What physical properties does radium have

Chemistry

1 answer:

ololo11 [35]2 years ago

4 0

Answer:

Radium is silvery, lustrous, soft, intensely radioactive. It readily oxidizes on exposure to air, turning from almost pure white to black. Radium is luminescent, corrodes in water to form radium hydroxide. Although is the heaviest member of the alkaline-earth group it is the most volatile..

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Valentin [98]

When the volume is 450 cm3 so the boat will displace 450 g.

so we have 450 g - 14.5g = 435.5 left

so to get how many pennies can be added to the boat before it sinks can be determined by:

divided the mass for the one penny:

no.of Penny = 435.5 / 2.5g

= 174.2

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2 years ago

Which of the following mixtures may be act as a buffer solution?

lions [1.4K]

Answer:

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Explanation:

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In this case, HF is a weak acid and NaF is the conjugate base, therefore the mixture of HF, and NaF would make a perfect buffer solution.
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3 years ago

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jeka57 [31]

<u>Stimulants </u> often cause overactive eye movement

Ans (A)

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2 years ago

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Fynjy0 [20]

Answer:

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Explanation:

At STP, 1 mole = 22.4 L

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