Other Chemistry Answers

When water heated to a temperture 'x' it gets converted into steam at temperture 'x' by process called 'R'.And when steam at temperture'x' is cooled ,it gets reconverted into water at the same temperture 'x' by process called 's'.what is the process 'r'and 's' know as?how much is the value of 'x' in kelvin?what is the name of t0he energy absorbed during the process 'R'

What is ΔHreaction for the decomposition of 1 mole of sodium chlorate (H^0f values NaClO3(s) =
-85.7kcal/mol, NaCl(s) = -98.2kcal/mol, O2 (g) = 0kcal/mol
A) -183.9 kcal
B) -91.9 kcal
C) +45.3 kcal
D) +22.5 kcal
E) -12.5 kcal

What is the approximate pH of a 0.005 M solution of H2SO4?
A) 1
B) 2
C) 5
D) 9
E) 13

The shape of a PCl3 molecule is described as
A) bent
B) trigonal planar
C) linear
D) trigonal pyramidal
E ) tetrahedral

How much water in liters, must be added to 0.5 liter of 6 M HCl to make the solution
2 M?
A) 0.33
B) 0.5
C) 1
D) 1.5
E) 2

Which value best determines whether a reaction is spontaneous?
A) change in Gibbs free energy, ΔG
B) change in entropy, ΔS
C) change in kinetic energy, ΔKE
D) change in enthalpy, ΔH
E) change in heat of formation, ΔH0f

If 49 grams of H2SO4 react with 80 grams of NaOH, how much reactant will be leftover after the reaction is complete?
A) 24.5g of H2SO4
B) none of either compound
C) 20 g of NaOH
D) 40 g of NaOH
E) 60 g of NaOH

All of the following have covalent bonds EXCEPT
A) HCl B) CCl4 C) H2O D) CsF E) CO2

Please draw out two reaction energy diagrams, one in which the reaction is exothermic, and the other in which the reaction is endothermic. What is the relative value of ΔH in each case?

NO2 + H2O -> HNO3 + NO
How many grams of nitrogen dioxide are required in this reaction to produce 5.00 g HNO3?