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A solution was prepared by dissolving certain amount of compound in 31.8g of ccl4 has a boiling point of 0.392 K higher than that of pure ccl4 , if the molar mass of compound us 128g mol-1 , calculate the mass of the solute dissolved
When magnesium burns, it becomes heavier, while when matches burn, they become lighter. Does this observation violate the law of conservation of mass?
Element A and B form two compounds, 1 and 2, when they react with each other. When 100 g of A was
made to react with B, 330 g of compound 1 was produced. If the ratio of the masses of element B in compounds 1 and 2 is 1:3, how much compound 2 will be produced from 100 g of A?
A sample of 7.89 g of sodium is made to react with 68.4 g chlorine. Given the following information: a. All of the sodium sample reacted;
b. Some of the chlorine did not react; and
c. Sodium chloride is the only product
Is it possible to determine the mass of sodium chloride produced? Why or why not?
How much heat energy is obtain from the reaction of 2 moles of H2SO4?
A sample of a gas occupies 5.0 L at STP. What will be the volume if the temperature is set to 320K at a pressure of 1.2 atm?
A 100 mol sample of gas at 25
mass of 4.0 x 10^23 formula units of XCI
Step 1 Balance the equation
Step 2. Using the ratio and propotion method, calculate the amount of CuO needed to react with moles of NH, based on the balance equation.
