Give the oxidation state of sulfur in (a) S₈; (b) SF₄; (c) SF₆;(d) H₂S; (e) FeS₂; (f) H₂SO₄; (g) Na₂S₂O₃.5H₂O

The elements sodium, aluminum, and chlorine are in the same period.(a) Which has the greatest electronegativity?(b) Which of the atoms is smallest?(c) Write the Lewis structure for the simplest covalent compound that can form between aluminum and chlorine.(d) Will the oxide of each element be acidic, basic, or amphoteric?

Write a balanced chemical equation for the reaction thatoccurs when (a) Mg(s) reacts with Cl2(g); (b) barium carbonatedecomposes into barium oxide and carbon dioxide gaswhen heated; (c) the hydrocarbon styrene, C8H8(l), is combustedin air; (d) dimethylether, CH3OCH3(g), is combustedin air.

Consider the series of reactions to synthesize the alum (KAl(SO4 )2 · xH2O(s)) from the introduction. (a) Assuming an excess of the other reagents, from one mole of aluminum Al (s), how many moles of alum will be produced?  (b) Assuming an excess of the other reagents, from one mole of potassium hydroxide KOH, how many moles of alum will be produced? (c) Assuming an excess of the other reagents, from one mole of sulfuric acid H2SO4 , how many moles of alum will be produced? (d) If you start the synthesis with 1.00 g of Al, 40.0 mL of 1.50 M KOH, and 20.0 mL of 9.00 M H2SO4 , which of the three will be the limiting reagent? (e) Assuming that the product is anhydrous (that there are no waters of hydration), calculate the theoretical yield of alum, in grams, based on the amounts of reagents in part (d). 3. Consider the nickel salt: (NH4 )2Ni(SO4 )2 ·y H2O (Ammonium Nickel Sulfate Hydrate), where y is the number of coordinated waters. (a) Assuming that the product is anhydrous (y = 0),…

(a) Which poisonous gas is evolved when white phosphorus is heated with Cone. NaOH solution? Write the chemical equation. (b) Write the formula of first noble gas compound prepared by N. Bartlett. What inspired N. Bartlett to prepare this compound? (c) Fluorine is a stronger oxidising agent than chlorine. Why? (d)Write one use of chlorine gas.

(a) List four physical characteristics of a solid metal. (b) List two chemical characteristics of a metallic element.

Methylhydrazine, N2H3CH3(l), is used with the oxidizer dinitrogentetroxide, N2O4(l), to power the steering rockets of theSpace Shuttle orbiter. The reaction of these two substancesproduces N2, CO2, and H2O. Write a balanced equation forthis reaction.

What mass of sodium hydroxide ,NaOH, would be required to produce 5.97 g of the antacid milk of magnesia,Mg(OH)2,by the reaction of MgCl2with NaOH

Consider the series of reactions to synthesize the alum (KAl(SO4 )2 · xH2O(s)) from the introduction. Assuming an excess of the other reagents, from one mole of potassium hydroxide KOH, how many moles of alum will be produced?

The first two steps in the industrial synthesis of nitric acid produce nitrogen dioxide from ammonia: 4 NH; (g) + 5 0, (g) = 4 NO (g) + 6 H,0 (g) K1 2 NO (3) +0, (g) = 2NO, (g) K2 The net reaction is: 4 NH; (g) + 70, (g) = 4 NO, (g) + 6 H,0 (g) K Write an equation that gives the overall equilibrium constant K in terms of the equilibrium constants K, and K,. If you need to include any physical constants, be sure you use their standard symbols, which you'll find in the ALEKS Calculator. K = olo