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wolverine [178]
3 years ago
15

Whitch statemeant correctly describes a physical change.

Chemistry
2 answers:
lukranit [14]3 years ago
4 0
Answer:
The answer is B
Yuliya22 [10]3 years ago
3 0
The answer is B ( and all your gonna do now is freak the freak out)
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Andreyy89
The reaction rate is the speed at which products form, based on the rate of the slowest step in the mechanism.
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There are 8.6 x 1025 atoms in a block of Tin (Sn). How many moles is the block of Tin?
zysi [14]

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142.8096978mol

Explanation:

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2 years ago
Which is the frequency of the wave shown?
ratelena [41]

Answer:

The frequency of wave is 0.125 Hz.

Explanation:

Frequency:

"It is an event repeat itself in a given period of time"

The unit of frequency is the Hz . If time is measured in seconds then frequency will be in Hz. Hz is equal to the per second.

Formula:

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3 years ago
What can u say about the sizes of all the atoms in a piece of carbon​
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4 0
2 years ago
Calculate the weight of 3.491 into 10 to the power 19 molecules of cl2​
Rom4ik [11]

Answer:

The mass of 3.491 × 10¹⁹ molecules of Cl₂  of Cl₂ is 4.11 × 10⁻³ grams

Explanation:

The number of particles in one mole of a substance id=s given by the Avogadro's number which is approximately 6.023 × 10²³ particles

Therefore, we have;

One mole of Cl₂ gas, which is a compound, contains 6.023 × 10²³ individual molecules of Cl₂

3.491 × 10¹⁹ molecules of Cl₂ is equivalent to (3.491 × 10¹⁹)/(6.023 × 10²³) = 5.796 × 10⁻⁵ moles of Cl₂

The mass of one mole of Cl₂ = 70.906 g/mol

The mass of 5.796 × 10⁻⁵ moles of Cl₂ = 70.906 × 5.796 × 10^(-5) = 4.11 × 10⁻³ grams

Therefore;

The mass of 3.491 × 10¹⁹ molecules of Cl₂  of Cl₂ = 4.11 × 10⁻³ grams.

4 0
3 years ago
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