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2 years ago

How many moles of oxygen atoms are present in 3 moles of sulfur dioxide?

2 answers:

6 0

There are two moles of oxygen in one mole of sulfur dioxide, hence the molecular formula being SO2. Therefore, the number of oxygen moles will be double the number of moles of sulfur dioxide.

3 moles SO2 * (2 moles O)/(1 mole SO2) = 6 moles Oxygen atoms

hammer [34]2 years ago

4 0

Answer: 6moles of oxygen

Explanation:

The chemical formula for sulphurdioxide is SO2.

3 moles of sulphurdioxide will be 3SO2.

In sulphurdioxide, there is presence of 2 atoms of oxygen (O2). Therefore to get the total number of moles of oxygen in 3moles of SO2, we will multiply the number of atom of oxygen present (2) with the number of moles of SO2 compound (3).

That will be equivalent to 2×3 = 6moles of oxygen.

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What does the mass of an object depend on?

Svetllana [295]

Answer:

D or the 4th one

Explanation:

mass is literally the measure of matter in an object which is essentially the weight or how much stuff there is.

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3 years ago

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How does atomic mass differ from atomic number

Lina20 [59]

The atomic mass is the average mass of all the isotopes. The atomic number is the number of protons in the nucleus of an atom. In an uncharged atom the atomic number is also equal to the number of electrons.

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3 years ago

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A student performed a chemical reaction in which 35 grams of hydrogen and 65 grams of oxygen reacted to form water. What is the

sergejj [24]

Answer:

The mass of the product is 73,06 g

Explanation:

The reaction to form water is:

2H2 + O2 ---> 2H2O

35 g 65 g

Molar mass H2 = 2g/m ---> I have 17,5 moles (35g / 2 g/m)

Molar mass O2 = 32g/m ---> I have 2,03 moles (65g / 32g/m)

2 moles of H2 __reacts with __ 1 mol O2

17,5 moles of H2 __ reacts with ___ (17,5 m . 1 m) / 2 m = 8,75 m

I have just 2,03 m of O2 and I need 8,75 m so O2 is my limiting reagent

1 mol of O2 ___ reacts with 2 moles H2

2,03 moles of O2 __ reacts with (2,03 m . 2 m) / 1 m = 4,06 m

I have 17,5 moles of H2 and I need 4,06 m. H2 is my excess reagent

<u><em>"All operations are done with the limiting reagent"</em></u>

1 mol O2 are required____ to form 2 H2O

2,03 mol O2 are required __ to form (2,03m . 2m) / 1m = 4,06 m

Molar mass of water: 18 g/m

Mass of water ----> Molar mass . Moles water = 18 g/m . 4,06 m = 73,08g

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3 years ago

Which of these things would you expect to have cells with both mitochondria

Allushta [10]

Answer:

D. Grass

Explanation:

Every living organism must contain one or more cells to be considered "living". Each cell, however, contains certain structures that perform specific roles called ORGANELLES. These organelles are of different types and hence, perform different tasks. For example, mitochondria is the power house of a cell i.e. site of energy production, and hence, is found in every eukaryotic cell.

On the other hand, chloroplast is an organelle designed to perform photosynthesis, which only occurs in plant cells. Since only plant cells can undergo photosynthesis, only plant cells can contain chloroplast. Hence, according to this question, GRASS as a type of plant is an organism that will contain both mitochondria and chloroplast in its cells.

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2 years ago

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zepelin [54]

Answer:

Explanation:

In the example, the amount of hydrogen is 202,650 x 0.025 / 293.15 x 8.314472 = 2.078 moles. Use the mass of the hydrogen gas to calculate the gas moles directly; divide the hydrogen weight by its molar mass of 2 g/mole. For example, 250 grams (g) of the hydrogen gas corresponds to 250 g / 2 g/mole = 125 moles.

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3 years ago