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Why is mercury being replaced by other liquids (such as colored alcohol) as the temperature-sensing fluid in laboratory thermometers?
What is the most likely chemical explanation for the fact that butter is a solid at room temperature while olive oil is a liquid?
if 58.7L of H2 are collected over water at 20C and 758 torr, what is the mass percent yield? (vapor pressure of water at 20C is 17.5torr)
Compute the pH of a solution made by mixing 67 grams of sodium acetate, NaCH 3 COO, to 37 g of acetic acid, CH 3 COOH, and dissolving in H 2 O to form 300. mL of solution ?
Number of protons & the number of neutrons in the nucleus of the element boron and potassium and the number of electrons in their 1st & 2nd quantum shells?
A moth-ball, composed of naphthalene (C10H8), has a mass of 1.32 g. How many naphthalene molecules does it contain?
A balloon is filled to a volume of 7.00 x 102 mL at a temperature of 20.0 oC. The balloon is then cooled at constant pressure to a temperature of 1.00 x 102 K.
At 212 mm Hg and 24 °C, a sample of gas occupies a volume of 125 mL. The volume is increased to 325 mL and the temperature is reduced to -5.0 °C. What is the final pressure of the gas in the flask?
A sample of water is collected over water at a total pressure of 616.8 mmHg at 300 C. The vapor pressure of water at 300 C is 31.8 mmHg.
how many moles can be produced from 2.5 moles of Ag2CO3 and final temperature of the calorimeter contents is 23.83°C After dissolution of the salt.
4NH3 + 5O2 yields 4NO + 6H2O Given 1.50g of NH3 reacts with 2.75g of O2 which is the limiting reactant?
Calculate the enthalpy change in kJ when 19.1g of H2S is burned. 2H2S(g) + 3O2(g) --> 2SO2(g) + 2H20(g) Change in H= -1036kJ/mol
How many resonance structures are there for the cyclohepatrienyl cation? Draw them. Are carbon-carbon bonds equivalent?
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