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3 years ago

The product side of a chemical reaction is shown.

Chemistry

1 answer:

stealth61 [152]3 years ago

6 0

Answer:

Explanation:

The coefficient is the number in front of the chemical symbol.

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What happens to the potential energy of a book that is dropped from a desk to the floor?

Debora [2.8K]

Answer:

D. It is converted into kinetic energy.

Explanation:

When a book is dropped from a desk to the floor, the potential energy of the book is converted to kinetic energy as it falls.

Potential energy of a body is the energy due to the position of the body.
At a particular height, the potential energy is maximum.
A body with mass and moving with velocity will have kinetic energy
As the book drops through the height, to conserve energy, the potential energy is converted to kinetic energy.

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3 years ago

If 3.75 moles of aluminum react, how many moles of sulfur are needed?

aliya0001 [1]

Answer:(A) 0.70 mol

Explanation:

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3 years ago

The seeds of a dandelion are wispy and very light. A single dandelion produces many seeds. How does the structure of the seeds r

solmaris [256]

Answer:

the answer will be number...D

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3 years ago

Please help... ......

viktelen [127]

The liquid particles would have moved randomly because of the increase in thermal energy. They would move randomly and would be floating in the bottle moving randomly. The liquid would turn into gas form. Meaning that you would have water particles floating in the bottle moving randomly.

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4 years ago

If a 7.0 mL sample of vinegar was titrated to the stoichiometric equivalence point with 7.5 mL of 1.5M NaOH, what is the mass pe

NNADVOKAT [17]

First we need to calculate the number of moles of NaOH titrated.

molar concentration = number of moles / solution volume (liter)

number of moles = molar concentration × solution volume

number of moles of NaOH = 1.5 × 0.0075 = 0.01125 moles

Then we look at the chemical reaction:

CH $_{3}$ -COOH + NaOH = CH $_{3}$ COONa + H $_{2}$ O

We can see that 1 mole of acetic acid is reacting with one mole of sodium hydroxide. Then we can conclude that 0.01125 moles of sodium hydroxide reacts with 0.01125 moles of acetic acid.

Now we can get the mass of acetic acid:

number of moles = mass (grams) / molecular mass (g/mol)

mass = number of moles × molecular mass

mass of acetic acid = 0,01125 × 60 = 0.675 g

We assume that the density of the vinegar = 1 g/mL, so the mass percent of acetic acid is:

concentration of acetic acid = (mass of acetic acid / mass of vinegar) × 100

concentration of acetic acid = (0.674 / 7) × 100 = 9.6 %

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3 years ago