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SCORPION-xisa [38]
2 years ago
12

You have a new box of breakfast cereal that contains cereal bits and fluffy marshmallows bits. your brother shakes the box and t

hen pours himself a bowl of marshmallows bits, leaving you with a bowl of only cereal bits. what form of separation technique did he undertake? what property does this separation technique depend on?
Chemistry
2 answers:
Tom [10]2 years ago
5 0
This is the process of sieving, in which the heavier particles settle at the bottom and the lighter ones are retained at the top.
LenKa [72]2 years ago
5 0
The separation technique is called sieving. The separation technique depends on the different particle size of the cereal bits and marshmallow bits. <span />
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Which of the following is a valid conversion factor?
VMariaS [17]

Answer:

100 cg/1g

Step-by-step explanation:

    1 cg = 0.01 g     Multiply by 100

100 cg = 1 g

(a) is <em>wrong</em>. The correct conversion factor is 1000 cm³/1 L.

(b) is <em>wrong</em>. The correct conversion factor is 1000 mL/1 L.

(c) is <em>wrong</em>. The correct conversion factor is 1 m/10 dm.

7 0
2 years ago
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Three solutions contain a certain acid. The first contains 10% acid, the second 30%, and the third 50%. A chemist wishes to use
Fittoniya [83]

Answer:

To prepare 50L of 32% solution you need: 11L of 30% solution, 22L of 50% solution and 17L of 10% solution.

Explanation:

A 32% solution of acid means 32L of acid per 100L of solution. As the chemist wants to make a solution using twice as much of the 50% solution as of the 30% solution it is possible to write:

2x*50% + x*30% + y*10% = 50L*32%

<em>130x + 10y = 1600 </em><em>(1)</em>

<em>-Where x are volume of 30% solution, 2x volume of 50% solution and y volume of 10% solution-</em>

Also, it is possible to write a formula using the total volume (50L), thus:

<em>2x + x +y = 50L</em>

<em>3x + y = 50L </em><em>(2)</em>

If you replace (2) in (1):

130x + 10(50-3x) = 1600

100x + 500 = 1600

100x = 1100

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2x = 22L -Volume of 50% solution-

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I hope it helps!

8 0
2 years ago
A molecule of antifreeze, ethylene glycol, has the formula c2h4(oh)2. how many atoms are there in one molecule of antifreeze?
kifflom [539]
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One molecule of ethylene glycol (C₂H₄(OH)₂) has two carbon atoms, six hydrogen atoms (4 + 2 · 1) and two oxygen atoms (2 · 1). So there are:
2 + 6 + 2 = 10 atoms.
Ethylene glycol (C₂H₄(OH)₂) is an odorless, sweet-tasting, colorless viscous liquid.
5 0
2 years ago
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How quickly must non-frozen ready-to-eat foods be consumed?
Alexxandr [17]

Answer:

i believe 24 hours

Explanation:

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Readme [11.4K]

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