Other Chemistry Answers

A tank contains 78.0 g of N₂ and 42.0 g of Ne at a total pressure of 3.75 atm and a temperature of 50.0°C. Calculate the following quantities.

(a) moles of N₂

(b) moles of Ne

(c) the partial pressure of N₂

(d) the partial pressure of Ne

Given the following amounts of gases calculate the number of moles of each gas. Calculate the volume each amount of gas would occupy at 100°C and 15 atm.

a. 5.8g NH₃

b. 48g O₂

In an experiment of titration, 25.0 mL of potassium hydroxide solution is poured

into a conical flask. A few drops of phenolphthalein are added into the solution.

The solution in the conical flask is titrated with 1.0 M sulphuric acid.

a)What is the function of phenolphthalein in this experiment

b)Write a balanced chemical equation for the reaction.

c) In this experiment, 20.00 mL sulphuric acid needed to react with 25.0 

mL of potassium hydroxide.

i. Calculate the mole for sulphuric acid.

ii. Calculate the molarity of potassium hydroxide solution.

Grasping the Concept

Use the following thermochemical equations as needed to find the heat of formation of diamond:

C(diamond) + O2(g) → CO2(g) ΔHo = -395.3 KJ

2 CO2(g) → 2 CO(g) + O2(g) ΔHo= 566.0 KJ

C(graphite) + O2(g) → CO2(g) ΔHo = -395.3 KJ

2 CO(g) → C(graphite) + CO2(g) ΔHo= -172.5 KJ

Calculate the enthalpy change when 14.5 g of water vapor condenses to liquid water.

25g of AgNo3

what volume of oxygen will be required to oxidise 1.4 cubic dm of carbon(iv)oxide and what is the volume of the product ,all volumes measured at s.t.p

State, in terms of the concentration of ions, why the 6.0 M HC(ag) is a better

conductor of electricity than the 0.1 M HCI(aq).

The nomenclature of compound elements?

The structure of CCl₃CHO-->2,2,2,trichoroethanal?