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A balloon is floating around outside your window. The temperature outside is 1\, ^{\circ}C , and the air pressure is 0.700atm . Your neighbor, who released the balloon, tells you that he filled it with 3.20moles of gas. What is the volume of gas inside this balloon?
The temperature of the mixture is 0? , and the total pressure is 1.00 atm . How many grams of helium are present in the gas mixture? Mass of He =?
calculate the pH of a solution formed by mixing 65 mL of .27 M NaHCO3 with 75 mL of .12 M Na2CO3
Determine what volume of HI, will be produced at the same temperature and pressure, If all the H2 and I2 are consumed?
Compute the heat capacity of the calorimeter in J/K assuming that no heat leaks or out of the calorimeter.
How many grams of dry NH4CL need to be added to 2.30 L of a 0.400 M solution of ammonia,NH_3 , to prepare a buffer solution that has a pH of 8.53? Kb for ammonia is 1.8*10^-5.
how to calculate mole fractions of two sustances given their weight percentages ,grams
List a balanced chemical equation for each of these chemical reaction types and explain how it is used
Estimate the heat released when ethene CH2 CH2 reacts with hydrogen gas to give CH3CH3.
Give a step by step mechanism for the reaction of the following: a. salicylic acid with acetic anhydride/ phosphoric acid b. salicylic acid with methanol/hydrochloric acid
Exactly 25mL of this solution are diluted with deionized water to a new volume of 75mL. The absorbance of this solution is found to be 0.35. How many grams of Kool-Aid were in the opened package?
Calculate the mass of methane that must be burned to provide enough heat to convert 151.0 g of water at 43.0°C into steam at 124.0°C.
You need to prepare 2.00 L of 0.100 M Na2CO3 solution. Describe the best procedure.
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