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dolphi86 [110]
2 years ago
9

XTRA POINTS 4 CHRISTMAS What is an empirical formula?

Chemistry
2 answers:
kakasveta [241]2 years ago
6 0

Explanation:

a formula giving the proportions of the elements present in a compound but not the actual numbers or arrangement of atoms.

faust18 [17]2 years ago
3 0

Answer:

The answer is A

Explanation:

its is the chemical formula in which the subscripts are given in the smallest ratio

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Pb(NO3)2(aq) + KCl(aq) ---- → KNO3(aq) + PbC12(s)
emmasim [6.3K]
If you’re asking to balance the equation then:

Pb(NO3)2(aq) + 2KCl(aq) -> 2KNO3(aq) + PbCl2(s)

Just remember: the equations at the end is Cl not C12

Note: the small number on the bottom (subscripts) apply to the one element if it’s inside the bracket and if the small number is on the outside of the bracket it applies to all the elements. For example the 3 in (NO3)2 applied only to the O (oxygen) and the 2 applies to both N and O but don’t forget it’s multiplied. So it would be 2 N’s and 6 O’s bc the 3 multiplies with the 2 only for the O.
6 0
2 years ago
Calculate the density of oxygen,
abruzzese [7]

Answer:

density of oxygen = 1.307 g/l

Explanation:

given pressure = 1 atm temperature = 298 k

PM=DRT

where p is pressure M is molecular mass D is density R is gas constant and T is temperature

substituting the values in the equation

1\times 32=D\times 0.0821\times 298

D = 1.307 g/l.

5 0
3 years ago
How do plants use the energy from the sunlight?
slamgirl [31]

Answer:

Hey mate....

Explanation:

This is ur answer....

<em>Plants use a process called photosynthesis to make food. During photosynthesis, plants trap light energy with their leaves. Plants use the energy of the sun to change water and carbon dioxide into a sugar called glucose. Starch is stored in seeds and other plant parts as a food source.</em>

Hope it helps!

Brainliest pls!

Follow me! :)

6 0
2 years ago
Read 2 more answers
What determines the transition between different states of matter?
Scrat [10]

Answer:

Phase transition is when a substance changes from a solid, liquid, or gas state to a different state. Every element and substance can transition from one phase to another at a specific combination of temperature and pressure.

Explanation:

4 0
2 years ago
Why does carbon have the ability to form multiple bonds?​
stepan [7]

Carbon has the ability to form multiple bonds because it has four valence electrons. Having four valence electrons means that carbon has a lot of space to form bonds with other atoms, or multiple bonds, in order to reach the full octet.

Hope this helps!! :)

7 0
3 years ago
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