Answers by ChesterNvu69

0 votes

29 views

Calculate the standard potential of the cell Ag(s) | Ag+(aq, 0.0100 M) || Cu2+(aq, 1.00 M) | Cu(s) at 25°C.

answered 1 day ago in ElectroChemistry

0 votes

21 views

Calculate the standard enthalpy change for the reaction: 2NaOH (s) + H2SO4 (aq) → Na2SO4 (aq) + 2H2O (l)given that the standard enthalpy of formation of Na2SO4 (aq) is -1385 kJ/mol, and the standard enthalpies of formation of NaOH (s), H2SO4 (aq) and H2O (l) are -425 kJ/mol, -814 kJ/mol and -286 kJ/mol respectively.

answered 2 days ago in Chemical thermodynamics

0 votes

51 views

Calculate the enthalpy change for the combustion of methane gas (CH4) using Hess's Law, given the following equations and enthalpy changes: C(s) + O2(g) → CO2(g), ΔH = -393.5 kJ/mol2H2(g) + O2(g) → 2H2O(l), ΔH = -571.6 kJ/mol CH4(g) + 2O2(g) → CO2(g) + 2H2O(l), ΔH = ?

answered Jan 23 in ThermoChemistry

0 votes

37 views

A chemical engineering company has a mixture of ethanol and water with a concentration of 30% ethanol to separate using a distillation column. The company needs to obtain a concentration of 80% ethanol in the distillate at a reflux ratio of 3. Calculate the number of theoretical plates required in the column for the separation, assuming no vapor or liquid bypass, and that the minimum vapor velocity is maintained.

answered Jan 22 in Chemical engineering

0 votes

16 views

What is the social-cognitive approach?

answered Jan 20 in Psychology

0 votes

18 views

When evaluating the theories of love, what is the theory of compassionate love?

answered Jan 16 in Psychology

0 votes

48 views

When does the Information Processing Model suggest forgetting occurs?

answered Jan 15 in Psychology

0 votes

25 views

What is the social learning theory of aggression?

answered Jan 15 in Psychology

0 votes

37 views

What is the difference between a correlation and a regression analysis?

answered Jan 14 in Psychology

0 votes

21 views

What kind of diseases involve the immune system accidentally attacking healthy body cells?

answered Jan 7 in Science

0 votes

19 views

Getting the same result when an experiment is repeated is called what?

answered Dec 30, 2024 in Science

...