2 years ago

1 2. How does a detergent remove a stain? ?

Chemistry

1 answer:

Masteriza [31]2 years ago

4 0

Answer:

By using various chemical compounds to lift the stain while being gentle enough to keep fabric intact.

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A sample weighing 3.110 g is a mixture of Fe 2 O 3 (molar mass = 159.69 g/mol) and Al 2 O 3 (molar mass = 101.96 g/mol). When he

grandymaker [24]

Answer:

The mass fraction of ferric oxide in the original sample : $\frac{723}{3110}$

Explanation:

Mass of the mixture = 3.110 g

Mass of $Fe_2O_3=x$

Mass of $Al_2O_3=y$

After heating the mixture it allowed to react with hydrogen gas in which all the ferric oxide reacted to form metallic iron and water vapors where as aluminum oxide did not react.

$Fe_2O_3(s)+3H_2(g)\rightarrow 2Fe(s)+3H_2O(g)$

Mass of mixture left after all the ferric oxide has reacted = 2.387 g

Mass of mixture left after all the ferric oxide has reacted = y

$x=3.110 g- y=3.110 g - 2.387 g = 0.723 g$

The mass fraction of ferric oxide in the original sample :

$\frac{0.723 g}{3.110 g}=\frac{723}{3110}$

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3 years ago

An evil villain wants to broadcast a message to everyone on Earth. They are using satellites for the communication process. For

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Uhhhhhhh maybe the answer is 3

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1 year ago

Express the pressure 545 mm Hg in kilopascals.

Arlecino [84]

545mm Hg in Kilopascals is 72.6607

I hope this helps you. Good luck stay safe, healthy and, happy!<3

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2 years ago

What are two examples of homogeneous

Andrei [34K]

Answer:

two examples are blood and soapy water.

Explanation:

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2 years ago

6) Which of these elements is a metal? E) C D) N A) O C) Ne B) Ca

sertanlavr [38]

Answer:

Explanation:

It is on the left side of the periodic table where metals are located.

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3 years ago

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