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kondaur [170]
3 years ago
6

Uranium in the isotope below had 140 nutrons​

Chemistry
1 answer:
Brut [27]3 years ago
4 0

Answer:

It has 140 neutrons because Mass number= No of protons + no of neutrons

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How are the three beams on a triple beam balance different
FinnZ [79.3K]
The three beams on a triple beam balance all are different. Each beam should have a differnet unit of measurement. For example, one beam may count in 100's and the other beam may count in 10's and the last beam may count in 1's.
4 0
3 years ago
A hot air balloon starts with its temperature at 68.7°C and a pressure of 0.987 ATM and volume of 564L at what temperature in de
ICE Princess25 [194]

Answer:

54.7°C is the new temperature

Explanation:

We combine the Ideal Gases Law equation to solve this.

P . V = n. R. T

As moles the balloon does not change and R is a constant, we can think this relation between the two situations:

P₁ . V₁ / T₁ = P₂ . V₂ / T₂

T° is absolute temperature (T°C + 273)

68.7°C + 273 = 341.7K

(0.987 atm . 564L) / 341.7K = (0.852 atm . 625L) / T₂

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3 0
3 years ago
As a temperature of Lava increases, ___________.
levacccp [35]
B its viscosity decreases
3 0
3 years ago
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knowing that the reaction of potassium in water is extremely exothermic, what would be the problem with adding a large piece of
anygoal [31]

Answer:

Explanation:

If the reaction is really exothermic (and it is) then the water would spatter all over the place. It would boil off if the container could hold it. It would also react according to the following reaction.

You are talking about a reaction like

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2 years ago
A cube made of an unknown material has a height of 9 cm. The mass of this cube is 3,645 grams.
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v=9*9*9=729 ml

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