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explain why it is dangerous to mix solutions in a test tube by placing a finger or thumb over the opening of the tube and inverting it
How much energy (in calories) is needed to heat 17cm^3 of fat from room temperature (25 C) to its melting point (35 C)?
The relationship (if any) of the lattice energy of compounds such as ZnO vs. H3BO3 vs. their respective solubilities. For instance, at neutral pH and standard conditions
Give an acceptable name and identify the functional group; and
at 400 K, the rate of decomposition of a gaseous compound initially at a pressure of 12.6 kPa, was 9.71 Pa/s when 10.0 % had reacted and 7.67 Pa when 20.0 % had reacted.Determine the order of reaction.
A stock solution is prepared by adding 24 mL of 0.4 M Na3PO4 to enough water to make 76 mL. What is the PO43- concentration of 25 mL of the stock solution
A sample of neon has a volume of 270 mL when it is at a pressure of 831 mmHg. What will be the volume when the pressure is increased to 1238 mmHg?
Determine the standard reaction enthalpy for the partial combustion of methane to carbon monoxide according to the following reaction:
Aldol condensation: why must aldehyde contain none of corresponding acid? In the aldol condensation with benzaldehyde + acetone (NaOH, ethanol) --> dibenzalacetone
if carbon atoms started out neutral but ended up partially charged. did they gain electrons. lose them. is the carbon being reduced or oxidized?
When a neon atom is electrified, the electrons jump to higher orbits. One of the electrons falls from an outside orbit to an inside orbit giving off red light with a wavelength of 7.34 x 10-7 m. Calculate the frequency of the red light given off b..
How much thermal energy transfer is required to vaporize 1.0 metric tone of ammonia?(1 metric ton = 10^3Kg). The delta H vaporization for ammonia is 25.1KJ/mol.
A sample of a gas occupies 1470 mL at 60.7?C and 740 torr. What volume would it occupy at the same pressure and 450?C.
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