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S8 also known as orthorhombic sulfur, what type of chemical bonds does S8 have? what type of crystal is this?
How many grams and pounds of washing soda are needed to remove the hardness from 500 gallons of water that has a hardness of 150 ppm CaCO3?
A sample of 0.0020 mole of HCl is dissolved in water to make a2000-mL solution. Calculate the molarity of the HCl solution,the [H3O+], and the pH.
The temperature of the calorimeter increases from 19.7C to 20.6C. If under constant volme conditions the heat of combustion of glucose is -2805 kj/mol, calculate the total heat capacity of calorimeter.
ideal gas on a cool morning (11*C). The air is heated to 103*C. What is the volume of the air in the balloon after it is heated?
what is the maximum pressure that will be attained in the tank before the plug will melt and release gas?
calculate the percentage ionization of benzoic acid at the following concentration : assume the approximation for both cases to be correct : a) 0.20M b) .0.00020M
Calculate the heat energy released when 29.0 g of liquid mercury at 25.00 C is converted to solid mercury at its melting point
At 760K, 85% of a sample of cyclopropane changes to propane in 79.0min. Calculate the value of the rate constant for this reaction. All isomerization reactions are first-order.
A sample containing 0.35 mol argon gas at a temperature of 13 C and a pressure of 568 torr is heated to 56 C and a pressure of 897 torr. A. What is the original volume of the gas? B. What is the new volume of the argon gas?
What is the freezing point of a solution prepared by dissolving 11.3g of Ca(NO3)2 in 115g of water? (The molal freezing point depression of constant water is 1.86 °C/m).
Calculate the amount of heat liberated when 4.80 g CH4 reacts with an excess of oxygen.
Using the reaction 2C6H6+15O2--->12CO2+6H2O, what volume of carbon dioxide will be produced when 128.0 grams of benzene react.
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