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mash [69]
3 years ago
6

Iron filling's were mixed together with salt crystal's What unique property of iron would be BEST to separate the fillings from

the salt
Chemistry
1 answer:
Leto [7]3 years ago
8 0

Answer:

Magnetic property

Explanation:

Iron filling is a magnetic compound, unlike the salt crystals. This means they are attracted by magnets.

To separate a mixture of iron filling s and salt crystals, a magnet should be used to remove the iron fillings from the mixture.

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Help please help!!!!
stiks02 [169]

Answer:

B

Explanation:

6 0
3 years ago
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A student increases the temperature of a 200 cm3 balloon from 33degrees C to 47 degrease C. What will the new volume of the ball
sveta [45]
The answer is 209.15cm3

The volume is directly related to the temperature of a gas. You can solve this question using Charles' law, but remember to convert the temperature from Celcius to Kelvin.

V1/T1= V2/T2
<span>200 cm3/ (33+273K)= V2/(47+273K)
V2= 200cm3 * 320/306= 209.15cm3</span>
7 0
3 years ago
How many number of electrons are in nitrogen and aluminium in their ionic States?​
mariarad [96]
If you look at the periodic table you’ll noticed a trend. Group one, sometimes called 1A, has hydrogen in it, it’s group (column) has a positive charge. The group (column) next to it Group 2 sometimes called 2A has twice the charge as group 1. Then you skip the transition metals, and then land on group (column) 13. These guys have a charge of +3 typically. Then you have group 14, sometimes called 4A, and it’s weird and it kind of breaks with this trend. Then you have group (column) 15 next to it, sometime called 5A, which now starts to count down in charge, it has a charge of -3.

And each group (column) after that countdown to zero charge, once you have zero charge you know that you’re in the noble gases.

So, nitrogen in group (column) 15, also know as column 5A. This column has for the most part a charge of -3.

Aluminum is in group (column) 13, they have a charge of +3 typically.


I hope that helps.

7 0
3 years ago
Perform the following mathematical operations and express the correct answer to the proper number of significant figures or deci
nordsb [41]

Answer: 7.71 + 4.31 + 1.7 + 4.00141= 17.72141

7.71 x 4.31 x 1.7 x 4.00141=  226.04433255

Explanation:

(i) 7.71 + 4.31 + 1.7 + 4.00141

= 7.71000+4.31000+1.70000+ 4.00141   [make like decimals]

= 17.72141    [By adding the corresponding places ]

(ii)  7.71 x 4.31 x 1.7 x 4.00141 =( 7.71 x 4.31) x 1.7 x 4.00141

= 33.2301 x 1.7 x 4.00141

= (33.2301 x 1.7) x 4.00141

=  56.49117 x 4.00141

= ( 56.49117 x 4.00141 )

=  226.04433255

Hence,  7.71 + 4.31 + 1.7 + 4.00141= 17.72141

7.71 x 4.31 x 1.7 x 4.00141=  226.04433255

7 0
3 years ago
Evidence shows that interstellar bodies are moving far away from earth some faster than others which best suggest that the unive
igor_vitrenko [27]
The answer is B

Hope my answer was of assistance

~ Fire
7 0
3 years ago
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