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Artemon [7]
2 years ago
5

How many protons does this atom have?:____

Chemistry
2 answers:
lorasvet [3.4K]2 years ago
7 0

QUESTION:-

How many protons does this atom have?:____

How many neutrons does this atom have?:____

How many electrons does this atom have?:____

ANSWER:-

CIRCLE WITH +VE CHARGE :- PROTONS = 6

CIRCLE WITH NO CHARGE:- NEUTRON = 8

CIRCLE WITH -VE CHARGE:- ELECTRONS = 6

Allisa [31]2 years ago
4 0

Answer:

1.6

2.8

3.6

Explanation:

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What is a closed container in relation to the law of conservation of matter
Brums [2.3K]
The law of conservation of mass or principle of mass conservation states that for any system closed to all transfers of matter and energy, the mass of the system must remain constant over time, as system mass cannot change quantity if it is not added or removed. Hence, the quantity of mass is "conserved" over time.
6 0
2 years ago
An unknown acid has a hydronium ion concentration of 0.00352. what is its ph
Ilia_Sergeevich [38]

Answer:

2.453.

Explanation:

<em>∵ pH = - log[H₃O⁺] </em>

[H₃O⁺] = 0.00352 M.

<em>∴ pH = - log[H₃O⁺] </em>= - log(0.00352) = <em>2.453.</em>

7 0
3 years ago
What term defines a mass which is exactly equal to 1/12 the mass of one carbon-12 atom
aalyn [17]

Answer:

Relative atomic mass and it is expressed in atomic mass unit (amu)

Explanation:

AMU:

Atomic mass unit is define as the 1/12 the mass of an atom of carbon-12.

C12 has six neutron and six protons in the nucleus.

This unit is used to express the masses of atoms. We know that masses of atoms are very small and we do not have any such type of balance that can measure very small quantity. So that is way we use this scale to measure small quantity. For example, according to this scale

relative atomic mass of hydrogen is 1.008 amu

relative atomic mass of oxygen is 15.999 amu

relative atomic mass of uranium is 238.0289 amu

relative atomic mass of chlorine is 35.453 amu

4 0
3 years ago
PLEASE HELP!
Tanzania [10]
Molar mass:

KCl = 74.55 g/mol

KClO3 = 122. 55 g/mol

  <span>Calculation of the mass of KClO3 :</span>

<span>2 KClO3 =  2 KCl + 3 O2</span>

2* 122.55 g KClO3 ------------------ 2 * 74.55 g KCl
mass KClO3 ?? --------------------- 25.6 g KCl

mass KClO3 = 25.6 * 2 * 122.55 / 2 * 74.55

mass KClO3 = 6274.56 / 149.1

mass = 42.082 g of  KClO3

Therefore:

1 mole KClO3 ---------------------- 122.55 g
?? moles KClO3 ------------------- 42.082 g

moles KClO3 = 42.082 * 1 / 122.55

moles KClO3 = 42.082 / 122.55

=> 0.343 moles of KClO3


Answer C

hope this helps!

3 0
2 years ago
When the pH of an aqueous solution is 8, what is the OH- ion concentration in moles per liter?
Lilit [14]

Answer:

D. 12 is 1 × 10-6

Explanation:

8 0
3 years ago
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