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2 years ago

6th Grade Science question on Mass, Volume, and Density!! I've tried and tried and I can't figure it out!

Chemistry

1 answer:

Sonbull [250]2 years ago

8 0

If you want to find density, do mass divided by the volume and there’s your answer!

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Prokaryotic is an example of a/an- A:tissue B:cell type C:organ D:organism

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Answer:

B. Cell Type

Explanation:

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3 years ago

Read 2 more answers

A student submits the following work on the mass number, but he has made a few mistakes. Select the sentences that are incorrect

rewona [7]

Answer

Calculating the mass number for an atom requires that we know the atomic number and the number of protons in the atom’s nucleus. The mass number then gives us the average weight of atoms of a given element. However, as long as the number of protons equals the number of neutrons, the values balance out and we always obtain a whole number for the mass number.

Explanation:

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3 years ago

Balance the equation. SiO2 + CaC2 → Si + CaO + CO2

Sunny_sXe [5.5K]

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2 years ago

A 29.7 g sample of iron ore is treated as follows. The iron in the sample is all converted by a series of chemical reactions to

Softa [21]

Answer: The mass of iron in the ore is 10.9 g

Explanation:

We are given:

Mass of iron (III) oxide = 15.6 g

We know that:

Molar mass of Iron (III) oxide = 159.69 g/mol

Molar mass of iron atom = 55.85 g/mol

As, all the iron in the ore is converted to iron (III) oxide. So, the mass of iron in iron (III) oxide will be equal to the mass of iron present in the ore.

To calculate the mass of iron in given mass of iron (III) oxide, we apply unitary method:

In 159.69 g of iron (III) oxide, mass of iron present is $(2\times 55.85)=111.7g$

So, in 15.6 g of iron (III) oxide, mass of iron present will be = $\frac{111.7g}{159.69g}\times 15.6g=10.9g$

Hence, the mass of iron in the ore is 10.9 g

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3 years ago

\hy carbon used to reduce the oxide of aluminium to get the metal?

irga5000 [103]

___________________________________________________

Carbon is used to reduce the oxide of aluminium to get the metal, in case condensation happens during this process.

___________________________________________________

Hope this helps!

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2 years ago

6th Grade Science question on Mass, Volume, and Density!! I've tried and tried and I can't figure it out!​

6th Grade Science question on Mass, Volume, and Density!! I've tried and tried and I can't figure it out!