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What is the correct formula for phosphorus pentachloride?
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Chemistry
- 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), what is the theoretical yield of ammonium nickel sulfate from 1.500 g of Ni (s)? (b) The actual yield of product was 9.640 g - obviously containing coordinated water. The product was then heated strongly until all the water had been driven off. The resulting anhydrous salt had mass 7.000 g. What is the value of y? (c) Based on the mass of the anhydrous product (7.000 g), what is the % yield of the reaction?arrow_forwardIs the decomposition of CuSO4· 5 H2O a physical or a chemical change? Why?arrow_forwardWrite the balanced chemical equation for the reaction of these pairs of reactants: (a) Calcium and bromine (b) Aluminum and oxygenarrow_forward
- 1) A sample of blue crystals of copper (II) sulfate pentahydrate was heated to produce the copper(Il)sulfate tetrahydrate. (a) Write the chemical formulas of the copper(II)sulfate pentahydrate and copper(II)sulfate tetrahydrate. (b) Calculate mass percent of water in copper(II)sulfate pentahydrate (c) If 7.491 g of the copper (II) sulfate pentahydrate produces 6.951 g of the copper (II) sulfate tetrahydrate, how many grams of anhydrous copper(I1)sulfate could be obtained? (Cu=63.5 g/mol, S=32.0 g/mol, O=16.0 g/mol, H=1 g/mol)arrow_forwardGive the Stock system name for the following. (a) Fe(NO3)3(b) Au2S(c) CuIarrow_forward4) 2 2 NaHCO3 (s) ----> 2 C(s) + 3 Na(s) + 02(g) 1 H2(g) +arrow_forward
- 2. a) b)arrow_forward(a) List four physical characteristics of a solid metal. (b) List two chemical characteristics of a metallic element.arrow_forwardWhen 25 g of lead (II) nitrate, Pb(NO3)2, is mixed with 15 g of sodium iodide in water, a reaction occurs and this produces sodium nitrate and solid lead (II) iodide. (a) Write a balanced equation for the reaction. (b) Calculate the theoretical amount of lead (II) iodide produced.arrow_forward
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