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Eduardwww [97]
3 years ago
8

How did earths layers develop?(Science)

Chemistry
1 answer:
Delvig [45]3 years ago
6 0
They all just formed on top of each other like sedimentary rocks
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How many sodium ions are in 1.4 kg of sodium chloride, NaCl?
Whitepunk [10]

Answer:

1.44 x 10²⁵ ions of Na⁺

Explanation:

Given parameters:

Mass of NaCl  = 1.4kg  = 1400g

Unknown:

Number of ions of sodium  = ?

Solution:

The compound NaCl in ionic form can be written as;

      NaCl →  Na⁺ + Cl⁻

In 1 mole of NaCl we have 1 mole of sodium ions

 Now, let us find the number of moles in NaCl;

  Number of moles  = \frac{mass}{molar mass}  

    Molar mass of NaCl  = 23 + 35.5 = 58.5g/mol

Number of moles  =  \frac{1400}{58.5}     = 23.93mol

 So;

   Since 1 mole of NaCl gives 1 mole of Na⁺  

    In 23.93 mole of NaCl will give 23.93 mole of Na⁺

1 mole of a substance  = 6.02 x 10²³ ions of a substance

  23.93 mole of a substance  =  6.02 x 10²³ x  23.93

                                                   = 1.44 x 10²⁵ ions of Na⁺

7 0
3 years ago
PLS ANSWER THANK YOUU
icang [17]

Answer:

Chicken Noodle Soup

Explanation:

The rest do have other things in them but are dissolved unlike the chicken noodle soup.

Hope this Helps!!

:D

8 0
3 years ago
How to make bread step by step
Sedaia [141]
You slap some dough on to a beach and wait for it to become bread
7 0
3 years ago
What are 3 examples of physical change?
bazaltina [42]

Just breaking stuff so yea that’s it

3 0
3 years ago
What scientific instrument is capable of measuring very small masses?​
marusya05 [52]

Answer:

Electronic balances.

Explanation:

5 0
3 years ago
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