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An office heater puts out 2070 Btus (British thermal units) of energy in the form of heat per hour. Given that 1 Btu = 1.055 kJ, how many megajoules of energy in the form of heat can be produced per year (365 days) bAn office heater puts out 2070 Btus (British thermal units) of energy in the form of heat per hour. Given that 1 Btu = 1.055 kJ, how many megajoules of energy in the form of heat can be produced per year (365 days) by the heater (assume continuous operation)? The heater (assume continuous operation)?
What is the net redox reaction that occurs when Ag comes into contact with acidic K2Cr2O7? Which metal is the most reactive?
State what these are, how they are made, and one way they can be used productively in research and one way they can be used in medical diagnostics.
The procedure calls for cautions addition of water to the reaction mixture while it is still hot. What purpose does the addition of water serve and why should the addition be done while the reaction mixture is hot? Provide an equation for the reac..
Why is the boiling point of octane, C8H18, higher than that of methane, CH4, if they are both nonpolar molecules? 7-Using a diagram to illustrate your answer, explain the effect of temperature on the vapor pressure of a liquid.
Consider that there are two sources of OH-in this procedure. Also, an excess of 3 mL will need to be added to your calculated value in order to suppress the hydrolysis of Al 3+.
Determine the molarity of a solution of the weak acid HCl)2; Ka = 1.10*10^-2 if it has a ph of 1.25.
When 0.450kJ of heat is added to the gas, it expands and does 219J of work on the surroundings. What is the value of \Delta H for this process? Answer in units of kJ
Solids do not "flow". What does this behavior imply about the speeds at which the individual solid particles are moving relative to each other?
What is the lewis structure and molecular shape around the carbons in CCl2CH2 as predicted by the VSEPR theory?
Sketch a phase diagram for benzene and locate these points: the triple point (5.5 0C and 3.4 mmHg), the normal boiling point (80.10C)
The root-mean-square speed of CH4 molecules at 25°C is about 0.56 km/s. What is the root-mean-square speed of a H2 molecule at 25°C?
Write an equation for the formation of an acetal from reaction of excess methanol with benzaldehyde in the presence of an acid catalyst.
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