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mr_godi [17]
3 years ago
15

What are the elements in the first period

Chemistry
2 answers:
aliina [53]3 years ago
6 0

Answer:

Explanation:

There are only two elements in the first period: hydrogen and helium. We can explain why there is less elements in the first row in modern theories of atomic structure.

Bond [772]3 years ago
6 0

Answer:

"Hydrogen and Helium". Hydrogen and Helium are the elements of the first period in the modern periodic table.

Explanation:

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Alright the very first thing you need to do is balance the equation:

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(0.75M) x (0.094L) = C2 x (0.329L)

Rearrange equation to solve for C2:

<u>(0.75M) x (0.094L)</u>  =  C2

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<u>When the reaction is finished, the NaCl solution will have a molarity concentration of 0.214 M.</u>

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2 years ago
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