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Calculate the number of kilograms of helium needed to inflate a balloon to a volume of 100,000 L at an atmospheric pressure of 250 mmHg and a temperature of -35 °C.
What difference would you predict would occur in the graphing of the data if carbon dioxide was used instead of the components of air?
Calculate the pressure of a helium sample at -207.3°C and 768 mL if it exerts a pressure of 175 kPa at 25.0°C and 925 mL
If 3.1 mol of ethane (C2H6) undergo combustion according to the unbalanced equation C2H6 + O2 ->CO2 + H2O, how much oxygen is required?
Three isotopes of argon occur in nature - 36Ar, 38Ar, 40Ar. Calculate the average atomic mass of argon to two decimal places, given the following relative atomic masses and the abundances of each of the isotopes: argon
Write a reaction for the formation of a peptide bond between alanine and serine. React the amino group of alanine with carboxyl group of serine. Remember that there are 2 products in this reaction.
What causes the colors of these complexes? How do these colors relate to the expected positions of these ligands in the spectrochemical series?
How much energy would be required to melt 26 g of HCl at its melting point of -110.8 ?C?
Choose two functional groups and for each group find a household product that contains the group. Then explain the action of the product in terms of the intermolecular forces that these groups impart to the molecule.
If 76.0 mL of .150 M HCL is needed to neutralize all the NH3 from a 2.25-g sample of organic material, calculate the mass percentage of nitrogen in the sample.
If the temperature in the laboratory is 22.3oC and the atmospheric pressure is 0.931 atm, what volume would be occupied by the carbon dioxide produced in this reaction (in cm3)?
Ba(OH)2 is dissolved in 100 grams of water at 90 degrees celsius until the sloution is saturated. If the solution is then cooled to 45 degrees celsius, how many grams of Ba(OH)2 will precipitate out of the solution?
Table salt and sugar are accidentally mixed A 4.90 g sample is burned and 2.20-g of CO2 is produced What is the mass percentage of salt in the mixture?
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