A 12 fluid ounce serving of milk contains mostly water and other vitamins and minerals. What is the concentration of the given compound in the aqueous milk liquid in units of parts per million on a mass basis? a. 184 mg of sodium b. 413 mg of calcium c. 43 mg of magnesium d. 351 mg of chloride

[References] Use the References to access important values if needed for this question. Expressing amounts of energy in different energy units is necessary to solve many chemistry problems. For practice, complete the following table. The Joule (J) is the SI unit of energy. 1 calorie (cal) = 4.184 J J cal kJ 568 149 0.807 Submit Answer Try Another Version 10 item attempts remaining pt pt pt Previous Ne re to search DELL

(CH3)2CHCH,CHO 1. NH3 2. NaCN, HCI 3. HCI, H₂O, heat

12. Consider the following reaction. CH3CH,Br + H2O CH3CH2OH + HBr (c) Calculate the enthalpy of the reactiorn (d) Is the reaction endothermic or exothermic.

Endothermic has a -AH True False

8. The diagrams below represent equilibrium mixtures at 298 K and 500 K of the reaction A2(g) + B2(g) = 2AB(g) The A2 molecules are shown in solid blue, B2 molecules in white and the AB molecules in blue and white. 8. 8. 8. 298 K 500 K Which of the following statements is true? i. The reaction is exothermic. ii. A mixture of 1 mol of A2, 1 mol of B2 and 1 mol of AB at 298 K will proceed towards products to reach equilibrium. iii. At equilibrium, the rate constant of the forward reaction is equal to the rate constant of the reverse reaction.

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CH3CH2CH2CI c. HNO3 c. H2SO4 KMNO4 AIC13 ОН, heat NH2 СООН NO2 COOH `NO2 CH2CH3 `NH2

2H9O (s) 2Hg (s) + 02 (g) O synthesis O decomposition O hydrocarbon combustion O single replacement O double replacement

Compare balls A and B in terms of potential energy in both the initial and final setups. * -Held in place Initial Final