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BigorU [14]
3 years ago
15

A gas is collected over water at a certain temperature. The total pressure is 762. mmHg. The vapor pressure of water at this tem

perature is 17 mmHg. What is the partial pressure of the collected gas?
A. 762 mmHg
B. 17 mmHg
C. 779 mmHg
D. 745 mmHg
E. None of the above
Chemistry
2 answers:
ehidna [41]3 years ago
5 0

I Believe The Answer Is D.

ziro4ka [17]3 years ago
3 0

I strongly would choose D

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2 years ago
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Why can't polyatomic ions ever stand alone?
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The prefix "poly-" means "many," and "atomic" refers to atoms, so a polyatomic ion is made of 2+ atoms covalently bonded together. These ions are charged, which is why they can never stand alone. 
7 0
3 years ago
Please help with these asap
aleksklad [387]

14. a. Acidic

15. b. Weaker

16. d. Dilute and weak

Explanation:

14. Which type of the solution is one with the pH of 3?

Solution with pH from 1 to 7 are acidic, equal to 7 is neutral and from 7 to 14 basic. The solution with the pH equal to 3 is <u>acidic</u>.

15. The smaller the value of the base dissociation constant (Kb), the <u>weaker</u> the base.

The dissociation reaction of a base (B) is:

B + H₂O → BH⁺ + OH⁻

Kb is defined as:

Kb = ( [BH⁺] × [OH⁻] ) / ( [B] × [H₂O] )

The potency of the base depends on the concentration of the hydroxide ion [OH⁻], so if the Kb ratio is small it means that the concentration of hydroxide ion is smaller so the base will be <u>weaker</u>.

16. A 0.39 M solution of an acid that ionizes only slightly in solution would be termed <u>dilute and weak</u>.

The acid is weak because is only slightly ionizing in solution. The therm diluted is a little bit arbitrarily because we ask yourself "diluted in respect with what"? I would characterize the acid to be diluted at a concentration of 1 M and concentrated at a concentration of 10 M.

Learn more about:

pH

brainly.com/question/1402522

#learnwithBrainly

8 0
3 years ago
Which of the following molecules is nonpolar?
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7 0
3 years ago
*URGENT*
DaniilM [7]

Answer:

d hope this helps u hhwjs GD jehehj

4 0
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