Answer:
The correct answer is and
Explanation:
A "spectator ion" is an ion that exists as a reagent and as a product in a chemical reaction. This ion has the particularity of not affecting the equilibrium.
In this case, the two components that do not see their charges modified on both sides of the reaction are and
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The mass of Na22 in the sample is 0.053746 g.
We have a sample with 2 isotopes of sodium. Na22 with a relative atomic mass of 21.9944 u and Na23 with a relative atomic mass of 22.9898 u. Let "x" be the fractional abundance of Na22 and "1-x" the fractional abundance of Na23. If the apparent atomic mass is 22.9501 u, we can state the following expression.
The mass of the sample is 1.3476 g. We can find the mass of Na22 in the sample by multiplying it by its fractional abundance.
The mass of Na22 in the sample is 0.053746 g.
You can learn more about isotopes here: brainly.com/question/21536220
You take the grams of CO₂ times Avogadro's number divided by the molar mass.
The chemical formula of the solute is NaNO3. The mass of this is 1.4*85=119 g. The boiling point of the solution is higher than water. The molarity of this solution is 1.4/2=0.7 M.