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Butoxors [25]
3 years ago
15

Where does the water in air come from?

Chemistry
1 answer:
Tanya [424]3 years ago
3 0

Answer:

About 90 percent of water in the atmosphere is produced by evaporation from water bodies, while the other 10 percent comes from transpiration from plants. There is always water in the atmosphere.✌️

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9. Write the number in place value table of 820245<br>​
Burka [1]

Answer:

8----hundred thousands

2----ten thousands

0----thousands

2----hundreds

4----tens

5---ones

place value

 8 = 800,000

 2 = 20,000

 0 = 0,000

2 = 200

4 =40

5 =5

5 0
3 years ago
Why does chlorine react vigorously with hydrogen in the presence of sunlight?
AleksandrR [38]
Chlorine react vigorously with hydrogen in the present of sunlight because chlorine has a great attraction for hydrogen's electron. During the reaction, chlorine  and hydrogen will donate one electron each from their valence electrons which will be shared equally by both elements, thus forming a covalent bond.
6 0
3 years ago
Exchanging ideas about science is called ______?
sesenic [268]
Communication.

When people exchange ideas about science, they are communicating with one another to both share and obtain knowledge. Collaboration is a large part of this communication, as the exchange of these ideas often leads to new discoveries and inventions.
5 0
3 years ago
What are the atomic number and mass number for the carbon isotope with seven neutrons?
Nady [450]

Answer:

The answer to your question is:  

atomic number (Z): 6

mass number (A) : 13

Explanation:

Carbon has an atomic number of 6 and a mass number of 12,

Mass number = # protons + # neutrons

12 = 6 + # neutrons

#neutrons = 12 - 6 = 6

For the carbon isotope the atomic number does not change is still 6

 13 = 6 + # neutrons

# neutrons = 13 - 6

# neutrons = 7

7 0
4 years ago
What kind of cell has a nonspontaneous voltage?
ExtremeBDS [4]

Answer:

dry cell

Explanation:

because it stops when salt distribution becomes equal as bridge is not added

7 0
3 years ago
Read 2 more answers
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