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2 years ago

What is The substance that could not be dissolved and has settled out of a solution

Chemistry

1 answer:

lys-0071 [83]2 years ago

5 0

homogeneous mixture not pure, but is spread out the same throughout

concentration, a measure of the amount of solute dissolved in a solvent

mixture,two or more substances that do not chemically combine, salt and pepper

solute,substance that is dissolved in the solution

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Which term describes a chemical equation in which all highly soluble compounds are written as dissociated ions

BartSMP [9]

Answer: IONIC EQUATION.

Explanation:

A chemical equation is defined as the form by which a chemical reaction is represented mathematically. These are written in the form of symbols and chemical formulas of reactants and products which are taking part in the chemical reaction. A chemical equation can be written in two forms, these include:

--> MOLECULAR EQUATION: in this type of equations, the compounds are written and represented in a molecular form. This is sometimes referred to as a balanced equation.

--> IONIC EQUATION: This is a type of chemical equation in which the electrolytes in aqueous solution are expressed as dissociated ions. A typical illustrated example is seen in the reaction between AgNO3(aq) and NaCl(aq) :

Ag+(aq) + NO3-(aq) + Na+(aq) + Cl-(aq) → AgCl(s) + Na+(aq) + NO3-(aq)

The (aq) written in the above equation signifies they are in aqueous solution.

4 0

2 years ago

What characteristic bright line spectrum of an elementforced when electrons?

emmasim [6.3K]

The characteristic bright-line spectrum of an element is produced when its electrons return to lower energy levels To be in the ground state all electrons must be in their lowest energy state; all excited atoms must lose energy. The lost energy appears in the form of light. Hope this helped :)

8 0

3 years ago

A sample was then prepared containing 14.00 mL of coffee and 8.00 mL of 4.80 ppm Li , and diluted to a 50.00 mL total volume. Th

mafiozo [28]

Answer:

The right answer is " $[Na^+]=5.57 \ ppm$ ".

Explanation:

The given values are:

$\frac{A_s}{A_{coffee}} =\frac{0.840}{1.000}$

According to the question,

The concentration of standard will be:

= $\frac{7.80}{50.00}\times 4.80$

= $0.156\times 4.80$

= $0.748 \ ppm$

Coffee after dilution,

⇒ $\frac{A_{coffee}}{C_{coffee}} =F\times \frac{A_s}{C_s}$

or,

⇒ $C_{coffee}=\frac{A_{coffee}}{A_s}\times \frac{C_s}{F}$

On substituting the values, we get

⇒ $=\frac{1.000}{0.840}\times \frac{0.748}{1.68}$

⇒ $=1.191\times 1.3104$

⇒ $=1.561 \ ppm$

hence,

In unknown sample, the concentration of coffee will be:

= $1.561\times \frac{50}{14}$

= $\frac{78.05}{14}$

= $5.57 \ ppm$

7 0

3 years ago

Which contain a common ion that will shift the equilibrium system represented by the equation shown? Select all that apply. MgSO

inn [45]

The compounds in the reaction that shifts the equilibrium with the common ion effect are $\rm MgSO_2\;and\;HNO_3$ .

<h3>What is the common ion effect?</h3>

The equilibrium condition has an equal amount of reactant and products in the reaction.

The addition of ions same as product or reactant results in a change in the equilibrium of condition and shifts the equilibrium in opposite direction.

The given reaction is:

$\rm H_2SO_4\;\rightleftharpoons 2H^+\;+\;SO_4^{2-}$