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How many mL of 4.50 M sodium hydroxide must be added to 250 mL of a 0.200 M nitrous acid solution to make a buffer with pH = 3.00?
Name the highly volatile liquid may cause grave danger to The Environmental Health & Safety and Fire Safety professionals at happening scenes as its vapor
A compound with empirical formula C 2 H 2 N dissolved its 0.0800 gram in 10.00 g of C 6 H 6 , freezing point of resulting solution= 4.99 degree celsius
Calculate the final volume of a 0.500 L gas container that increased in temperature from twenty six degree Celsius to sixty degree celsius while the pressure increased from 760 torr to 1170 torr?
What is the density of a block of marble that occupies 251cm^3 and has a mass of 623g?" answer in units g/cm^3
For the reaction given below at 700°C, Kc = 0.534. H2(g) + CO2(g) reverse reaction arrow H2O(g) + CO(g) Calculate the number of moles of H2 that are present at equilibrium
A sample of nitrogen gas occupies a volume of 3.87 liters at 52.8 oC and 2.11 atm. What will the new temperature (in °C) when the volume increases to 4.55 liters and the pressure remains constant?
If the temperature of the water in your reaction bowl is 23 C, what is the temperature of the hydrogen gas.
A balloon ?lled with helium gas has a volume of 434 mL at a pressure of 1 atm. The balloon is released and reaches an altitude of 6.5 km, where the pressure is 0.5 atm.
A 97 gram solution of silver nitrate contains 14 grams of AgNO3. What is the percent by mass of silver nitrate in this solution?
how many grams of mercury (II) oxide are needed to create 28.9 grams of oxygen gas?
At a certain temperature, the equilibrium constant for the reaction 2HI(g)39. At a certain temperature, the equilibrium constant for the reaction 2HI(g) H2(g) + I2(g) is 0.49.
If an automobile is able to travel 242 mi on 12.0 gal of gasoline, what is the gas mileage in km/L
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