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mezya [45]
3 years ago
13

Element A has 15 protons. Determine the number of neutrons in its isotope with mass number 33.

Chemistry
1 answer:
bagirrra123 [75]3 years ago
6 0
In an electrically neuteral atom, number of protons = number of electrons = atomic number.
Mass number = neutrons + protons/electrons/atomic number
Therefore,
neutrons = mass number - <span>protons/electrons/atomic number
Neutrons = 33 - 15 = 18

The answer is thus B. But this is the solution and explanation along with it as proof.</span>
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Prepare indicators by using natural materials like extract of red cabbage leaves, crushed beetroot,
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Answer:

Y

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juice, vinegar or baking soda solution?

n Which property did you think of while choosing the remedy?

Surely you must have used your knowledge about the ability of

acids and bases to nullify each other’s effect.

n Recall how we tested sour and bitter substances without tasting

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You already know that acids are sour in taste and change the colour

of blue litmus to red, whereas, bases are bitter and change the colour of

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water. You can also use synthetic indicators such as methyl orange and

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Litmus solution is a purple dye, which is extracted from lichen, a plant belonging to

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2021–22

18 Science

2.1 UNDERSTANDING THE CHEMICAL PROPERTIES OF

ACIDS AND BASES

2.1.1 Acids and Bases in the Laboratory

Activity 2.1

These indicators tell us whether a substance is acidic or basic by

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Explanation:

8 0
3 years ago
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madam [21]

Complete Question:

The complete question is on the first uploaded image

Answer:

The solution is on the second uploaded image

Explanation:

The explanation of the above solution is on the third uploaded image.

4 0
3 years ago
3. Once magnesium (Mg) gives up electron(s) to become an ion, it will become
xeze [42]

Answer:

Option B. Cation that is smaller than the original atom.

Explanation:

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