Answer question Becording to the data given. Date: Weight of cream is 326 kg. Table shows some data obtained directly from Lactascan instrument. Fat % SNF % Lacto- density 27.32 30.23 Raw milk 4.15 7.97 Skim milk 0.08 8.26 Q1. Calculate fat percent of cream A) 46 B) 28C) 32) D) 0.046 Q2. Calculate efficiency of the cream separator. A) 100% B) 98% C)97% D) 96% D) 87.2% amount 2500 L E) 0.28

Sample: Saline 0.900% (m/v), in sodium chloride (NaCl). Data: M.A. (g/mol): Na = 22.9898; K = 39.0983; Cr=51.9961; Ag = 107.8682; Cl = 35.453; N=14.0067; O = 15.9994. Material available in the laboratory's warehouse: Reagents: distilled water; standardized solution of silver nitrate (AgNO₃), at a concentration of 0.09980 mols/L; Potassium chromate solution (K₂CrO₄) 1%; ammoniacal ferric alum solution [Fe(NH₄)(SO₄)₂] and; nitrobenzene (or cooking oil, alternatively); 0.1000 mols/L potassium thiocyanate (KSCN) standard solution. Glassware: beakers of all sizes available on the market; 50, 100, 150, 200 and 250 ml Erlenmeyers; 10.00 and 25.00 mL volumetric pipettes; 15.00 mL burette; 30.00, 50.00 and 100.00 mL volumetric flasks Calculate the molarity of saline, in terms of the NaCl concentration (concentration in mols/L). (a) 0.900 mols/L (b) 5.84 mols/L (c) 0.154 mols/L (d) 0.0154 mols/L

A 0.53 g sample containing KBr (MW=119) is dissolved in 50 mL of distilled water. Titrating with 0.04614 N AgNO3 requires 28.5 mL to reach the endpoint. Calculate the %w/w KBr in the sample. (Round-off your answer to 2-decimal places)   Answer = ____%

ers is or h of Part B using a control serum: 2. The following are the results of a series of bicarbonate determinations (mmol/L) run in September Calculate the: a) mean b) median 27, 25, 25, 25, 24, 24, 26, 25, 24, 25 c) mode 25 37.5? 25 d) standard deviation 24 ° ( ! ! ! ! / SY Frrrrrr gr d d 24 -24 danmun son -25 -27 25+25 format. } 251 २ 1 rithin than er the + S-SUM Rnd (-) S-VAR 2 Ran# X! d/c a b/c x" STO RCL ENG SHIF 0999 8 x10x