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lina2011 [118]
3 years ago
13

Are elements matter and why?

Chemistry
1 answer:
nata0808 [166]3 years ago
4 0

All matter is made up of substances called elements, which have specific chemical and physical properties and cannot be broken down into other substances through ordinary chemical reactions. Gold, for instance, is an element, and so is carbon. There are 118 elements, but only 92 occur naturally.

<h3><u>P</u><u>LEASE </u><u>MARK</u><u> ME</u><u> BRAINLIEST</u><u>.</u></h3>
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How many grams are there in 9.4x10^25 molecules of H2
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You start with 9.4 x 1025 molecules of H2.

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How much would the boiling point of water increase if 4 mol of sugar were added to 1 kg of water (Kb = 0.51°C/(mol/kg) for water
andre [41]

Answer : The boiling point of water increases, 2.04^oC

Solution : Given,

Moles of solute (sugar) = 4 moles

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i = 1 for sugar

Formula used :

\Delta T_b=i\times K_b\times m\\\Delta T_b=i\times K_b\times \frac{n_{solute}}{w_{solvent}}

Where,

\Delta T_b = elevation in boiling point

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m = molality

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w_{solvent} = mass of solvent (water)

i = van't Hoff factor

Now put all the given values in this formula, we get the elevation in boiling point of water.

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Therefore, the elevation in boiling point of water is 2.04^oC

4 0
4 years ago
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