Which element is found in nature only in compounds? A. sodium B. helium C. oxygen D. nitrogen

Chemistry

2 answers:

ozzi3 years ago

7 0

The element found in nature only in compounds is Sodium

Hoochie [10]3 years ago

7 0

Answer: Option (A) is the correct answer.

Explanation:

A compound is a substance which contains two or more different atoms combined together.

Sodium is found as sodium chloride in nature. Sodium chloride is also known as common salt.

As it contains a sodium atom combined to a chlorine atom, therefore, it is a compound.

Thus, we can conclude that sodium is the element that is found in nature only in compounds.

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what volume of a 0.138 m potassium hydroxide solution is required to neutralize 26.0 ml of a 0.205 m nitric acid solution?

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A neutralization titration is a chemical response this is used to decide the composition of an answer and what kind of acid or base is in it. This is a way of volumetric analysis and the formula is ( $M1V1 = M2V2$ ).

Utilize the titration method of $M1V1 = M2V2$ in view that we're given the concentrations of every compound and the quantity of $KOH$ . Let: M1 = 0.138M, V1 = x, M2 = 0.205M, V2 = 26.0 ML.

M1 = initial mass
V1= initial volume
M2 = final mass
V2= final volume

$(M1V1 = M2V2)$
(0.138)(V1) = (0.205)x(26.0)
V2=(0.205)x(26.0)\ 0.138
V2 = 47.10 M/L
The final value of Volume needed for neutralization of nitric acid solution is V2 = 47.10 M/L