The heat capacity of liquid water is 4.18 J/g·°C and the heat of vaporization is 40.7 kJ/mol. How many kilojoules of heat must be provided to convert 1.05 g of liquid water at 76°C into 1.05 g of steam at 100°C?

100 mL of water is already in the calorimeter. Use the density of water at 25°C (0.997 g/mL) to determine the mass from the volume and record it in the data table. Mass water: 99.7 | g 3. Mass ice = Mass total = g g

Asking for Q 9

1) Combination Reactions (A+ B à AB): Two elements (or simple compounds) become one compound. Mg(s) + O,(g) à MgO(s) SO((g) S(s) + O2(g) à 2) Decomposition Reactions (AB à A+ B or ABC à AC + BC): A compound becomes two or more elements (or simpler compounds). Н,О() а Н,(g) + 0,(g) CO,(g) CUCO;(s) à CuO(s) + 3) Single Replacement Reactions (A+ BC à AC + B): An element (a metal or a halogen) replaces another element (metal or halogen) in solution. Zn(s) + CUSO,(aq) à ZnSO̟(aq) + Cu(s) NaBr(aq) à NaClI(aq) + Br,(aq) Cl,(aq) + 4) Double Replacement Reactions (AB + CD à AD + CB): Two elements "switch" (metals replace each other or hydrogen and a metal replace each other). Nal(aq) + Pb(NO,),(aq) à NaNO,(aq) à PbI,(s) NaOH(aq) ӑ H,О() + NaCl{aq) НС(аq) + Reactions may be done in any order. You DO NOT have to indicate the phase(s) of the products. Record observation(s) and write the balanced chemical equation in Table 1. Reaction #1 has been done for you. 1. Using a test tube and dropper…

O density = (mass % NaCl) X 1.0046 mass % of NaCI = (density) X 0.0035 O density = 0.0035 X (mass % of NaCl) + 1.0046 %3D mass % of NaCI = 0.0035 X (density) + 1.0046 Question 2 Which of the following is not intensive property? density boiling point melting point volume Question 3 The density of an object is

2. Mg() + _Fe(NO1)a(ua) -

A chemist prepares a solution of mercury(1) chloride (Hg₂Cl₂) by measuring out 1.96 mg of mercury(1) chloride into a 500. mL volumetric flask and filling the flask to the mark with water. Calculate the concentration in mol/L of the chemist's mercury (1) chloride solution. Be sure your answer has the correct number of significant digits. mol/L mo x10 x S

a Assume that mitochondria are cylinders 8.00 um in length and 0.800 pm in diameter. What is the volume of a single mitochondrion? The volume of a cylinder is given by the expression: V = n x y2 x h Volume= m

-1 A geochemist measures the concentration of salt dissolved in Lake Parsons and finds a concentration of 4.27 g·L *. The geochemist also measures the concentration of salt in several nearby non-isolated lakes, and finds an average concentration of 2.6 g-L. Assuming the salt concentration in Lake Parsons before it became isolated was equal to the average salt concentration in nearby non-isolated lakes, calculate the percentage of Lake Parsons which has evaporated since it became isolated. Be sure your answer has the correct number of significant digits.

A chardonnay wine is 13.5 percent by mass alcohol. If we consume 24 fluid oz of wine, and the density of the wine is 0.982 mg/mL, how much alcohol was consumed? 09.6 x 103 g alcohol O 301 g alcohol O 94 g alcohol O 106 g alcohol O 13.3 g alcohol