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AleksandrR [38]
3 years ago
14

Why does Earth orbit the Sun rather than any other body in the solar system? A) The mutual repulsions among all the planets hold

Earth in its orbit.
B) The Earth is closer to the Sun than other bodies in the solar system.
C) The Sun is the most massive object; gravitational attraction is related to mass.
D) The rotational motions of all the planets, including Earth, cause them to remain in its orbit around the Sun.
Chemistry
2 answers:
lora16 [44]3 years ago
7 0
<span>C) The Sun is the most massive object; gravitational attraction is related to mass. 

I hope helped ^0^</span>
Salsk061 [2.6K]3 years ago
4 0
C because the more amounts of mass an object has will give it a bigger gravitational field
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How many moles of PC15 can be produced from 58.0 g of Cl₂ (and excess<br> P4)?
ludmilkaskok [199]

0.3268 moles of PC15 can be produced from 58.0 g of Cl₂ (and excess

P4)

<h3>How to calculate moles?</h3>

The balanced chemical equation is

P_{4}  + 10Cl_{2}  = 4PCl_{5}

The mass of clorine is m(Cl_{2}) = 58.0 g

The amount of clorine is n(Cl_{2}) = m(Cl_{2})/M(Cl_{2}) = 58/70.906 = 0.817 mol

The stoichiometric reaction,shows that

10 moles of Cl_{2} yield 4 moles of PCl_{5};

0.817 of Cl_{2} yield x moles of PCl_{5}

n(PCl_{5}) = 4*0.817/10 = 0.3268 mol

To know more about stoichiometric reaction, refer:

brainly.com/question/14935523

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3 0
2 years ago
Calculate the molality of a solution formed by adding 6.30 g NH4CL to 15.7 g of water
babymother [125]

Answer:

Molality = 7.5 mol/kg

Explanation:

Given data:

Mass of NH₄Cl = 6.30 g

Mass of water = 15.7 g (15.7/1000 =0.016 kg)

Molality = ?

Solution:

Formula of molality:

Molality = Moles of solute / mass of solvent in gram

Now we will first calculate the number of moles of solute( NH₄Cl )

Number of moles = mass/ molar mass

Molar mass of  NH₄Cl = 53.491 g/mol

Number of moles = 6.30 g/  53.491 g/mol

Number of moles =  0.12 mol

Now we will calculate the molality.

Molality = Moles of solute / mass of solvent in gram

Molality =  0.12 mol / 0.016 kg

Molality = 7.5 m

or        (m=mol/kg)

Molality = 7.5 mol/kg

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Answer:

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Explanation:

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(If this is correct, can I have Brainlist?)

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What do these two changes have in common? snails growing shells a slice of banana turning brown
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