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Kryger [21]
2 years ago
8

Why are iron needles used in compasses

Chemistry
1 answer:
ludmilkaskok [199]2 years ago
4 0

A compass needle points north because the north pole of the magnet inside it is attracted to the south pole of Earth's built-in magnet . <u><em>And irons are heavily attracked to magnet</em></u> .So this is why iron needles used in compasses .

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If a molecule diffusing through extracellular fluid travels 1 mm in 1 sec, how long will it take that molecule to diffuse 1 cm
hichkok12 [17]
Given that the rate of diffusion is 1 mm per 1 second. then the time it travels in 1 cm can be solve using the formula
t = d / r
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t = 10 s
4 0
3 years ago
Alcl3+Na =NaCl+ Al .did Al change oxidation number
saul85 [17]

Answer:

yes it is ( From +3 to 0 )

Explanation:

If this is the balanced equation:

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3 years ago
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8 0
3 years ago
Determine the frequency of light with a wavelength of 2.672 x 10^-7cm
yaroslaw [1]

Answer:

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8 0
1 year ago
The __________________ of a solution tells how many moles of solute are present per liter.
Stels [109]

Answer:

The MOLARITY of a solution tells how many moles of solute are present per liter

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5 0
2 years ago
Read 2 more answers
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