Must show work !! 2. Calculate the mass of a liquid that occupies 15.00 mL and h

Question

Must show work !!

2. Calculate the mass of a liquid that occupies 15.00 mL and has a density of 13.15 g/cm3

Round your answer to the right sig.figs a. 0.019725 x 104 g b. 197.25 c. 0.1973 X 103 g d. None of the above

3. Predict the geometry, the angle of the following compound: CO2 a. tetrahedral b. cubic c. bent d. linear e. trigonal planar

4. Predict the products of this reaction:

2 Al + 3 Cu(NO3)2 ----- ............ + .............. a. 2 Al + 3 Cu + 6 NO3 b. 3 Cu + 2 Al(NO3)3 c. AlCu(NO3) d. None of the above

Explanation / Answer

2) Density = Mass/Volume

13.15g/cm^3 = Mass/(15 mL)

Mass = 13.15 * 15 grams = 197.25 grams

3) CO2 is a linear molecule, hence the correct answer is Option D

Number of valence electrons = 4 + 6 * 2 = 16

Hybridization will be sp and hence the molecule will be linear

4) 2Al + 3Cu(NO3)2 -------------- 2Al(NO3)3 + 3Cu

Hence the correct answer is OptionB

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