When 50.0 ml of 0.500 m hcl at 25.0°c is added to 50.0 ml of 0.500 m naoh at 25.0°c in a coffee cup calorimeter, the temperature of the mixture rises to 28.2°c.
what is the enthalpy of reaction per mole of acid?
assume the mixture has a specific heat capacity of 4.18 j/(g ? k) and that the densities of the reactant solutions are both 1.00 g/ml.
the answer is pressure and temperature.
the law states that for an ideal gas, the pressure of a gas is directly proportional to the absolute temperature, at constant volume.
- it can be expressed as: (pi/ ti)v = (pf /t f)v
where, pi and ti are the initial pressure and temperature, pf and t f are the final pressure and temperature
- the letter (v) is written out of the brackets means that the volume is constant..
the answer to this question is option a which is a compound.
it is because zoe is investigating the composition of substance a, an unknown substance.
using chemical processes, she analyzes substance a and determines it is composed of sodium, oxygen, and hydrogen atoms in a ratio of 1 : 1 : 1.
finally, she found that the substance is a compound.
the correct answer is a compound since heterogeneous means multiple of the same different elements and substance isnt accurate and homogeneous means same. so the correct answer is a
2 k(s) + br2(g) ? 2 kbr(s) a. 1.46 mol b. 1.78 mol c. 2.92 mol d. 3.56 mol e. 5.84 mol