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SCORPION-xisa [38]
3 years ago
7

We can identify unknown elements in a star by matching the ___________ spectrum of the star to those of known elements. *

Chemistry
1 answer:
const2013 [10]3 years ago
4 0
Emission spectrum, mass spectrum does not make sense and neither does atoms spectrum. You use the emission spectrum to compared known elements in a star to the unknown elements in a star. Hope this help!
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An object in space is made of gas and gives off light and heat energy. We can only see it at night. Which object is it? (2 point
strojnjashka [21]

Answer:

stars

earth isn't made of gas. (and you can always see it)

moon us not gas, or give off heat

sun is only visible during the day

7 0
3 years ago
If the temperature of an object is 335K,how would his be expressed on the celsius scale ?
IRISSAK [1]
335K would be expressed as 61.85 degrees Celsius  
3 0
4 years ago
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What is the basis for the classification of changes in matter into physical and chemical changes quizlet
laiz [17]

Explanation:

The basis for classifying changes in matter into physical and chemical change is to see if a material is altered after going through a process.

In a physical change only the state of matter is usually altered especially its form or shape.

Chemical change alters a substance by producing new kinds that are totally different from it.

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  • Such changes are usually irreversible.
  • Change of state is a reversible process.

learn more:

Chemical change brainly.com/question/9388643

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6 0
3 years ago
If a recycling center collects 3245 aluminum cans and there are 22 aluminum cans in 1 lb what volume in liters
Bad White [126]

The volume in liters of 3245 aluminum cans is 24.8 L.

A recycling center collects 3245 aluminum cans and there are 22 aluminum cans in 1 lb. The mass of 3245 aluminum cans is:

3245 cans \times \frac{1lb}{22cans} = 147.5 lb

To convert mass to volume, we need the density of aluminum (5.95 lb/L). The volume corresponding to 147.5 lb of aluminum is:

147.5 lb \times \frac{1L}{5.95 lb} = 24.8 L

The volume in liters of 3245 aluminum cans is 24.8 L.

You  can learn more about density here: brainly.com/question/1841285

3 0
3 years ago
PLS HELP ASAP!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
xz_007 [3.2K]

Answer:

The answer is (D).

Explanation:

A(n) "electromagnet" is an electric circuit that produces a magnetic field.

6 0
3 years ago
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