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marusya05 [52]
3 years ago
12

How much time does it take for light from the center of the galaxy to reach Earth?

Chemistry
1 answer:
Ede4ka [16]3 years ago
3 0

Answer:

Light moves at 300,000 kilometers per second, divide these and you get 500 seconds, or 8 minutes and 20 seconds this is an average number.

Explanation:

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What determines a single inherited trait of an indiviual ?
joja [24]

Answer:

The answer is A.

The pair of genes from the parent determines what trait the offspring inherits.

4 0
3 years ago
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How does a law differ from a model
Ainat [17]

A model is a purposeful representation of reality. When law is more complex and dynamic. Law is the description of an observed phenomenon. Make sense?

Hopefully that helped :)

3 0
3 years ago
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Group 1 elements have an average electronegativity of 0.84 (not including hydrogen). Group 17 elements have an average electrone
Ksenya-84 [330]

The elements of group 1 makes ionic bond with the elements of group 7 due to high difference of electronegativity values.

<h3>Type of bond between group 1 and 7</h3>

The elements of first group lose its one outermost electrons while on the other hand, the elements of seven group needs one electron so they gain that one electron so they make an ionic bond with each other.

So we can conclude that the elements of group 1 makes ionic bond with the elements of group 7 because of the high difference of electronegativity values.

Learn more about electronegativity here: brainly.com/question/2415812

3 0
2 years ago
What does the pH of a solution represent?
Iteru [2.4K]

Answer:

a

Explanation:

7 0
3 years ago
What is the molarity of a solution containing 17.0 g of KCl in 213 mL of KCl solution?
Anarel [89]

Answer:

1.070MKCl

Explanation:

So we know that the original formula is M= n/L (n being moles of solute, L being liters of solvent)

Since we do not have liters in this problem, we would need to convert  milliliters to liters

<u>213 mL= 0.213 L</u>

We then see that we do not have moles, but we do have a mass, being <u>17.0 g.</u> we would need to convert these grams to moles, giving us <u>0.228 mol.</u>

Then, you would plug in <u>0.228 for your n</u>, and now you are ready to solve your original formula, plugging everything in.

M=n/L

M=0.228 mol/0.213L

M= 1.070MKCl

I know this was long, but I hope this helps (:

5 0
3 years ago
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