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Inorganic Chemistry
Oxygen occupies 400 Liters at 28 degree celsius at a pressure of 70 cm Hg. What will be the new volume if the new temperature and pressure at 50 degree celsius and 75 cm Hg respectively?
Inorganic Chemistry
Given the following thermochemical equations:
X2 + 3Y2 ----> 2XY3 ^H1= -370 kJ
X2 + 2Z2 ----> 2XZ2 ^H2= -170 kJ
2Y2 + 2Y2Z -----> 2Y2Z ^H3= -280 kJ
Calculate the change in enthalpy for the following reaction:
4XY3 + 7Z2 -----> 6Y2Z + 4XZ2
change H= ________ kJ
X2 + 3Y2 ----> 2XY3 ^H1= -370 kJ
X2 + 2Z2 ----> 2XZ2 ^H2= -170 kJ
2Y2 + 2Y2Z -----> 2Y2Z ^H3= -280 kJ
Calculate the change in enthalpy for the following reaction:
4XY3 + 7Z2 -----> 6Y2Z + 4XZ2
change H= ________ kJ
Inorganic Chemistry
The density of lead is 111.342 g/cm3. What would be the volume of a 200.0 g sample of this metal?
Inorganic Chemistry
How many cm3 would a 515.932 g sample of copper occupy if it has a density of 18.92 g/cm3?
Inorganic Chemistry
Pure gold has a density of 119.32 g/cm3. How large would a piece of gold be if it had a mass of 3118.97 g?
Inorganic Chemistry
What is the mass of a 1350 cm3 sample of pure silicon with a density of 21.336 g/cm3?
Inorganic Chemistry
How many grams of tin would occupy 15.5 L, if it has a density of 17.265 g/cm3?(hint 1L=1000cm3)
Inorganic Chemistry
The density of silver is 110.49 g/cm3. If a sample of pure silver has a volume of 112.993 cm3, what would the mass?
Inorganic Chemistry
Calculate the number of protons neutrons , electrons and neutrons of calcium ion of CaCl2?
Inorganic Chemistry
In a constant-pressure calorimeter, 55.0 mL of 0.790 M H2SO4 was added to 55.0 mL of 0.250 M NaOH. The reaction caused the temperature of the solution to rise from 23.48 °C to 25.18 °C. If the solution has the same density and specific heat as water, what is ΔH for this reaction (per mole of H2O produced)? Assume that the total volume is the sum of the individual volumes.
