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4 years ago

How does the behavior of the water molecules change as the pan of water is heated?

1 answer:

5 0

The behavior of the water molecules change as the pan of water is heated, As the water is heated, the water molecules move faster and farther apart. The molecules change as the water is heated and the water molecules move faster and farther.<span>
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How many moles of silver atoms are in 1.8 x 10^-21 atoms of silver?

rodikova [14]

Hola!

We know,
1 Mole of anything has 6.02 × $10^{-23}$ particles

According to Question,

6.02 × $10^{-23}$ = 1 Mole

Thus,

1.8 × $10^{-21}$ / 6.02 × $10^{-23}$ = 0.33 Moles

hope it helps!

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4 years ago

A) release of toxic gas

faust18 [17]

In my opinion the answer is D

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4 years ago

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When hydronium and hydroxide neutralize each other as they react in equal amounts, what is true of their molarities? A. Their mo

Fed [463]

A. Their molarities are equal.

H₃O⁺ + OH⁻ → 2H₂O

1:1

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3 years ago

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What is the molar mass for 5 mol Na

zimovet [89]

Answer:

22.98977 g/

Brainliest please

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3 years ago

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Calculate the number of particles in a 0.75 gram sample of Calcium Nitrate; Ca(NO3)2

kkurt [141]

The number of particles : 2.75 x 10²¹

<h3>Further explanation </h3>

A mole is a unit of many particles (atoms, molecules, ions) where 1 mole is the number of particles contained in a substance that is the same amount as many atoms in 12 gr C-12

1 mole = 6.02.10²³ particles

$\tt n=\dfrac{N}{N_o}$

N = number of particles

No = Avogadro number (6.02.10²³)

n = number of moles

While the number of moles can also be obtained by dividing the mass (in grams) with the molar mass of element or molecule

0.75 gram sample of Calcium Nitrate; Ca(NO₃)₂

MW of Ca(NO₃)₂ : 164.09 g/mol

$\tt mol~Ca(NO_3)_2=\dfrac{0.75}{164.09}=0.00457$

The number of particles

$\tt N=n\times N_o\\\\N=0.00457\times 6.02\times 10^{23}=2.75\times 10^{21}$

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3 years ago