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Arturiano [62]
3 years ago
9

Fog forms when a water vapor changes to the___ state of matter?

Chemistry
1 answer:
Bumek [7]3 years ago
7 0

Answer:

Gas

Explanation:

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Calculate the ph of a buffer that is 0.145 m hc2h3o2 and 0.202 m kc2h3o2. The ka for hc2h3o2 is 1.8 × 10-5.
koban [17]

Answer:

pH = 4.8

Explanation:

A buffer is formed by a weak acid (0.145 M HC₂H₃O₂) and its conjugate base (0.202 M C₂H₃O₂⁻ coming from 0.202 M KC₂H₃O₂). The pH of a buffer system can be calculated using Henderson-Hasselbalch's equation.

pH = pKa + log\frac{[base]}{[acid]} \\pH = -log(1.8 \times 10^{-5} )+log(\frac{0.202M}{0.145M} )\\pH=4.8

6 0
2 years ago
Which of the atoms below are least likely to violate the octet rule?
Levart [38]

Answer:

F i think i pretty sure F!!!!!!!!

5 0
2 years ago
Which of these measurements is expressed as three significant figures?
kipiarov [429]

Which of these measurements is expressed as three significant figures?  


C. 4.20 g


6 0
3 years ago
3
atroni [7]

Answer:

(1) atomic numbers

Explanation:

The observed regularities in the properties of the elements on the periodic table are periodic functions of their atomic numbers.

  • Atomic number is the number of protons in an atom.
  • The periodic law states that "the properties of elements are a periodic function of their atomic number".
  • Elements on the periodic table are arranged based on the atomic numbers they contain.
  • The number of positively charged particles in an atom is the atomic number.
6 0
2 years ago
What is the mass of 6.75 moles of CO₂?
ikadub [295]
Hi there!
Thank you for choosing Brainly.

1 mole = 44.0095

So take that number and multiply it by 6.75.

You then get... 297.0641

Have a nice day.
~Brooke
8 0
3 years ago
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