Inorganic Chemistry Answers

How many protons are there in 6.0 g of nitrogen gas? Avogadro constant, L = 6.022 × 1023 mol–1

A 30 cm3 sample of nitrogen was reacted with a 60 cm3 sample of fluorine according to the equation
What is the volume of the gas mixture after the reaction, at constant temperature and pressure?

Which substance is used to reduce titanium(IV) chloride in the extraction of titanium metal?

A student has a 10 cm3 sample of 1.00 × 10–2 mol dm–3 methanoic acid solution. The student is asked to dilute the methanoic acid solution to a concentration of
2.00 × 10–4 mol dm–3 by adding distilled water.
Which volume of water should be added?

A gas cylinder contains 5.0 kg of propane.
How many propane molecules are in the cylinder? The Avogadro constant, L = 6.022 × 1023 mol–1

A 4.85 g sample of anhydrous sodium sulfate is dissolved in water and the solution made up to 250 cm3 in a volumetric flask.
What is the concentration in mol dm−3 of sodium sulfate in the solution?

What is the empirical formula of an oxide of nitrogen that contains 26% nitrogen by mass?

Which compound has the fastest rate of reaction with potassium cyanide to form pentanenitrile?

Two sealed flasks with the same volume are left side by side. Flask A contains 4.0 × 10−3 mol of methane.
Flask B contains 340 mg of a different gas.
Both gases are at the same temperature and pressure. Which gas could be in Flask B?