1 Answer. Find the total mass of the nitric acid HNO3 Then divide the mass of each atom by the total mass to find the percentage.

## What is the mass percent of HNO3?

Elemental composition of HNO3

Element Symbol Mass percent
Hydrogen H 1.5996
Nitrogen N 22.2283
Oxygen O 76.1721

## How do you make 5% HNO3 solution?

CAREFULLY add 5 mL of concentrated nitric acid to both tubes and heat them in the dry block heater at 60 C for 1 hr under a hood. Quantitatively transfer the contents of each test tube into a separate 100-mL volumetric flask and bring up to volume with MP water (solution will now be 5% (v/v) HNO3).

## What is the mass of a concentrated solution of nitric acid?

A concentrated solution of nitric acid is 68% HNO 3 by mass which means that there are 68 grams HNO 3 per 100 grams of solution.

## What is the mass of a 4.00 NaOH solution?

The percentage mass of NaOH in the solution = 4.00 %. The mass of NaOH = 15.0 g.

## What is the formula of brine solution?

Brine

PubChem CID /th>
Molecular Formula ClH2NaO
Synonyms Brine NaCl water HCl NaOH sodium chloride water water sodium chloride More…
Molecular Weight 76.46 g/mol
Component Compounds CID 962 (Water) CID 313 (Hydrochloric acid) CID 5360545 (Sodium)

## How do you calculate salt solution?

To make a salt solution by weight percent (w/v), you apply the formula w/v = (mass of solute ÷ volume of solution) × 100. The density of water is 1 gram per milliliter (g/ml) which means 1 milliliter of water weighs 1 gram.

## What is the dissolving substance in a solution?

The solute is the substance that is being dissolved, while the solvent is the dissolving medium. Solutions can be formed with many different types and forms of solutes and solvents.