Chemistry Answers

Calculate the boiling point of a solution in which 0.20 grams of eugenol, (C10H12O2) is dissolved in 12 0grams of benzene.Kb benzene= 2.53°C/m; Tb( solvent)=80.10°C

Given the following reactions N2 (g) + O2 (g)  2NO (g) ̇ H = +180.7 kJ 2NO (g) + O2(g)  2NO2 (g) ̇H = -113.1 kJ calculate ̇delta H for the following rxn (in kJ). 4NO (g)  2NO2 (g) + N2 (g)

What is the molality of a solution labebeled 8.6 % glucouse by weight?

Calculate the molar solubility of Al(OH)₃ in a solution that is slightly basic with a pH of 9.50.

Enter your response in scientific notation, e.g. enter 2E3 for 2000.

Plants consume carbon dioxide gas as they produce sugar during photosynhesis

                       6CO2 +6H2O → C6H12O6 + 6O2

To produce 50g of sugar, C6H12O6  how many litres of  gas at SATP does a sugar beet need to consume? [T/I-7]

Find the formal charge of each atom in the given compounds/polyatomic ion.

a. HBr

b. N₂0

c. SO₄²⁻

How does the standard hydrogen electrodes works?

What are the differences between the standard reduction potential and standard oxidation potential?

Which of the following is a conjugate acid-base pair?

A. F– and HCO3–

B. F– and H2CO3–

C. HF and F–

D. HF and H2CO3–

A solution with a pH of 5.0 ______.

A. has a hydrogen-ion concentration of 5.0 M

B. has a hydrogen-ion concentration of 1 x 10-5 M

C. is basic

D. is neutral