1. Write an equation showing how the mass of the substance sought can be converted to the mass of the weighed substance on the right. Sought Weighed Sought Weighed *(a) SO, (b) Mg *(c) In (d) K *(e) CuO BASO, Mg,P,O, In‚O, (f) MnCl, (g) Pb,O, (h) U,P¿O1 *(i) Na,B,O, · 10H;0 B,0, Mn,O4 PbO, P;O, Cu,(SCN), (1) Na,O †NAZN(UO,),(C,H,O), · 6H,O

2 NazPO4 ( ) + _CaCl2 ( ) NacI ( )+ Ca3(PO4)2 ( ) The spectator ions in this equation (after balancing and filling in the states of matter) are (Be sure to include coefficients & chemical symbols, as well as the charges of the ions. No need to worry about making the charges subscript or typing ^ for these.) and

Question 2: (5 marks) The student dissolved 1.056 g of the given powder mixture (barium chloride + magnesium chloride) in water in a conical flask and added an excess of sulfuric acid. The mass of this white solid precipitate formed was 0.764 g, after filtering off, washing and drying it. a) Calculate the percentage, by mass, of magnesium chloride in the powder. (show all your calculations, units and significant figures are important)

I need the answers with solut

I am having a bit of trouble with significant figures and rounding. In a question such as the one below, would the sig fig I put in my answer be correct? How many moles are present in 3.44 g CoCl2 ꞏ 6H2O?      = (Which sig fig amount is correct-->) .0217 moles or .021 moles The whole answer was 0.02177904, would I round this answer to the 3rd sig fig? So, is the correct answer actually .022?

Aa.103.

1. Find the necessary amount of Ag,CO; in grams in order to obtain 79.1 g of silver. A92CO3 · Ag(s) + CO2 + 02 (unbalanced) C: 12 g/mol, O: 16 g/mol, Ag: 107.9 g/mol

One of the sources of iron is magnetite, Fe3O4 (FeO and Fe2O3 mixed), which reacts with coke (carbon) to produce iron in the liquid state and carbon monoxide. If we assume that coke is pure carbon, how much is supplied to produce 10,000 metric tons of iron?