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3 years ago

Bromine has an atomic number of 35. How many protons are in an atom of bromine? 17 18 35 52

Chemistry

1 answer:

tamaranim1 [39]3 years ago

8 0

Answer:

There are 35 protons in a single atom of Bromine

Explanation:

The atomic number of an element represents the number of protons contained in the nucleus of the atom! Thus, since Bromine's atomic number is 35, that means there are 35 protons!

Hope this helps! :)

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Answer:

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3 years ago

What is happening to the temperature/pressure during the Deposition Change of State?

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4 years ago

How do I do scientific notation

lina2011 [118]

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3 years ago

A propane stove burned 470 grams propane and produced 625 grams of water (this is the actual yield) C3H8 +5O2=3CO2+4H20. What wa

Liula [17]

Answer:

81.3%

Explanation:

Step 1:

The balanced equation for the reaction:

This is shown below:

C3H8 + 5O2 —> 3CO2 + 4H2O

Step 2:

Data obtained from the question. This includes:

Mass of propane (C3H8) = 470 g

Actual yield of water (H2O) = 625 g

Percentage yield of water (H2O) =?

Step 3:

Determination of the mass of propane (C3H8) burned and the mass of water (H2O) produce from the balanced equation. This is illustrated below:

C3H8 + 5O2 —> 3CO2 + 4H2O

Molar Mass of C3H8 = (3x12) + (8x1) = 36 + 8 = 44g/mol

Molar Mass of H2O = (2x1) + 16 = 2 + 16 = 18g/mol

Mass of H2O from the balanced equation = 4 x 18 = 72g

From the balanced equation above,

44g of C3H8 was burned and 72g of H2O was produced.

Step 4:

Determination of the theoretical yield of H2O. This is illustrated below:

From the balanced equation above,

44g of C3H8 produced 72g of H2O.

Therefore, 470g of C3H8 will produce = (470x72)/44 = 769.09g of H2O.

Therefore, the theoretical yield of H2O is 769.09g

Step 5:

Determination of the percentage yield of water (H2O). This is illustrated below:

Actual yield of water (H2O) = 625g

theoretical yield of H2O = 769.09g

Percentage yield of water (H2O) =?

Percentage yield = Actual yield/Theoretical yield x100

Percentage yield = 625/769.09 x100

Percentage yield = 81.3%

Therefore, the percentage yield of water (H2O) is 81.3%

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3 years ago

Ammonia (NH3) is produced in the human body as a waste product during the digestion of protein. How many moles of N2 will be nee

Bad White [126]

Answer:

43.5

Explanation:

there are 43.5 moles of N2

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3 years ago