All categories

3 years ago

Ine element and compound with example.

Chemistry

1 answer:

SOVA2 [1]3 years ago

5 0

Explanation:

an element is a substance which cannot be spilt upto two or more simple substances.For eg gold,silver
a compound is the substance produced by the union of two or more elements in a definite proportion by weight .For eg water,carbon dioxide
I dont know
A mixture is a substance formed by mixing two or more elements are compounds in any proportion by mass .Its types are:Hetregeneous mixture and homogeneous mixture.

the difference between mixture and compound is that a mixture is a substance formed by mixing two or more elements are compounds in any proportion by maths and compound is a substance produced by the union of two or more elements in a definite proportion by weight.
chemical equation is defined as the symbolic representation of a chemical reaction

You might be interested in

How can we keep our voices in tip top shape? Please list the three things we can do to help our voices. Which would you say is m

Alisiya [41]

Answer:

help our vocos

Explanation:

5 0

3 years ago

Estimate the ph of the resulting solution prepared by mixing 1.0 mole of solid disodium phosphate (na2hpo4) and 1.25 mole of hyd

GenaCL600 [577]

The HCl added = 1.25 moles

and the moles of Na2HPO4 = 1 mole

Now when acid is added in the given solution of Na2HPO4

One mole of H+ will react with one mole of Na2HPO4 to given one mole of NaH2PO4

Na2HPO4 + H+ ---> NaH2PO4

Now this one mole formed NaH2PO4 will further react with 0.25 moles of H+ left to form 0.25 moles of H3PO4 and 0.75 moles of NaH2PO4 will remain in the solution

So this will result into formation of a buffer of phosphoric acid and NaH2PO4

NaH2PO4 + H+ ---> H3PO4

pKa of H3PO4 = 2.1

so pH = pKa + log [salt] / [acid] = 2.1 + log [0.75 / 0.25] = 2.58

so the pH will be in between 2.1 to 7.2

7 0

3 years ago

Is O2 a element or a compound

Dvinal [7]

O2 is an element As it contains just one kind of atom, O2 is an element,

8 0

3 years ago

Read 2 more answers

Which property describes a mixture? It cannot be separated by physical methods. It has a single chemical composition. It cannot

natima [27]

Answer:

it cannot be separated by physical methods

Explanation:

7 0

3 years ago

Read 2 more answers

Why is burning wood a chemical change?

Nitella [24]

There are 4 things that are evidence of a chemical change.
1)Change in color
2)Change in shape (gas being let out)
3)Change in temperature
4)Change in smell

Burning wood is a chemical change because it has a change in color, and shape.

3 0

3 years ago