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Phoenix [80]
3 years ago
15

Which of the following represents a molecule?

Chemistry
2 answers:
den301095 [7]3 years ago
8 0
Hcghfghvgjljvjgvljglfkgchjgc
Alex3 years ago
7 0

Answer: Molecules can be represented with a chemical formula which shows the types of atoms in the molecule, and, uses subscripts, ti show how many of each type of atom is present. such as parentheses, dashes, brackets, commas and plus (+) and minus (−) signs.

H2O (water)

N2 (nitrogen)

O3 (ozone)

CaO (calcium oxide)

C6H12O6 (glucose, a type of sugar)

NaCl (table salt)

Explanation:

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What is the pH of a solution with a hydrogen concentration of 4.3 X 10^-12
oksano4ka [1.4K]

Answer:

pH = 11.37

Explanation:

To find the pH of a solution, we can use the formula:

pH = -log[H+]

Let's plug in what we know.

pH = -log(4.3 x 10^{-12})

Evaluate the log.

pH = 11.37

Hope this helps!

6 0
3 years ago
What increases OH ions​
hram777 [196]

Answer:

A base.

Explanation:

Basic solutions give OH- ions.

7 0
4 years ago
if the half-life of substance A is 1.5 years, how long would it take a 8.0 gram sample of substance A to decay such that only 1.
Fudgin [204]

Answer:

4.5

Explanation:

3 0
4 years ago
Please help I’ll mark brainliest. Thank you :)
Jobisdone [24]

Answer:

a. There are only 5 electrons in 2p. 2p should be filled with 6 electrons prior to 3s and 3p

b. There are 8 electrons in 2p. 2p should be filled only with 6 electrons (not 8)

Explanation:

The typical electron configuration: 1s2 2s2 2p6 3s2 3p6

a. There are only 5 electrons in 2p

=> should be 1s2 2s2 2p6 3s2 3p2

b. There are 8 electrons in 2p

=> should be 1s2 2s2 2p6 3s2 3p1

6 0
2 years ago
How does a thermometer work
andrew11 [14]
This liquid is sometimes colored alcohol but can also be a metallic liquid called mercury. Both mercury and alcohol grow bigger when heated and smaller when cooled. Inside the glass tube of a thermometer, the liquid has no place to go but up when the temperature is hot and down when the temperature is cold. Mercury is very reactive and works best. But mercury is also very a radioactive element. So, if you break the thermometer, you could get in trouble (radio active posoning) Alcohol work well, it is not radioactive and can't kill you.
Okay, hope I helped
:)))
8 0
4 years ago
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