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3 years ago

TRUE OR FALSE

Chemistry

1 answer:

Talja [164]3 years ago

4 0

Answer:

True!

Explanation:

A spectrum is simply a chart or a graph that shows the intensity of light being emitted over a range of energies. Have you ever seen a spectrum before? Probably. Nature makes beautiful ones we call rainbows. Sunlight sent through raindrops is spread out to display its various colors (the different colors are just the way our eyes perceive radiation with slightly different energies).

Hope i helped!

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2. What are some strengths and limitations of the constellations

Snezhnost [94]

i did not understood ur question pls clarify and say

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3 years ago

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How many valence electrons does this atom have ? 1s^2 2s^2 2p^6 3s^2

tangare [24]

Answer

there is 2 electrons on that atoms

Explanation:

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3 years ago

What are some examples of physical properties?

den301095 [7]

Answer:

Physical properties: how soft a blanket it, how hard bread is, what color leaves are, what bleach smells like.

Chemical change: burning wood, rotting food, digestion, rusting of a nail.

Physical change: mixing salt and sugar, tearing a piece of paper, melting ice, chopping wood.

Explanation:

Physical properties are properties that are measurable.

Chemical change is when substances combine (fire and wood make burning wood) to make another substance. They aren't reversible. If you were to melt ice, you could refreeze it, you can't unburn wood.

Physical change is something that alters the form of the substance but not the chemical composition.

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3 years ago

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Sub-groups on periodic table

marissa [1.9K]

Answer:

Subgroups S, P, D, F, including elements of blocks s, p, d, f, respectively.

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3 years ago

if during the interaction of 36.5 g of hydrochloric acid with magnesium 137 kg of joules energy are released, how much energy wo

svetoff [14.1K]

Explanation:

ANSWER

The molarity =

molecularweight

density×purity×10

36.5

1.18×36.5×10

=11.8molar

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3 years ago