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Assign oxidation numbers to all the atoms in the following reaction and identify whether the reaction is a redox reaction. Explain your conclusion. HCl (aq) + Zn (s) -> H2 (g) + Zn2Cl (aq)
A sample of nitrogen gas in a 4.7-L container at a temperature of 28°C exerts a pressure of 3.6 atm. Calculate the number of moles of gas in the sample.
pouring liquid nitrogen onto a balloon decreases the volume of the balloon dramatically. once the liquid nitrogen is
How many liters of ethane, measured at 17.0 degrees Celsius and 719 Torr, must be burned to liberate 2.94 X 10^4 kJ of heat?
Oxygen gas is collected by water displacement from the reaction of sodium peroxide and water. The oxygen gas displaces 318 ml of water at 23 degrees C and 1 atm. What is the pressure of the dry oxygen gas?
The entropy of a gas is larger than that of the liquid because the specific volume of gas is greater thus implying more mutual configurations are allowed for molecules in a gas than in the corresponding liquid.
An iron chloride compound contains 55.85 grams of iron and 106.5 grams of chlorine. What is the most likely empirical formula for this compound
Determine the mass of carbon dioxide in chemical reaction of 30mL of vinegar and 1.3g of baking soda
Ocean water typically contains 35 moles of salt ions dissolved in each 1000 moles of water. Assuming that ocean water has the same density as pure water convert this ratio into a molarity and calculate the expected osmotic pressure of ocean water.
Explain why we take two consequent concurrent reading for calculation in titration. Explain is there any specific reason for that
A substance, B, has a normal boiling point of +89.3 °C, and its enthalpy of vaporization of 260 J g-1. To change 150 grams
A total of 18.31 mL Ne gas effuses through a hole in a plate in the same amount of time it takes 20.54 mL of another gas to effuse through the same hole under the same temperature and pressure conditions.
Explain why the mean free path does not change when the temperature goes up.
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