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ladessa [460]
3 years ago
8

Describe a way to separate iron filings from sand. Enter your answer in the space provided.

Chemistry
2 answers:
lisov135 [29]3 years ago
8 0
You can use a magnet to separate the iron from the sand. You can separate them because they are a mixture.
Lina20 [59]3 years ago
5 0
Use the magnetic force of iron filings
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Find the equation of directrix of the parabola is given by 64x equals to -ySquare ​
ANEK [815]

Answer:

Given equation of parabola is

and

2

=64x ......(i)

The point at which the tangent to the curve is parallel to the line is the nearest point on the curve.

On differentiating both sides of equation (i), we get

2 y

dx

d y

=64

⇒

dx

d y

=

and

32

Also, slope of the given line is −

3

4

∴−

3

4

=

and

32

⇒and=−24

From equation (i), (−24)

2

=64x⇒x=9

∴ the required point is (9,−24)

Explanation:

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5 0
3 years ago
Which atom has the least attraction for the electrons in a bond between that atom and an atom of hydrogen?
Helga [31]

Answer:

carbon

Explanation:

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8 0
3 years ago
What types of chemical<br> reactions can change a toxic<br> chemical into one that is less<br> toxic
Masteriza [31]

Answer:

Very toxic materials are substances that may cause significant harm or even death to an individual if even very small amounts enter the body.There are a number of very toxic materials that may be used in workplaces. Some examples include carbon monoxide, hydrogen sulfide, chlorine and sodium cyanide

Explanation:

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8 0
2 years ago
How many hydrogen atoms are found in the<br> hydrate (NH4)3PO4.5H2O?
igomit [66]

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