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iris [78.8K]
3 years ago
9

Convert 6.3x1024 molecules of water to liters.

Chemistry
1 answer:
shusha [124]3 years ago
4 0

Answer:

Convert 6.3x1024 molecules of water to liters

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Water is produced from the reaction of hydrogen and oxygen gas, according to the equation below. What is the excess reactant in
liq [111]

Explanation:

Mole ratio of Oxygen to Hydrogen gas = 1 : 2.

If we use 3.0 moles of oxygen gas, we would need 3.0 * 2 = 6.0 mol of hydrogen gas.

However we only have 4.2 mol of hydrogen. Therefore hydrogen is limiting and oxygen is in excess. (B)

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3 years ago
Two unknown compounds are tested. Compound 1 contains 15.0g of hydrogen and 120.0g of oxygen. Compound 2 contains 2.0g of hydrog
ivann1987 [24]

Answer:

The both compounds are different.

Explanation:

In order to confirm weather both compounds are same we will check the mole ration. If it is same the compounds will be same.

Given data:

For compound 1.

Mass of hydrogen = 15 g

Mass of oxygen = 120 g

Moles of hydrogen and oxygen = ?

Number of moles of hydrogen = 15 g/ 1g/mol = 15 mol

Number of moles of oxygen = 120 g/ 16 g/mol = 7.5 mol

Total number of moles = 22.5 mol

% of hydrogen = 15 /22.5 × 100 = 66.7%

% of oxygen = 7.5 / 22.5× 100 = 33.3%

For compound 2:

Mass of hydrogen = 2 g

Mass of oxygen = 32 g

Moles of hydrogen and oxygen = ?

Number of moles of hydrogen = 2 g/ 1g/mol = 2 mol

Number of moles of oxygen = 32 g/ 16 g/mol = 2 mol

Total number of moles = 4 mol

% of hydrogen = 2 /4 × 100 = 50%

% of oxygen = 2 / 4× 100 = 50%

7 0
3 years ago
Who arranged the elements according to atomic mass and used the arrangement to predict the properties of missing element?
Marina CMI [18]

Answer:

Dmitri Mendeleev

Explanation:

Dmitri Mendeleev a Russian Chemist arranged elements on the periodic table according to their atomic mass. He used this arrangement to predict some of the properties of the missing element.

  • Dmitri Mendeleev around 1869 described the periodic table.
  • The table was based on the periodic law which states that "chemical properties of elements are a periodic function of their atomic weights".
  • In the Mendeleev table, elements are arranged by atomic weights with recurring properties in a periodic manner.
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2 years ago
Which tools collect images during space exploration? Select three options.
Brut [27]

Answer:

space tools are the one ur llooking for :)

5 0
3 years ago
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Complete the drawing of the product of the diels–alder reaction, ignoring stereochemistry.
shepuryov [24]

Answer:

In Diels alder reaction

It's an Adduct that is fromed from the reactants

Explanation:

I.e diene + dienophile= Adduct

E.g 1,3-butadiene + ethene = cyclohexene

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3 years ago
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