What are the first 2 elements?

2 answers:

7 0

If you mean the first 2 elements in the periodic table, they are the Hydrogen H and the Helium He. The periodic table is always read horizontally.

Just for more information, Hydrogen is used in rocket fuels and hydrogen bombs, and the Helium is commonly used for filling balloons (And yes that's the element that gives you a funny voice if you inhale it :p )

Hope this Helps! :)

Zepler [3.9K]2 years ago

4 0

Hydrogen and Helium are the first 2 elements

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xL = 2.75 oz

so it's a proportion

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solve for x

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the number in your problem, 2.75 oz, has 3 significant figures. so you can only round this number to 3 significant figures too.

your equipment isn't accurate enough to give a reading to 10 significant figures if that makes sense. you have to give the answer in terms of the term you use with the lowest significant figures.

so with 3 significant figures,
0.0813272609 rounds to
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