A student mixes 50.0 mL of 1.00 M HCl with 50.0 mL of 1.00 M…
A student mixes 50.0 mL of 1.00 M HCl with 50.0 mL of 1.00 M NaOH in a coffee-cup calorimeter. The temperature increases from 22.0°C to 28.8°C. Assume the solution density is 1.00 g/mL and its specific heat capacity is 4.18 J/g·°C. (Ignore the heat absorbed by the calorimeter)What is the approximate enthalpy change, ΔH, for the neutralization reaction?A. −28.4 kJ/molB. −56.8 kJ/molC. +28.4 kJ/molD. +56.8 kJ/molE. −2.84 kJ/mol
Read DetailsIf you had 10 g of a sample and determined its density, then…
If you had 10 g of a sample and determined its density, then took 100 g of the same sample and redetermined the density. Which of the following statements is correct?A. The density of the 10 mg sample will be lower than the density of the 100 g sample.B. The densities of the 2 samples should be the same. C. The density of the 10 mg sample will be higher than the density of the 100 g sample.D. Impossible to tell without doing the experiment.E. None of the above
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