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Question- Carbon dioxide makes up approximately 0.04% of Earth's atmosphere. If you collect a 2.4L sample from the atmosphere at sea level (1.00 atm) on a warm day (29oC), how many CO2 molecules are in your sample?
Articulate your answer using two significant figures.
A solution is prepared by dissolving 0.11 mol of acetic acid and 0.11 mol of ammonium chloride in enough water to make 1.0 L of solution. Find the concentration of ammonia in the solution.
What is the density of a gas in g/L that has a molecular weight of 144, if the temperature and pressure is 25 degree C and 750 mmHg?
The freezing point for t-butanol is 25.50 degrees C and kf is 9.1 degrees C/m. Usually t-butanol absorbs water on exposure to the air. If the freezing point of a 10.0 g sample of t-butanol is measured as 24.59 degrees C, how many grams of water ar..
Calculate the total salt concentration (in mole litre-1) of a cup of soup assuming that both the sodium and potassium are added as chloride salts. What is the concentration of chloride in gram per 100 mL?
Calculate the absolute entropy of Cl2(g) at 298k...include the limits of integration. entropy for Cl2= 222.96j/mol.
Determine the vapor pressure of a solution prepared by dissolving 250 g of Ethanol in 375 g of water?
a)identify the substance reduced. b)identify the substance oxidized. c)identify the oxidizing agent. d)identify the reducing agent. e)write the balanced equation for the overall reaction in acid.
Which of the following refers to particularly stable arrangements of amino acid residues in a protein that give rise to recurring patterns
Calculate the concentrations of all species in a 1.73 M Na2SO3 (sodium sulfite) solution. The ionization constants for sulfurous acid are Ka1 = 1.4× 10-2 and Ka2 = 6.3× 10-8.
Through an enolate ion reaction (aldol condensation, claisen condensation, acetoacetic ester or malonic ester synthesis), what is the reaction equation to form cyclohexene
A biochemist needs 750 mL of an acetic acid-sodium acetate buffer with pH = 4.50. Solid sodium acetate NaC2H3O2 and glacial acetic acid HC2H3O2 are available. Glacial acetic acid is 99% HCH3O2 by mass and has a density of 1.05 g/mL.
An unkown gas self-possessed of homonuclear diatomic molecules (molecules with two identical atoms) effuses at a rate that is merely 0.355 times that of oxygen gas at the same temperature. Based upon your calculations, identify the gas.
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