Please answer as many as you can I need the help

1 answer:

8 0

6. Cesium and francium.

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jeka57 [31]

Answer:

933.33 g/cm³

Explanation:

Density = mass / volume

Density = 2800/3 = 933.3 g/cm³.

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Alinara [238K]

Liquid makes up most of the body

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USPshnik [31]

$mass_{oxygen} = \%mass_{oxygen} \times mass_{compound} \\ m = 63\%(100) \\ m = 0.63(100) \\ m = 63 \: grams$

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Alex_Xolod [135]

Answer:

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yaroslaw [1]

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Determine the frequency of light with a wavelength of 2.775⋅10−7 cm. Answer in units of Hz?❤

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