Explain by writing balanced net ionic equations
The net ionic equation for the aqueous neutralization reaction between acetic acid and sodium hydroxide is different from that for the reaction between hydrochloric acid adn sodium hydroxide. Explain by writing balanced net ionic equations.
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Suppose a mixture contains helium and oxygen gases. If the partial pressure is the same as the partial pressure of oxygen, what do you know about the number of helium atoms compared to the number of oxygen molecules?
A batted baseball leaves the bat at an angle of 37 degrees above the horizontal and is caught by an outfielder 120m from the plate. The x-axis is horizontal, and they y-axis is vertical. What is the initial velocity of the ball?
The specific enthalpy of steam is 2974 kJ/kg at 260ºC and 7 bar and 2860 kJ/kg at 200ºC and 4 bar. Use the open-system energy balance to calculate the exit steam velocity.
What is the gravitational potential energy of the basketball, relative to the ground when it is released?
You pull a 12-kg box across the floor with a strap that is at an angle of 45° above the horizontal. Find the normal force and the tension in the strap, given that the box moves with constant speed and that the coefficient of kinetic friction b
A .5 kg steel (Cp = .5 kJ/kg-K) kivet cools from 800K to 300K upon being installed in a riveted building structure. What is the total entropy change of the Universe (system + surroundings) during the process?
For a mercury column barometer tomeasure atmospheric pressure as 760 mm Hg, the column containing the mercury must be completely evacuated.
What is the entropy change associated with the following process? Combustion of methane at standard amospheric pressure with 20% excess air in an adiabatic reactor when all reactants.
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