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3 years ago

“How have formulas helped us understand compound structure and its behavior?”

1 answer:

3 0

Hello there!

Formulas have helped us understand the compound structure and its behavior by letting us know the exact composition of a molecule.

Different atoms have different properties, also, a different arrangement of atoms lead to different geometrical shapes. To understand compound structure and behavior it is necessary to know which atoms are in the molecule and how are they arranged. These two pieces of information can be obtained from the Chemical Formula, which tells us precisely the atoms and the proportions of each one in a given compound.

Have a nice day!

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What kind of ions do acids release when dissolved in water?

RSB [31]

Virtually all acids release hydrogen ions (or protons) in the water

4 0

3 years ago

An atom of boron has an atomic number of 5 and an atomic mass of 11. The atom contains

Liono4ka [1.6K]

Answer:

5 protons, 5 electrons, and 6 neutrons

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3 years ago

Ethane, C2H6, burns in oxygen. First write a balanced equation for this combustion reaction. What mass of oxygen, in grams, is r

iren [92.7K]

Answer:

We need 50.6 grams of oxygen

Explanation:

Step 1: Data given

Mass of ethane = 13.6 grams

Molar mass of ethane = 30.07 g/mol

Step 2: The balanced equation

2C2H6 + 7O2 → 4CO2 + 6H2O

Step 3: Calculate moles ethane

Moles ethane = mass ethane / molar mass ethane

Moles ethane = 13.6 grams / 30.07 g/mol

Moles ethane = 0.452 moles

Step 4: Calculate moles oxygen

For 2 moles ethane we need 7 moles O2 to produce 4 moles CO2 and 6 moles H2O

For 0.452 moles ethane we need 3.5*0.452 = 1.582 moles O2

Step 5: Calculate mass O2

Mass O2 = moles O2 * molar mass O2

Mass O2 = 1.582 moles * 32.0 g/mol

Mass O2 = 50.6 grams

We need 50.6 grams of oxygen

7 0

3 years ago

Which description accurately represents a water molecule

inna [77]

Answer:

The water molecule is comprised of two hydrogen (H) atoms and one oxygen atom, oxygen atom has 8 electrons, and each H has 1 electron. The H atoms bond to the oxygen by sharing a pair of electrons in what is called a covalent bond. In each pair of shared electrons, one electron is contributed by the H (black) and one from the oxygen (red).

Explanation:

have a great day and please mark brainliest

4 0

2 years ago

When hydrogen sulfide reacts with oxygen, water and sulfur dioxide are produced. The balanced equation for this reaction is:

VMariaS [17]

Answer:

2H2S + 3O2 → 2SO2 + 2H2O

Explanation:

Step 1: Data given

Hydrogen sulfide = H2S

Oxygen = O2

sulfur dioxide = SO2

water = H2O

Step 2: The unbalanced equation

H2S + O2 → SO2 + H2O

Step 3: Balancing the equation

H2S + O2 → SO2 + H2O

On the left side we have 2x O (in O2) and on the right side we have 3x O (2x in SO2 and 1x in H2O). To balance the amount of O, we have to multiply O2 (on the left side) by 3 and SO2 and H2O on the right side by 3.

H2S + 3O2 → 2SO2 + 2H2O

On the right side we have 4x H and on the left side we have 2x H. To balance the amount of H, we have to multiply H2S by 2.

Now the equation is balanced.

2H2S + 3O2 → 2SO2 + 2H2O

7 0

3 years ago