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k0ka [10]
3 years ago
11

What is the atomic mass that of magnesium

Chemistry
1 answer:
hram777 [196]3 years ago
3 0

Answer:

Name: Magnesium

Atomic Number: 12

Atomic Mass: 24.305 atomic mass units

Number of Protons: 12

Number of Neutrons: 12

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Lady_Fox [76]

Answer:

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Explanation:

3 0
3 years ago
How many mL of 0.715 M HCl is required to neutralize 1.25 grams of sodium carbonate? (producing carbonic acid)
jonny [76]

Answer:

34 mL

Explanation:

We'll begin by calculating the number of mole in 1.25 g of sodium carbonate, Na₂CO₃. This can be obtained as follow:

Mass of Na₂CO₃ = 1.25 g

Molar mass of Na₂CO₃ = (23×2) + 12 + (16×3)

= 46 + 12 + 48

= 106 g/mol

Mole of Na₂CO₃ =?

Mole = mass /molar mass

Mole of Na₂CO₃ = 1.25 / 106

Mole of Na₂CO₃ = 0.012 mole

Next, we shall determine the number of mole HCl needed to react with 0.012 mole of Na₂CO₃.

The equation for the reaction is given below:

Na₂CO₃ + 2HCl —> H₂CO₃ + 2NaCl

From the balanced equation above,

1 mole of Na₂CO₃ reacted with 2 moles of HCl.

Therefore, 0.012 mole of Na₂CO₃ will react with = 0.012 × 2 = 0.024 mole of HCl.

Next, we shall determine the volume of HCl required for the reaction. This is illustrated:

Mole of HCl = 0.024 mole

Molarity of HCl = 0.715 M

Volume of HCl =?

Molarity = mole /Volume

0.715 = 0.024 / volume of HCl

Cross multiply

0.715 × volume of HCl = 0.024

Divide both side by 0.715

Volume of HCl = 0.024 / 0.715

Volume of HCl = 0.034 L

Finally, we shall convert 0.034 L to mL

This can be obtained as follow:

1 L = 1000 mL

Therefore,

0.034 L = 0.034 L × 1000 mL / 1 L

0.034 L = 34 mL

Therefore, 34 mL of HCl is needed for the reaction.

6 0
3 years ago
A hydrated salt, MgSO4, weighing 3.211 g is heated in a crucible until reaching a constant weight. The weight of the anhydrous M
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6 0
3 years ago
Draw an atomic structure of Sodium (Na). What are sub-atomic particles?​
xxMikexx [17]

Sodium represents by the (Na).

7 0
1 year ago
1. An atom that has an outer shell that is NOT full is (more likely OR less likely) to be reactive than an atom that has a full
Serga [27]
Yes because they atom with a stable octet electrons is less reactive it does not need any more electrons while an atom that has an partially filled electrons need more electrons to complete octet structure
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