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calculate the standard enthalpy of reaction C6H6 (I) +3H2 (g)® C6H12 (I) from standard enthalpies of combustion of substances.
How is hydrogen bond different from an ionic or covanlent bond?
How many liters of O2 are needed to react completely with 45.0L of H2S at STP? 2H2S(g) + 3O2(g) -> 2SO2(g) +2H20(g)
assume that the pressure in the bottle was 1.5 atm, the bottle had a headspace of 20 mL, and the headspace contained 90% CO2. carbonate species and dissociation products of water.
What mass of CO2 and H20 would be produced during the combustion analysis of 0.1674 g of the cobalamin?
Mixing 1.0 M BaCl2 + 1.0 M K2SO4 gives what white participate. Write and balance the molecular equation.
Draw the molecule by placing atoms on the grid and connecting them with bonds. If there is more than one answer, draw all o
25.0ml of a 4.21M HCL solution at 25.2C and 50.0ml of a 2.2M NaOH solution at 25.2C are reacted together to give a temperature of 44.1C.
A 4.70 g nugget of pure gold absorbed 255 J of heat. What was the final temperature of the gold if the initial temperature was 24.0°C? The specific heat of gold is 0.129 J/(g·°C).
Understanding of chemistry basics - which of the following is not changed by the activity of an enzyme during a chemical reaction?
how much energy (MJ) can be obtained from incineration and how much CO2 (kg/year) may be released in that year? 2) How much of that energy (MJ) can be actually converted into electric power if the conversion efficiency is 23%?
we have 400g of water at temperature 64 degrees c How much heat energy must be supplied to raise the temperature of water to 90 degrees c.
What is the final pH if .2 mol HCL is added to .5L of a buffer solution formulated using .28 M NH3 and .22 M NH4CL?
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