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sveta [45]
3 years ago
15

Be able to identify the correct elements using clues such as numbers of protons,locations (family/period), number of neutrons, n

umbers of electrons
Chemistry
1 answer:
Brilliant_brown [7]3 years ago
6 0

an element's name, chemical symbol, atomic number, atomic mass.

IDK what you are even asking for

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Ray Of Light [21]
United states!!! it’s the bestttt
4 0
3 years ago
Read 2 more answers
A solution has a volume of 375 ml and contains 12.6 moles of NaCI what is it molarity
miskamm [114]

Answer:

M = 33.6M .

Explanation:

Hello there!

In this case, according to the definition of molarity which is computed by dividing the moles of solute by the liters of solution, it is possible to realize that the moles of the solute are 12.6 mol and the liters of solution are 375/1000= 0.375 L and therefore the molarity of the solution can be calculated as follows:

M=\frac{12.6mol}{0.375L}\\\\M=33.6M

Which has molar units, M.

Regards!

4 0
3 years ago
How friction reduces the efficiency of machines
Oksi-84 [34.3K]

Hello,

Work is done when a force causes an object to move in the same direction that the force is applied..... Friction reduces efficiency because when two surfaces slide past each other, friction resists their motion, and in real machines, some input work is always used to overcome friction.

Hope this helps!!!! Happy Holidays!!!! (:

8 0
3 years ago
A sample of hydrogen has an initial temperature of 50.°
Lena [83]
Using the 
V1/T1=V2/T2
where
T1=50C= 323.15K
T2= -5C=268.15 K
V2= 212m^3
substitute the given values, we will get the initial volume
V1=V2T1/T2
V1= 255.48m^3

The initial volume is 255.48m^3




6 0
3 years ago
Which of these is an example of a physical change?
vladimir2022 [97]

Answer:

Their isn't your examples but I will give you mine

Freezing, Evaporation and so on.

6 0
3 years ago
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