3 years ago

Help PLEASEEEE EXTRA POINTS

Chemistry

1 answer:

AysviL [449]3 years ago

7 0

C: Z because it is the only area of land that is darkened.

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densk [106]

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A, 4,3,2

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Anna007 [38]

Delta H of solution = -Lattice Energy + Hydration
Delta H of solution=- (-730)+(-793) 
Delta H of solution= -63kJ/mol 

Now we find moles of LiI: 
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marusya05 [52]

Answer: 120N

Explanation:

Given variables are:

force needed = ?

mass of object = 60 kg

acceleration = 2.0 m/s²

Since the magnitude of force depends on the mass of the object and the acceleration by which it moves.

i.e Force = mass x acceleration

Force = 60 kg x 2.0 m/s²

Force = 120 N

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3 years ago

How many moles is in 2.52*10^24 molecules of water?

nataly862011 [7]

Hi friend
--------------
Your answer
-------------------

Water = H2O

Number of molecules in one mole of water = 6.022 × 10²³ [Avogadro's constant]

Given number of molecules = 2.52 × 10²³

So,
------

Number of moles =
$\frac{2.52 \times 10 {}^{24} }{6.022 \times 10 {}^{23} } \\ \\ = 4.184 \: (approximately)$

HOPE IT HELPS

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bixtya [17]

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