Question

HELP IF CORRECT WILL GIVE EXTRA POINTS AND MARKED BRANLIEST!!
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11) If a gas with a volume of 2 L is allowed to expand to a volume of 6 L. What happens to the pressure in the container if the temperature remains constant? * 1 point
pressure triples
pressure decreases by a factor of three pressure remains the same
not enough information

12) If the temperature of a balloon is lowered, what happens to the volume of the air in the balloon if the pressure is constant? * 1 point
It decreases
The change cannot be predicted
It stays the same
It increases

13) If the gas inside a capped syringe is heated, in which direction will the syringe plunger move? * 1 point
in
the plunger will not move
out

14) Increasing the volume of a given amount of a gas at constant temperature causes the pressure to decrease because _____________. * 1 point
the molecules are moving more slowly
there are more molecules
there are fewer molecules
molecules are striking a larger area with the same force

15) A breathing mixture used by deep-sea divers contains helium, oxygen, and carbon dioxide. The partial pressure of He and CO₂ are 81 kPa and 0.1 kPa, respectively. The total pressure is 101 kPa. What is the partial pressure of oxygen? * 1 point
66.5 kPa
80 kPa
101 kPa
20. kPa

16) Which of the following gases will effuse the most rapidly? * 1 point
helium
bromine
oxygen
nitrogen

17) Which of the following is primarily responsible for holding water molecules together in the liquid state? * 1 point
dispersion forces
ionic bonds
hydrogen bonds
polar covalent bonds

18) What causes the high melting point of ice? * 1 point
dispersion forces
covalent bonding
ionic attractions
hydrogen bonding

19) Predict which one of the following compounds would be insoluble in water. * 1 point
PbSO₄
C₆H₁₄
HCl
LiCl

20) To conduct electricity, a solution must contain * 1 point
free electrons
nonpolar molecules
ions
polar molecules

21) Colloids * 1 point
can be separated by filtering
scatter light
are homogenous
settle out when allowed to stand

22) Which of the following is a homogeneous mixture? * 1 point suspension
colloid
compound
solution

23) What occurs in solvation? * 1
point Ionic compounds are formed.
Solvent molecules surround solute ions. Solvent molecules bind covalently to solute molecules.
Solute ions separate from solvent molecules.

Answer 1

Answer:

11) pressure triples in 1st case

12) it increases

13) out

14) molecules are striking a larger area with the same force

16) oxygen

17) polar covalent bond

18) covalent bonding

19) C6H14

20) ions

21) are homogeneous

22) colloids

mark it as branliest plzzzz

Answer 2

11) pressure triples in 1st case
12) it increases
13) out
14) molecules are striking a larger area with the same force
16) oxygen
17) polar covalent bond
18) covalent bonding
19) C6H14
20) ions
21) are homogeneous
22) colloids