Question

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d.- Determine the density (in g/mL) of a substance that weighs 0.695 Ib and occupies a volume of 3.4 qt. e. found in a room to be 5.7 x 10' mg/cm. How many grams of CO are present in the room if the rooms dimensions measure 3.5 m x 3.0 m x 3.2 m? A cylindrical piece of metal is 2.03 inches high, has a diameter of 17.0 mm wide, and weighs 31.599 g. Determine its density: Will this object sink or float in water? Volume (cylinder) = π rh g- Zinc sulfide is treated with sulfuric acid, resulting in a solution with some undissolved bits of zinc sulfide and releasing hydrogen sulfide gas. If 10.85 g of zinc sulfide is treated with 50.00 mL of sulfuric acid (density- 1.153 g/mL), 65.15 g of solution plus undissolved solid remain. What is the volume (in L) of hydrogen sulfide gas evolved from this reaction? The density of hydrogen sulfide gas is 1.393 g/L.

Answer 1

weight - 0.695 Volume = 3.49 lb = 315.259 = 3217.6 m) Pesity - mass mass Vol. - 315.25 9 3217.6ml = 0.0989/mi 2 rol of room - 3.5x3x3.2 m3 - 33.6x100 cm3 concentration is 5. 2010 mg/cm3 5.7*103 mg -in, 1 con e 33.6 rio can milligrames of co - 5-240² * 33.6 x006 = 191.52 grams (xio 3 bez ols mit) height = 2.03 inch 5.156 am diameter - 17mm = 1.7cm radius - I am = 0.85 cm Volo - Tigh - T (ors) 2 5.156 - 1107cm - 11.7m) mars 31.599 vol. - Toy = 2.7 91m) It Sinks because density is more tham maks.

mass ds Zrs = 10.889. es mass to theo – Dersity Rod. = 1.153 x50 - 57.659 The total mass of solution 9 = 65.159. solid residue of ans - Brausesta = 57.65 +10.85-68.15 1 = 3.35 9. & The amont des ans reacted is - 10.85 - 3.35 R - 1.59 no. of moles das zus = 1.59 (max) 97 (molar mass) 6.077 moles I mol of zus gives & mole do Hes mats of this = moles & mw = 0.077834 = 2.639 - may 2.63 Density - 1.997 ml 1.393