2 years ago

Which of the following elements is the most reactive?

Chemistry

2 answers:

Zepler [3.9K]2 years ago

6 0

Sodium. It reacts with most of every other element.

GuDViN [60]2 years ago

4 0

Answer: SODIUM because it is very reactive.

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A 2-kg block rests on a wall that is 3 m tall. What is the gravitational potential energy of the block? The force of gravity on

Keith_Richards [23]

PE= weight x height. (remember weight is the force of gravity acting on objects...NOT the same as mass)

PE=3*2*9.8
PE=6*9.8
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Hope this helps :D

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Can alkenes react with potassium dichromate

posledela

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3 years ago

Now they feel it is best to have you identify an unknown gas based on its properties. Suppose 0.508 g of a gas occupies a volume

pishuonlain [190]

Answer: Option (b) is the correct answer.

Explanation:

The given data is as follows.

mass = 0.508 g, Volume = 0.175 L

Temperature = (25 + 273) K = 298 K, P = 1 atm

As per the ideal gas law, PV = nRT.

where, n = no. of moles = $\frac{mass}{\text{molar mass}}$

Hence, putting all the given values into the ideal gas equation as follows.

PV = $\frac{mass}{\text{molar mass}} \times RT$

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= 71.02 g

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Thus, we can conclude that the gas is most likely chlorine.

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2 years ago