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3 years ago

If a room requires 25.4 square yards of carpeting, what is the area of the floor in units of ft2? (3 ft = 1 yd)

Chemistry

1 answer:

Gelneren [198K]3 years ago

4 0

Answer : The area of the floor in the unit of square feet is, 228.6 square feet

Explanation :

1 yard = 3 feet

Now squaring on both the side, we get

$(1yard)^2=(3feet)^2$

1 square yard = 9 square feet

As, 1 square yard = 9 square feet

As, 25.4 square yard = (9 × 25.4) = 228.6 square feet

Therefore, the area of the floor in the unit of square feet is, 228.6 square feet

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How does the structure of amino acids allow them to form a polypeptide

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<span>Amino acids which are known to be linked by peptide bonds they form polypeptide chains.

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3 years ago

Determine the percent water in MgSO4*7H20?

Semmy [17]

Answer:

$\% H_2O=51.2\%$

Explanation:

Hello!

In this case, since the percent water is computed by dividing the amount of water by the total mass of the hydrate; we infer we first need the molar mass of water and that of the hydrate as shown below:

$MM_{MgSO_4* 7H_2O}=120.36 g/mol+7*18.02g/mol\\\\MM_{MgSO_4* 7H_2O}=246.5g/mol$

Thus, the percent water is:

$\% H_2O=\frac{7*MM_{H_2O}}{MM_{MgSO_4* 7H_2O}} *100\%\\\\$

So we plug in to obtain:

$\% H_2O=\frac{7*18.02}{246.5} *100\%\\\\\% H_2O=51.2\%$

Best regards!

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2 years ago

What is the volume of an alka seltzer tablet

Delicious77 [7]

Answer:

Explanation:

Alka Seltzer tablet contains 325 mg of aspirin (acetylsalicylic acid), 1000 mg of citric acid, and 1916 mg of sodium bicarbonate. The acids originally contained in a tablet give only 17.4 mmol of H+, which is not enough to neutralize all of the sodium bicar- bonate (22.8 mmol).

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3 years ago

Read 2 more answers

What happens to the temperature and density of the material between points B and C?

makvit [3.9K]

Answer:

Temperature decreases and density increases

Explanation:

Let us remember that density of a material increases as the temperature of the material decreases. So the cooler a material becomes, the denser it becomes also.

Between points B and C, the material rapidly cools down and the temperature decreases accordingly. This ultimately results in an increase in density since cooler materials are denser than hot materials.

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3 years ago

Sandy was cooking beans for dinner and heard they cook faster if baking soda is added to the water. is adding baking soda a good

Strike441 [17]

No she should add salt to the water

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3 years ago