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A sample of ammonium dichromate contains 2.25 moles of hydrogen atoms. How many moles of oxygen atoms are in the sample?
A 1.80-g sample of a large biomolecule was dissolved in 21.0 g of carbon tetrachloride. The boiling point of this solution was determined to be 77.85°C
A solution of barium nitrate contains 6.12 g per liter of solution. How many grams of barium nitrate is contained
Which would involve the emission of a higher frequency of light, the transition of an electron in an H atom from the n = 5 to the n = 3 level or a similar transition in an X atom?
Calculate the percent compostion of impure benzoic acid. The orignial weight of benzoic mixture was 4.23 g
4388 M KOH solution reacts with 50.60mL of CH3COOH solution, what is the molarity of the acid solution?
From the same container under the same conditions--same temperature and initial pressure, it takes 40 s for 1.00 L of O2 gas to effuse. Calculate the molar mass (in grams/mol) of the unknown gas.
Determine at what minimum angle relative to the centerline perpendicular to the doorway can someone outside the room hear no sound?
A molecule can be polar or nonpolar depending upon the nature of the bonds and the shape of the molecule. For a molecule that has different outer atoms the molecular symmetry will decide the polarity.
Draw a potential energy diagram for the rotation about the 3,4 carbon-carbon bond plotting potential energy versus torsion angle for 2-methylhexane
Find pH of A mixture formed by adding 44.0 mL of 2.5×10-2M HCl to 150mL of 1.5×10-2 M HI.
Attractive intermolecular forces exist between the molecules in the gas. The effect of these attractive intermolecular forces in a real gas is to
how many grams of calcium hydroxide will be needed to react with 10.0g of phosphate acid(h3PO4). how many grams of calcium phosphate will form?
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