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Ghella [55]
3 years ago
12

You gained two pounds while on vacation. Which of the following has changed?

Chemistry
2 answers:
Anastasy [175]3 years ago
4 0
If you are on the airplane during this trip, then ur weight changes, but the mass will stay the same. If you are home by the time the vacation is over, only your mass has changed because the gravitational pull on your body is the same as it was before, while the amount of matter inside of you is different.

Hope this helps
Elenna [48]3 years ago
3 0
I believe it is d. physical shape n particle amount (amount of particle increase if u gain weight right?), weight directly proportional to mass..
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Help in chem please!!!!!!
IgorLugansk [536]

This is a one-step unit analysis problem.  Since we are staying in moles, grams of our compound, and thus molar mass, is not needed.

1 mole is equal to 6.022x10²³ particles as given, so:

1.5x10^{24} particles FeO_{2} (\frac{1mol}{6.022x10^{23}particles } )=2.49 molFeO_{2}

<h3>Answer:</h3>

2.49 mol

Let me know if you have any questions.

3 0
3 years ago
How many moles of oxygen are required to produce 37.15 g CO2? 37.15 g CO2 = mol O2
NNADVOKAT [17]

Answer:

0.84 moles of oxygen are required.

Explanation:

Given data:

Mass of CO₂ produced = 37.15 g

Number of moles of oxygen = ?

Solution:

Chemical equation:

C + O₂     →     CO₂

Number of moles of  CO₂:

Number of moles = mass/molar mass

Number of moles = 37.15 g/ 44 g/mol

Number of moles = 0.84 mol

Now we will compare the moles of oxygen and carbon dioxide.

                          CO₂         :       O₂  

                              1           :         1

                            0.84       :       0.84

0.84 moles of oxygen are required.

6 0
3 years ago
Read 2 more answers
How would your experimental formula of magnesium chloride “MgClx” have been affected if
aksik [14]
The compound is used in medicine as a source of magnesium ions, which are essential for many cellular activities. Magnesium chloride has also been used as a cathartic and in alloys. To low
6 0
3 years ago
You have two solid substances that look the same. What measurements would you take and which tests would you preform to determin
ASHA 777 [7]

Answer:

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5 0
2 years ago
Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(1)<br> How many moles of iron can be made from 3 moles of Fe2O3?
enot [183]

<em>ANSWER - 6 MOLES OF </em><em>IRON</em>

Fe2O3(s) + 3H2(g) → 2Fe(s) + 3H2O(1)

One moles of Fe2O3 forming 2 moles of Fe

3 moles of Fe2O3 will form 2×3 = 6 moles of iron

8 0
2 years ago
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