Homework answers / question archive / 1)High-density lipoprotein (HDL) is a type of cholesterol, sometimes called "good cholesterol," that is measured in a routine blood test

1)High-density lipoprotein (HDL) is a type of cholesterol, sometimes called "good cholesterol," that is measured in a routine blood test

Chemistry

Share With

---

1)High-density lipoprotein (HDL) is a type of cholesterol, sometimes

called "good cholesterol," that is measured in a routine blood test. If a 0.258-g sample of HDL has a volume of 0.215 cm3, what is the density of the HDL sample?

2)a. ____Pb(NO3)2 (aq) + ____NaOH (aq) → ____Pb(OH)2 (s) + ____NaNO3 (aq)Complete Ionic equation:

Net ionic equation:

b. ____Na3PO4 (aq) + ____Ca(NO3)2 (aq) → ____Ca3(PO4)2 (s) + ____NaNO3 (aq)

Complete Ionic equation:

Net ionic equation:

c. ____NaCl (aq) + ____AgNO3 (aq) → ____AgCl (s) + ____NaNO3 (aq)

Complete Ionic equation:

Net ionic equation:

d. ____Na2SO4 (aq) + ____AgNO3 (aq) → ____Ag2SO4 (s) + ____NaNO3 (aq)

Complete Ionic equation:

Net ionic equation:

e. ____Na2CO3 (aq) + ____BaCl2 (aq) → ____BaCO3 (s) + ____NaCl (aq)

Complete Ionic equation:

Net ionic equation:

f. ____Na2CO3 (aq) + ____HCl (aq) → ____NaCl (aq) + ____H2O (l) + ____CO2 (g)

Complete Ionic equation:

Net ionic equation:

2) Based only on intermolecular attraction, predict which of the following liquids has the highest viscosity.

  A. CH3-CO-OH

B. CH3-CH2-O-CH3

C. CH3-CH2-S-CH3

D. CH3-CH2-CH2-Cl

E. CH3-CH2-CH2-CH2-CH3

3) Propane, C3H8, is used as a fuel in many locations. Its unbalanced

 combustion reaction is as follows:

C3H8 (g) + O2 (g) → CO2 (g) + H2O (l)

If 7.3 moles of propane were to burn in excess oxygen, how many moles of water would be produced?

4) Lead reacts with hydrochloric acid to produce lead (II) chloride and

hydrogen gas. How many moles of HCl are needed to completely react with 44.9 grams of Pb?
Pb (s) + 2 HCl (aq)  → PbCl2 (s) + H2 (g)

5) How much heat is liberated at constant pressure when 1.41 g

of potassium metal reacts with 6.52 mL of liquid iodine monochloride ( d = 3.24 g/mL)?
-2K(s) + ICl(l) → KCl(s) + KI(s)ΔH° = -740.71 kJ/mol
-a.1.23 × 102 kJb.1.34 × 101 kJc.9.64 × 101 kJd.2.22 × 103 kJe.7.41 × 102 kJ

6) Potassium carbonate is frequently used in the production of cocoa

powder, and like sodium bicarbonate, is easily dissolved in water. Write the balanced reaction between potassium carbonate and acid to produce carbon dioxide.