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3 years ago

Complete this equation for the dissociation of na2co3(aq). omit water from the equation because it is understood to be present.

Chemistry

2 answers:

Phantasy [73]3 years ago

7 0

Answer: The chemical equation is written below.

Explanation:

Sodium carbonate is an ionic compound and its dissociation will lead to the formation of its respective ions.

This compound is formed by the combination of sodium and carbonate ions.

The chemical equation for the dissociation of sodium carbonate follows:

$Na_2CO_3(aq.)\rightarrow 2Na^+(aq.)+CO_3^{2-}(aq.)$

By Stoichiometry of the reaction:

1 mole of sodium carbonate produces 2 moles of sodium ions and 1 mole of carbonate ion.

Hence, the chemical equation is written above.

Savatey [412]3 years ago

6 0

Net overall dissociation:
Na2CO3 ---> 2Na(-) + CO3(2-)

*The ion charge is in parenthesis

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Platinum crystallizes with the face-centered cubic unit cell. The radius of a platinum atom is 139 pm. Calculate the edge length

horrorfan [7]

Answer:

Length = 393pm, Density = 21.3 g/cm^3.

Explanation:

From the question above, we have the following parameters or data which is going to aid in solving the above Question.

=> The radius of a platinum atom = 139 pm.

Therefore, the length can be calculated by making use of the formula given below:

Length = 2 √( 2r) = 2 × √ (2 × 139 × 10^-12m ) = 393 × 10^-10 m = 393pm.

The density can be calculated by making use of the chemical formula given below:

Density = mass ÷ volume = (195.064/ 6.02 × 10^23) ÷ (3.93 × 10^-10/ 10^-2) = 21.3 g/cm^3.

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