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Levart [38]
3 years ago
12

Why do some objects float why others sink

Chemistry
2 answers:
Goshia [24]3 years ago
5 0
It will sink. This means whether or not an object will float or sink depends on its own density and the density of the liquid it is placed in. In the case of water, an object with a density less than 1 g/cm3 will float. The closer its density is to 1 g/cm3, the more of it will sit below the water level.
Leona [35]3 years ago
4 0
Because so objects are denser than water and some are less dense than water
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Which is true about models in science
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Models in science help you get the idea of what something looks like that's why your teacher may ask you to draw a diagram to help you remember what the object looks like. Hope this helps.
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3 years ago
Given the partial equation: NO3− Pb2 → NO2 Pb4 , balance the reaction in acidic solution using the half-reaction method and fill
Fed [463]

Answer : The balanced reaction in acidic solution is,

2NO_3^-+1Pb^{2+}+4H^+\rightarrow 2NO_2+1Pb^{4+}+2H_2O

Explanation :

The given partial equation is,

NO_3^-+Pb^{2+}\rightarrow NO_2+Pb^{4+}

First we have to separate into half reaction. The two half reactions are:

NO_3^-\rightarrow NO_2

Pb^{2+}\rightarrow Pb^{4+}

Now we have to balance the half reactions in acidic medium, we get:

NO_3^-+2H^++1e^-\rightarrow NO_2+H_2O       ............(1)

Pb^{2+}\rightarrow Pb^{4+}+2e^-     ............(2)

Now we have to balance the electrons of the half reactions. When we are multiplying the equation (1) by 2, we get

2NO_3^-+4H^++2e^-\rightarrow 2NO_2+2H_2O  ...........(3)

Now we have to add both the half reactions (2) and (3), we get the final balanced chemical reaction.

2NO_3^-+1Pb^{2+}+4H^+\rightarrow 2NO_2+1Pb^{4+}+2H_2O

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3 years ago
A am por you are to jejefwe
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Wowww this is cool did you draw this?

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5 0
3 years ago
What is 165 lb in kilograms (kg)?<br> 1 kg = 2.20 lb<br> (please show work) ASAP
Slav-nsk [51]
165 Pounds (lbs) = 74.84 Kilograms (kg)
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3 years ago
I need help with this
Ganezh [65]
1. 26
2. 115
THIS IS TO REACH 20 CHARACTERS
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2 years ago
Read 2 more answers
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