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3 years ago

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How do you define an anion?

2 answers:

Elis [28]3 years ago

8 0

An anion has more electrons than protons, it is a negatively charged ion.

Katena32 [7]3 years ago

3 0

Answer:

a negatively charged ion, as one attracted to the anode in electrolysis. any negatively charged atom or group of atoms (opposed to cation).

Explanation:

this is what i found hope iit helps

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If you put hydrogen (H1+) and Hydroxide (OH1) together what it’s it called?

Tamiku [17]

Answer:

The hydroxyl ions (OH-) released will combine with any hydrogen ions (H+) in the solution to form water molecules (OH- + H+ = H2O).

Explanation:

3 0

3 years ago

Explain why some metals are extracted by heating their oxides with carbon, but some metals cannot be extracted in this way

Oxana [17]

Answer:

This happens because a metal is less reactive than carbon and it can be extracted from its oxides by heating with carbon. The carbon displaces metal from the compound and removes the oxygen from the oxide.

8 0

3 years ago

Why do scientists use the periodic table to study elements?

e-lub [12.9K]

Answer:

Explanation:

The periodic table of elements is based on the periodic law. This table shows the systematic arrangement of elements based on their atomic numbers into rows and columns.

Scientists use the periodic table to study elements because:

it provides clues into the physical and chemical properties of elements.
shows the trends of different properties.
it makes studies of elements very simple and easy to understand.
we can identify succinct repeating patterns among elements in the table.
it provides information about the atomic structures of elements

3 0

3 years ago

A sample containing KBr (M 119&/mol) and KNO3 (M 101 g/mol) was analysed by using the Mohr method, A 1.1250-g sample is diss

djverab [1.8K]

Explanation:

(a) As we know that relation between normality and volume of two solutions is as follows.

$N_{1}V_{1} = N_{2}V_{2}$

As the given data is as follows.

$N_{1}$ = ?, $N_{2}$ = 0.050 N

$V_{1}$ = 20 ml, $V_{2}$ = 16.25 ml

Therefore, putting the given values into the above formula as follows.

$N_{1}V_{1} = N_{2}V_{2}$

$N_{1} \times 20 ml = 0.050 N \times 16.25 ml$

$N_{1}$ = 0.0406 N

Hence, normality of solution A is 0.0406 N.

(b) As gram equivalent weight of KBr is 119 g/mol.

Formula to calculate normality is as follows.

Normality = $\frac{weight}{gm equi. wt} \times \frac{1000}{V_{ml}}$

As volume is 200 ml, normality is 0.0406 N, and gram equi. wt is 119 g/mol. Therefore, putting these values into the above formula as follows.

Normality = $\frac{weight}{gm equi. wt} \times \frac{1000}{V_{ml}}$

0.0406 N = $\frac{weight}{119 g/mol} \times \frac{1000}{200 ml}$

weight = 0.9668 g

As 0.9668 g of KBr is present in 1.1250 g sample. Hence, weight percentage will be calculated as follows.

Weight % of KBr = $\frac{0.9668 g}{1.1250 g}$

= 85.94%

Thus, we can conclude that C% w/w of KBr in the original sample is 85.94%.

8 0

3 years ago

Study the mixture below and classify whether it is a solution, suspension or colloid.

sladkih [1.3K]

Answer:

Mayonnaise - Colloid

Oil and Water - Suspension

salt and water - Solution (saline)

Need Explanation?

8 0

3 years ago