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stepladder [879]
3 years ago
9

Which metal was more reactive in water? How do you know?

Chemistry
2 answers:
Rom4ik [11]3 years ago
6 0

Answer:

alkali metals

Explanation:

they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.

Anna [14]3 years ago
3 0
Alkali metals xlhxgiskvsutm itsigslhaoykhskgsigs
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How many mL will a 0.205 mole sample of He occupy at 3.00 atm and 200 K? Report your answer to the nearest mL.
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1.1214 mL will a 0.205-mole sample of He occupy at 3.00 atm and 200 K.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

Using equation PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

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Putting value in the given equation:

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V= \frac{0.205 \;mole\;0.082057338 \;L \;atm \;K^{-1}mol^{-1} X 200}{3 \;atm}

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Learn more about the ideal gas here:

brainly.com/question/27691721

#SPJ1

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