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MariettaO [177]
3 years ago
6

Why does a buoyant force act on every object in a fluid

Chemistry
1 answer:
melamori03 [73]3 years ago
5 0

Well when an object floats, a force pushes up on the object. The force then acts against the downward force of gravity. Which is called the buoyant force.( 8.8.c) The buoyant force on an object in a fluid is an upward force equal to the weight of the fluid the object has displaced.

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Difference between Rapid and spontaneous composition​
Over [174]

Answer:

<em><u>spontaneous composition</u></em> is the ingnition

of the substance due to the repid oxidation of its on material.

There is no requirement of heat of external sources.

<em><u>Rapid composition</u></em> on the other hand release large amount of heat and light energy.

Explosion and the firecracker is the best example of Rapid composition.

3 0
4 years ago
Please help fast. I will give brainliest.
Sonbull [250]

Answer:39 min

Explanation:

5 0
3 years ago
Using the phase diagram for CO,, what phase is carbon dioxide in at 12 atm
Ksju [112]

Answer:liquid

Explanation:

7 0
4 years ago
Fictitious element X has an a average atomic mass of 254.9 and only 2 isotopes, One of its isotopes has an abundance of 72.00 an
elena-14-01-66 [18.8K]

Answer:

265.2amu

Explanation:

Given parameters:

Atomic mass  = 254.9amu

Abundance of isotope 1 = 72%

Atomic mass of isotope 1  = 250.9amu

Abundance of isotope 2  = 100  - 72  = 28%

Unknown:

Atomic mass of isotope 2 = ?

Solution:

To find the atomic mass of isotope 2, use the expression below:

Atomic mass = (abundance of isotope 1 x atomic mass of isotope 1) + (abundance of isotope 2 x atomic mass of isotope 2)

 Now insert the parameters and find the unknown;

  254.9  = (0.72 x 250.9)  + (0.28 x Atomic mass of isotope 2)

 254.9  = 180.648 + 0.28x atomic mass of isotope 2

 254.9 - 180.648  = 0.28x atomic mass of isotope 2

    74.25  = 0.28 x atomic mass of isotope 2

    Atomic mass of isotope 2 = 265.2amu

8 0
3 years ago
Will mark Brainlest ( molecular weight of ammonium sulphate)<br>step by step​
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Answer:

132 amu

Explanation:

ammonium sulphate is (NH_4)_{2} SO_4

to calculate molecular weight we need

atomic weight of the element of the compound

here ammonium sulphate is formed by two elements

2 nitrogen , 8 hydrogen , 1 sulphur amd 4 oxygen

atonomic number of nirogen is 14 , hydrogen is 1 , sulphur has 32 and oxygen has 16

so lets calculate molecular weight of ammonium sulphate

2*14 + 8*1 + 1*32 + 4*16

28 + 8 + 32 + 64

132 amu

3 0
3 years ago
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