3 years ago

Help :) These substances are all ____. H2O2 Li NaCl O2

Chemistry

1 answer:

Nostrana [21]3 years ago

7 0

Compounds? Please tell me if I am correct!

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Is oxygen gas (O2) a compound or an element? Is hydrogen gas (H2) a compound or an element?

Alinara [238K]

They're both elements

4 0

3 years ago

The metal tantalum becomes superconducting at temperatures below 4.483 K. Calculate the temperature at which tantalum becomes su

masha68 [24]

Answer:

The correct answer is "-268.667°C".

Explanation:

Given:

Temperature,

= 4.483 K (below)

Now,

The formula of temperature conversion will be:

⇒ $T(^{\circ} C)=T(K)-273.15$

By putting the values, we get

⇒ $=4.483-273.15$

⇒ $=-268.667^{\circ} C$

Thus the above is the correct answer.

3 0

3 years ago

So its not A so its B C or D plz help

Rainbow [258]

Answer:

the answer is B

hope this helped!

3 0

3 years ago

Plz help thx brainliest btw :)

Marina86 [1]

Answer:

1. earth metal 2. halogen 3.The elements are arranged in seven horizontal rows, called periods or series, and 18 vertical columns, called groups. ... Elements in the periodic table are organized according to their properties.

Inventor: Dmitri Mendeleev please name most brainliest

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3 years ago

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Temperature zone occurs between tropical and polar zones

scoundrel [369]

Yes, that's correct. It's the tepid latitude.

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3 years ago