Chapter 8: Problem 94
An ore contains \(2.296 \%\) of the mineral argentite, \(\mathrm{Ag}_{2} \mathrm{~S}\), by mass. How many grams of this ore would have to be
Chapter 8: Problem 94
An ore contains \(2.296 \%\) of the mineral argentite, \(\mathrm{Ag}_{2} \mathrm{~S}\), by mass. How many grams of this ore would have to be
All the tools & learning materials you need for study success - in one app.
Get started for freeA quantity of \(0.25 \mathrm{~g}\) of a substance when vaporized displaced \(50 \mathrm{~cm}^{3}\) of air at \(0^{\circ} \mathrm{C}\) and \(1 \mathrm{~atm} .\) The gram molecular mass of the substance will be (a) \(50 \mathrm{~g}\) (b) \(100 \mathrm{~g}\) (c) \(112 \mathrm{~g}\) (d) \(127.5 \mathrm{~g}\)
Samples of \(1.0 \mathrm{~g}\) of \(\mathrm{Al}\) are treated separately with an excess of sulphuric acid and an excess of sodium hydroxide. The ratio of the number of moles of the hydrogen gas evolved is (a) \(1: 1\) (b) \(3: 2\) (c) \(2: 1\) (d) \(9: 4\)
When burnt in air, \(14.0 \mathrm{~g}\) mixture of carbon and sulphur gives a mixture of \(\mathrm{CO}_{2}\) and \(\mathrm{SO}_{2}\) in the volume ratio of \(2: 1\), volume being measured at the same conditions of temperature and pressure. Moles of carbon in the mixture is (a) \(0.25\) (b) \(0.40\) (c) \(0.5\) (d) \(0.75\)
A compound having the empirical formula, \(\mathrm{C}_{3} \mathrm{H}_{4} \mathrm{O}\), has a molecular weight of \(170 \pm 5 .\) The molecular formula of the compound is (a) \(\mathrm{C}_{3} \mathrm{H}_{4} \mathrm{O}\) (b) \(\mathrm{C}_{6} \mathrm{H}_{8} \mathrm{O}_{2}\) (c) \(\mathrm{C}_{6} \mathrm{H}_{12} \mathrm{O}_{3}\) (d) \(\mathrm{C}_{9} \mathrm{H}_{12} \mathrm{O}_{3}\)
How many grams of solute should be added in \(100 \mathrm{~g}\) water to get a solution of density \(1.2 \mathrm{~g} / \mathrm{m} 1\) and strength \(5 \%\) (w/v)? (a) \(5 \mathrm{~g}\) (b) \(6 \mathrm{~g}\) (c) \(4.17 \mathrm{~g}\) (d) \(4.35 \mathrm{~g}\)
What do you think about this solution?
We value your feedback to improve our textbook solutions.