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3 years ago

Iron filings can be separated from a mixture with sulfur by using a magnet.

Chemistry

2 answers:

lbvjy [14]3 years ago

3 0

The answer is A. True

Diano4ka-milaya [45]3 years ago

3 0

Answer:

True

Explanation:

Mixture of sulfur and iron filings can be separated by using magnet.

Magnets attract iron. This is because when iron is exposed to magnet, the electrons of the iron begin to align in the direction of magnetic field which creates attraction between iron and magnet. This phenomenon is called magnetism.

Sulfur does not have this property and hence, do not get attracted towards magnet.

So, if magnet is brought near the mixture of iron and sulfur, the iron will attach with magnet and get separated.

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How do the differences in the polyatomic ions po3 3- and po4 3- help you determine whether each ends in -ite or -ate?

Tcecarenko [31]

There is a rule in naming polyatomic anions containing oxygen. Those names ending in –ate are given to the most common oxyanion of an element. While those names ending in –ite are for those that contains fewer O atom for the same charge. Since P $PO_{3} ^{3-}$ has fewer O atoms, its name ends in –ite. Thus, P $PO_{3} ^{3-}$ is phosphite while P $PO_{4} ^{3-}$ is phosphate.

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3 years ago

Three different rocks that each weigh 50 grams are put out in the sunlight. After two hours, they are all at the same temperatur

Brilliant_brown [7]

Answer:

All rocks have same thermal conductivity.

Explanation:

Rocks are heated with the sunlight exposure. Different types of rocks have different thermal conductivity. The heat energy of the rocks is measure in Joules. The size and thermal conductivity of the rocks is important property which determines their heating capacity.

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3 years ago

Calculate the molarity of a solution of 0.030 mol of HCl in 0.15L of solution?

Rudik [331]

Answer:

0.20M

Explanation:

Molarity (by definition) = moles / Volume in Liters

∴Molarity = 0.030mol/0.15Liter = 0.20M

5 0

4 years ago

Look at the image shown

klemol [59]

Answer:

b) Linear molecule with two domains

Explanation:

The image represents a linear molecule with two domains.

The compound shown here is carbon dioxide in which a central carbon atom is surrounded by two oxygen atoms.

This bond geometry is of the type AX₂
In this linear molecule the bond angle is a perfect 180°
The lone pairs are perfectly balanced out and will not cause distortion of the central carbon.

5 0

3 years ago

In the reaction between phosphoric acid and ammonia, a compound forms containing 28.2 grams nitrogen, 8.1 grams hydrogen, 20.8 g

Mama L [17]

It would be 42.9 grams

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3 years ago