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Luda [366]
3 years ago
9

Why an astrononouts weight is different on the moon than it is on earth

Chemistry
2 answers:
Lady bird [3.3K]3 years ago
6 0

Answer:

the moon has  less mass than earth. the gravitational pull on the moon is less than it is on earth, resulting in a person weighing less on the moon

Explanation:

11111nata11111 [884]3 years ago
5 0

Answer:

hi

Explanation:

because there is weightless and if gravitation increase then mass increase

so gravitational attraction is less on the moon than the earth

it is why their weight is different

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Rusting of iron is a very common chemical reaction. It results in one form from Fe reacting with oxygen gas to produce iron (III
Vlada [557]

<u>Answer:</u> The given amount of iron reacts with 9.0 moles of O_2 and produce 6.0 moles of Fe_2O_3

<u>Explanation:</u>

We are given:

Moles of iron = 12.0 moles

The chemical equation for the rusting of iron follows:

4Fe+3O_2\rightarrow 2Fe_2O_3

  • <u>For oxygen gas:</u>

By Stoichiometry of the reaction:

4 moles of iron reacts with 3 moles of oxygen gas

So, 12.0 moles of iron will react with = \frac{3}{4}\times 12.0=9.0mol of oxygen gas

  • <u>For iron (III) oxide:</u>

By Stoichiometry of the reaction:

4 moles of iron produces 2 moles of iron (III) oxide

So, 12.0 moles of iron will produce = \frac{2}{4}\times 12.0=6.0mol of iron (III) oxide

Hence, the given amount of iron reacts with 9.0 moles of O_2 and produce 6.0 moles of Fe_2O_3

5 0
3 years ago
An element is made up from ?
sertanlavr [38]

Answer:

Atoms

Explanation:

Elements are the chemical combinations of two or more atoms of the same kind

4 0
4 years ago
Read 2 more answers
If we mix 25 grams of sodium bromide with a large amount of potassium chloride, what will our theoretical yield of sodium chlori
erik [133]

Answer:

Theoretical yield of sodium chloride = 14.04 g

Explanation:

Given data:

Mass of sodium bromide = 25 g

Theoretical yield of sodium chloride = ?

Solution:

Chemical equation:

NaBr + KCl  → NaCl  + KBr

Number of moles sodium bromide:

Number of moles = Mass /molar mass

Number of moles = 25.0 g / 102.9 g/mol

Number of moles = 0.24 mol

Now we will compare the moles of NaCl with NaBr  .

                  NaBr         :               NaCl

                    1               :               1

                 0.24           :            0.24

Theoretical yield of sodium chloride:            

Mass  = moles × molar mass

Mass = 0.24 mol ×  58.5 g/mol

Mass =  14.04 g

7 0
3 years ago
Science question pleace answer!!
mylen [45]

Answer:

the humidity 80% at the temperature (20° C ) will have more water vapour because relative humidity is more at lesser temperature (20° C) and lower at higher temperature (40°C )

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3 years ago
Why is a chemical indicator added to the flask in which a titration will occur
Aloiza [94]
The indicator is added to determine the end of reaction.
4 0
3 years ago
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