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Vsevolod [243]
3 years ago
12

What is the atomic mass of mercury?

Chemistry
2 answers:
wlad13 [49]3 years ago
8 0
The answer is 80 atomic mass
myrzilka [38]3 years ago
5 0
The atomic mass of mercury is 200.59 amu.
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What chemicals need to make liquid bakelite ?
Jet001 [13]
It begins with heating of phenol and formaldehyde in the presence of a catalyst such as hydrochloric acid, zinc chloride, or the base ammonia. This creates a liquid condensation product, referred to as Bakelite A, which is soluble in alcohol, acetone, or additional phenol.
5 0
3 years ago
How can objects all be the same size but have a different mass? *help quick*
Elodia [21]

Answer:

All objects can have the same size but have a different mass!

This is true, although it sounds fake. This is one example, there is a Neutron star, and Neutron stars are as big as a city, but they have a mass which is hundreds of times greater than our sun's mass. Because of them having so much mass, they are also having so much gravitational energy, which makes them also have gravity. They're so small, but have so much mass that they can do much. Even a drop of a neutron star can punch open the earth! It's true, so yes, it is possible for objects the SAME size to be having different masses according to that example.

But let's look on how they can have different mass.

They can have different masses becase of different densities. Put a iron ball inside water, and put an apple as close to the iron ball's side, what happens? The apple floats, becuase the apple's mass is less than the water, and the iron ball's mass is MORE than the water. So, because the iron ball is denser than the apple, that's why, it has more mass than the apple. The apple isn't much dense, it isn't as dense as water or the iron ball. But the iron ball is much more denser than the water. So because of the different material densities of the material, that's why it can have different masses.

Remember to Remember those 2 examples I gave you... (neutron star vs sun, iron ball vs apple on water)

8 0
2 years ago
Which type of substance can conduct electricity in the liquid phase but not in the solid phase and why?
Citrus2011 [14]
1) ionic compound


there should be motive ions or free movable electrons to conduct electricity. The ionic compounds in the solid state, has no motive ions or free electrons as the ions are tightly attracted to each other. But in liquid state, the ions separate and move freely.
3 0
4 years ago
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What did ancient people think of lunar eclipses
Licemer1 [7]

Explanation:

What happened to the ruler when you suddenly released it

8 0
3 years ago
52.1 mL of aqueous 0.255 M Pb(NO3)2 is mixed with 38.5 mL of 0.415 M NaCl. The equation for the precipitate reaction is: Pb(NO3)
Elan Coil [88]

Answer:

0.0585 M

Explanation:

  • Pb(NO₃)₂ (aq) + 2NaCl (aq) → PbCl₂ (s) + 2NaNO₃ (aq)

First we <u>calculate the inital number of moles of each reagent</u>, using the <em>given volumes and concentrations</em>:

  • 0.255 M Pb(NO₃)₂ * 52.1 mL = 13.3 mmol Pb(NO₃)₂
  • 0.415 M NaCl * 38.5 mL = 16.0 mmol NaCl

Then we <u>calculate how many Pb(NO₃)₂ moles reacted with 16.0 mmoles of NaCl</u>, using the <em>stoichiometric coefficients of the reaction</em>:

  • 16.0 mmol NaCl * \frac{1mmolPb(NO_3)_2}{2mmolNaCl} = 8.00 mmol Pb(NO₃)₂

Now we <u>calculate the remaining number of Pb(NO₃)₂ moles after the reaction</u>:

  • 13.3 mmol - 8.00 mmol = 5.30 mmol Pb(NO₃)₂

Finally we <em>divide the number of moles by the final volume</em> to <u>calculate the concentration</u>:

  • 5.30 mmol / (52.1 mL + 38.5 mL) = 0.0585 M
6 0
3 years ago
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