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3 years ago

The law of original horizontality explains:

Chemistry

1 answer:

iren [92.7K]3 years ago

4 0

why rock layers are always flat

Explanation:

The law of original horizontality helps to explain why rock layers are laid flat in a deposition basin.

The law states that "sedimentary rocks are laid down flat horizontally and they spread out in the basin of deposition".

If this flatness of deposition order is distorted, we can be very sure the a deformation must have taken place.

learn more:

Sedimentary rocks brainly.com/question/9131992

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You have 16.0 g of some compound and you perform an experiment to remove all of the oxygen, 11.2 g of iron is left. What is the

oksian1 [2.3K]

The empirical formula of this compound is equal to $Fe_{2}O_3$ .

<h3>Empirical formula</h3>

To calculate the empirical formula of a compound, it is necessary to know the number of moles present.

Therefore, we will use the molar mass of iron and oxygen to find the amount of moles, so that:

$MM_O = 16g/mol\\MM_Fe = 55.8g/mol$

$MM = \frac{m}{mol}$

Oxygen

$16 = \frac{4.8}{mol}$

$mol = 0.3$

Iron

$55.8 = \frac{11.2}{mol}$

$mol = 0.2$

Finally, as the empirical formula is composed of integers numbers of moles, just multiply the values by the smallest common factor to transform into an integer, so that:

O => $0.3 \times 10 = 3moles$

Fe => $0.2 \times 10 = 2moles$

So, the empirical formula of this compound is equal to $Fe_{2}O_3$

Learn more about empirical formula in: brainly.com/question/1363167

6 0

3 years ago

Please help! I don’t think my answer is right!

Ostrovityanka [42]

Answer:

Thats right! Gj!

Explanation:

4 0

3 years ago

Read 2 more answers

A mixture of helium, neon, and xenon gases is made with the same mass of each gas. Which (if any) gas will have the highest part

Darya [45]

Answer:

Xe will have the highest partial pressure

Explanation:

Using Dalton's law of partial pressures for ideal gases

p=P*x

where

p= partial pressure , P= total pressure and x = mole fraction = n / ∑n

since the number of moles is related with mass through

n= m/M

where

m= mass and M= molecular weight

then if m is the same for all the gases

x = m*M/ ∑ (m*M) = m*M/ m∑ M = M/∑ M

thus

p=P*x = P*M/ ∑ M

for the 3 gases

p₁=P*x₁ = P*M₁/ (M₁+M₂+M₃)

p₂=P*x₃ = P*M₂/ (M₁+M₂+M₃)

p₂=P*x₃ = P*M₃/ (M₁+M₂+M₃)

then for gasses under the same pressure (P=constant) and same mass (m=constant) , p is higher when the molecular weight is higher . Therefore Xe will have the highest partial pressure

5 0

4 years ago

Read 2 more answers

Which of the following is a polyatomic ion?<br> O A N₂<br> B. HCl<br> O C. S2<br> O D. PO43-

Alla [95]

Answer:

The answer is D..i.e phosphate. it consists of 1p and 4oxygen atoms

3 0

3 years ago

Which sample is a pure substance

Arte-miy333 [17]

Answer: container of zinc and oxygen

Hope this helps!

Explanation: edgenuity

4 0

3 years ago