Thank you 1. A student determines the density of argon folloing measuremensnd co

Question

Thank you 1. A student determines the density of argon folloing measuremensnd cork ring. the following measurements: 1) mass of syringe and cork ring, to determine the density of air. She makes empty syringe and cork ring, 60.237 g: 2) mass of argon filed Syrnt doa 1 9. 3) volume of gas ml. Determine tihe in syringe: 42.0 mL. Determine the density of argon from this 2. In Part B, oxygen is selectively removed from air by reaction with iron. Nitrogen does not react with iron. Indeed, nitrogen does react with some elements but not at room temperature. With the aid of your dentify three elements that nitrogen reacts with and the products of these is unreactive towards most elements. Nevertheless, it reactant. 3. In your own words, explain what is meant by the phrase limiting 4. The reaction between silicon tetrachloride, SiCl, and magnesium produces silicon and magnesium chloride. a. Write a balanced equation that corresponds to this reaction. Calculate the moles of Si that can form from the reaction of 60.0 g of SiCl according to the balanced equation. b. c. Calculate the moles of Si that can form from the reaction of 18.0 g of Mg according to the balanced equation. d. From the quantities of SiCl, and magnesium specified in parts b and c, which reactant is the limiting reactant?

Explanation / Answer

Ans 1

The mass of argon = mass of filled syringe - mass of empty syringe

= 60.311 - 60.237

= 0.074 g

Volume = 42.0 mL

density = mass / volume

= 0.074 / 42.0

= 0.00176 g/mL

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