3 years ago

What is true of a compound?

Chemistry

2 answers:

zalisa [80]3 years ago

7 0

Answer:

It does not always retain the properties of the substances that make it up

Explanation:

oksian1 [2.3K]3 years ago

6 0

Answer:

A/1

Explanation:

Compounds do NOT always retain the properties of the substances that make it up.

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Microwave ovens emit microwave energy with a wavelength of .129 m. What is the energy of exactly one photon of this microwave ra

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λ=Wavelength = .129 m = 0.129 m

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___o___o___

$E = hf \\ \\ E = h \frac{c}{λ} \\ \\ E = 6.63 \times {10}^{ - 34} \frac{3 \times {10}^{8} }{0.129} \\ \\ E = \frac{6.63 \times {10}^{ - 34} \times 3 \times {10}^{8} }{0.129} \\ \\ E = \frac{663 \times {10}^{ - 36} \times 3 \times {10}^{8} }{129 \times {10}^{ - 3} } \\ \\E = \frac{1989 \times {10}^{ - 28} }{129 \times {10}^{ - 3} } \\ \\ E = 15.4 \times {10}^{ - 25} J \\ \\ E = 1.54 \times {10}^{ - 24} J$

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Which is not one of Earth's layers? A А crust B) inner core mantle D ocean

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