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VARVARA [1.3K]
3 years ago
11

In your own words, explain why we have seasons on Earth. Why do some places have all 4 seasons and others seem to only have 1 or

2?
Chemistry
1 answer:
Ber [7]3 years ago
7 0
We have seasons on earth because of the way the earth is tilt on its axis. at a certain time in the year, the sun's rays reach certain parts of the globe more than others.

some places have 4 seasons because they are in the northern hemisphere, which is in the sweet spot of the sun's rays that give us each season. other places only have 1 or 2 because they are not in the northern hemisphere.
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If 801 J of heat is available, what is the mass in grams of iron (specific heat = 0.45 J/g・°C) that can be heated from 22.5°C to
inysia [295]

Answer:

The correct answer will be "18.25 g".

Explanation:

The given values are:

Specific heat,

C = 0.45 J/g・°C

Heat involved,

q =  801 J

Temperature,

ΔT = 120.0°C-22.5°C

     = 97.5°C

As we know,

⇒  C = \frac{q}{m \Delta T}

On substituting the given values, we get

⇒  0.45=\frac{801}{m(97.5)}

⇒  m = 18.25 \ g

3 0
3 years ago
Complete the questions below using the following diagram.
Vadim26 [7]

Answer:

atomic number- 42

chemical number- 96

number of protons-18

atomic mass-96

number of eletrons-42

number of valence eletrons- 1, 2, 13, or 18. (sorry i forgot)

nummber of shells in n=3 shell-18

number of neutrons-54

Explanation:

well i just know the periodic table by heart and thats how i got the answer XD

5 0
3 years ago
Sally does the work in 2.3 hours and Pete does 2.5
Yuri [45]
Pete because 2.5 x 2.3 is faster
5 0
3 years ago
Read 2 more answers
What is the term for the amount of salts in water? Evaporation
gtnhenbr [62]

Answer:

B.Salinity

I believe

Explanation:

report if wrong

8 0
3 years ago
Read 2 more answers
What is the difference between food web and food chain and what do they have in common?
abruzzese [7]

A food web is a system of interlocking and interdependent food chains.


A food chain is a hierarchical series of organisms each dependent on the next as a source of food.


Basically, the difference of the two is that a food web contains multiple different species in the same level that eat the animal below it's status. A food chain is one after the other.

7 0
3 years ago
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