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garik1379 [7]
3 years ago
14

The Sun keeps all of the planets orbiting it because _____.

Chemistry
2 answers:
KiRa [710]3 years ago
8 0

Answer:

a. because of how the earth circulates around the sun.

Lena [83]3 years ago
8 0
The answer to your question is A.
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Which of the following atoms would have the smallest atomic radius?
e-lub [12.9K]

Answer:

Lithuim is the smallest

Explanation:

i hope this helps!!

6 0
3 years ago
Which technique can be used to remove air bubbles from a syringe? a) Hold the syringe downward, shake vigorously for 10 seconds,
swat32

hold the syringe downward,shake vigorously for sometime,and expel the bubbles through the needle using the syringe plunger. hold the syringe upright, provide a firm tap or flick to the barrel

3 0
2 years ago
Determine the heat needed to warm 25.3 g of copper from 22 degrees celsius to 39 degrees celsius.
Serggg [28]

Answer:

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

Explanation:

Q=mc\Delta T

Where:

Q = heat absorbed  or heat lost

c = specific heat of substance

m = Mass of the substance

ΔT = change in temperature of the substance

We have mass of copper = m = 25.3 g

Specific heat of copper = c = 0.385 J/g°C

ΔT  = 39°C - 22°C = 17°C

Heat absorbed by the copper :

Q=25.3 g\times 0.385 J/g^oC\times 17^oC=165.59 J

The heat needed to warm 25.3 g of copper from 22°C to 39°C is 165.59 Joules.

5 0
4 years ago
In the image below, what is the name of the unstable molecule formed during the collision of A2 and B2?
miskamm [114]

Answer:

ig activated complex coz reactants were diaatomic molecules and they were stable initially later on we collided them so they broke into activated complex and they were highly unstable so that they bonded again with another ion!!!! so according to me B is correct OPTION!!

7 0
3 years ago
2. What is the approximate mass of an atom that
ratelena [41]

Answer:

b. 45 u

Explanation:

the mass of an atom is equal to the protons plus neutrons:

26+19=45

hope this helps :)

3 0
3 years ago
Read 2 more answers
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