989 atm and the temperature is 22.2°C. 1. Calculate the volume of the flask. 2. Calculate the mass of the air that the flask can hold. 3. Calculate the...