. (Enthalpy, Rxn Curves, Endo/Exo) Questions 1-3 of 5 | Page 1 of 2
Question 1 (1 point)
5.00 g of NaOH are dissolved in 0.100 kg of water at 20 °C. After dissolving, the final temperature was
33.2°C.
Determine the change in enthalpy (AH) in kJ/mol for NaOH.
q=m. C.AT
c=4.184 kJ/kg.
moles g + molar mass
(remember, you are calculating the AH for the water, you need to make it the opposite sign for the
crystals)
Оа
O.
Oc
Od
Oe
+44.2 kj/mol
+1.10 kj/mol
-111 kJ/mol
-44.2 kJ/mol
+111 kJ/mol
-1.10 kJ/mol
Question 2 (1 point)

What postulate of the kinetic molecular theory best explains why gases have high fluidity? because collisions between gas particles are elastic, there is no loss of energy as particles flow past each other. because gases consist of large numbers of tiny particles, they spread out and do not come in contact with each other. because the attractive forces between gas particles are negligible, gas particles can glide easily past one another. because the average kinetic energy of gas particles increases as temperature increases, gas particles behave more like a liquid. question 6 compare the compressibility of gases and liquids. support your answer by describing the arrangement of particles in gases and liquids.

If two atoms are bonded to a central atom with no lone pairs, how will they be arranged

The yearly amounts of carbon emissions from cars in belgium are normally distributed with a mean of 13.9 gigagrams per year and a standard deviation of 5.8 gigagrams per year. find the probability that the amount of carbon emissions from cars in belgium for a randomly selected year are between 11.5 gigagrams and 14.0 gigagrams per year. a. 0.340 b. 0.660 c. 0.167 d. 0.397