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algol [13]
3 years ago
15

What is the symbol for the element with the atomic number 8

Chemistry
2 answers:
Aloiza [94]3 years ago
6 0

Answer: O

Explanation: oxygen

Elenna [48]3 years ago
3 0
It would be oxygen from what I believe
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Anna [14]

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instrumental music is used in festivals, rituals, etc.

Explanation:

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3 years ago
1. The immediate surroundings of an individual
aalyn [17]

Answer:

1,b

2,c

3,d

4,g

5a

6f

7,e

Explanation:

1,environment

2,community

3,ecosystem

4,organism

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3 0
3 years ago
3. Which change of state involves adding thermal energy to a substance!
MakcuM [25]

Answer:

A) Melting

Explanation:

The three changes of phase described in this problem are:

  • Melting: melting occurs when a substance in solid state turns into liquid state. Since molecules in liquid state have more energy than molecules in solid state (because in liquids, molecules can slide past each other, while in solids they can't move, but only vibrate), thermal energy must be added in order to melt a substance
  • Freezing: freezing occurs when a liquid substance turns into solid state (the opposite of melting). Since molecules in liquid state have more energy than molecules in solid state, thermal energy must be removed from the substance in order to cause freezing
  • Condensation: condensation occurs when a gaseous substance turns into liquid state. Since molecules in gaseous state have more energy than molecules in liquid state, thermal energy must be removed from the substance in order to cause condensation

So the correct option is

A) melting

5 0
3 years ago
sulfur (s) is in group 16 of the periodic table. how many valence electrons dos an atom of sulfur have?
Alex73 [517]
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Hope this helps!
3 0
3 years ago
An object with the mass of 2300 g has a force of 6.2 Newton's applied to it. What is the resulting acceleration of the object?
Triss [41]

Answer:

\boxed {\boxed {\sf a\approx 2.7 \ m/s^2}}

Explanation:

Force is equal to mass times acceleration.

F=m*a

By dividing both sides by m, we rearrange the formula for a (acceleration).

\frac{F}{m} =a

The force is 6.2 Newtons, but we can convert the units to make the problem easier later on.

  • A Newton is equal to 1 kg*m/s², so 6.2 N is equal to 6.2 kg*m/s².

The mass is 2300 grams, but we need to convert it to kilograms.

  • To convert grams to kilograms, divide by 1,000
  • 2300 g/1000= 2.3 kg

F= 6.2 \ kg*m/s^2\\m=2.3 \ kg

Substitute the values into the formula.

a=\frac{6.2 \ kg*m/s^2}{2.3 \ kg}

Divide. Note that the kilograms or "kg" will cancel each other out (this is why we converted the units).

a=\frac{6.2 \ m/s^2}{2.3 \ }

a=2.69565217 \ m/s^2

Round to the nearest tenth. The 9 in the hundredth place tells us to round up to 2.7

a\approx 2.7 \ m/s^2

The acceleration is about <u>2.7 meters per second squared.</u>

6 0
3 years ago
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