3 years ago

Which one is used in magnets often nickle or lead?

Chemistry

1 answer:

astra-53 [7]3 years ago

7 0

In magnet I believe nickle is used most often

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At 27.00 °c a gas has a volume of 6.00 L . What will the volume be at 150.0 °c

mojhsa [17]

T₁ = 27°C = 27 + 273 = 300K, V₁ = 6 L,

T₂ = 150°C = 150 + 273 = 423K, V₂ = ?,

By Charles' Law: V₁/T₁= V₂/T₂

6/300 = V₂/423

423*(6/300) = V₂

8.46 = V₂

Volume at 150°C =8.46 L.

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2 years ago

Covalent bonds in a molecule absorb radiation in the IR region and vibrate at characteristic frequencies.

vazorg [7]

Answer:

$Frequency=1.6\times 10^{12}\ Hz$

Explanation:

The relation between frequency and wavelength is shown below as:

$c=frequency\times Wavelength
$

c is the speed of light having value $3\times 10^8\ m/s$

Given, Wavelength = 188 μm

Also, 1 μm = $10^{-6}$ nm

So,

Wavelength = $188\times 10^{-6}$ m

Thus, Frequency is:

$Frequency=\frac{c}{Wavelength}$

$Frequency=\frac{3\times 10^8}{188\times 10^{-6}}\ Hz$

$Frequency=1.6\times 10^{12}\ Hz$

7 0

3 years ago

4. What is the role of the<br> benedict solution in testing for<br> presence of carbohydrates

Vanyuwa [196]

Answer:

it identifies reducing sugars (monosaccharide's and some disaccharides), which have free ketone or aldehyde functional group

Explanation:

It turns from turquoise to yellow or orange when it reacts with reducing sugars.

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2 years ago

Write the name and formula of the compound made of magnesium and fluorine

Alexxx [7]

Answer:

Name : Magnesium Fluoride

Formula : MgF2

Explanation:

Give me brainliest

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3 years ago

There are many different ways to classify matter, but one way is to use only two categories for all matter. All matter can be cl

Strike441 [17]

I would put down C. elements or compounds

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3 years ago