yes
NaCl is the formula unit of sodium chloride; 0,9 NaCl is a solution, probable o,9 molar.
When you flame test the two solutions, any Na solution burns yellow, while any K solution burns violet/purple. So both the KCl and the KBr will burn purple, while both NaBr and NaCl will burn yellow.
They're actually exactly the same in that neither of them exists.
The concentration is the same !
isotonic solution
The 0.5M solution has a lower concentration of NaCl compared to the 2.0M solution. This means the 2.0M solution has more NaCl dissolved in the same volume of water. Consequently, the 2.0M solution will be more concentrated and have a higher osmolarity compared to the 0.5M solution.
There are 150 mg of Na in 1 ml of 0.9% NaCl solution. This is equivalent to 150 mEq of Na in 150 ml of the same solution.
There is 1 atom of Na in 1 molecule of NaCl. The molar mass of NaCl is 58.44 g/mol, so in 49.3g there are 49.3/58.44 moles of NaCl. This equals the same number of moles of Na, which corresponds to 49.3/58.44 x 6.022 x 10^23 atoms of Na.
No, molarity and molar equivalent are not the same. Molarity is a measure of the concentration of a solute in a solution expressed as moles of solute per liter of solution, while molar equivalent is a concept used in stoichiometry to express the relative amounts of reactants and products involved in a chemical reaction.
The pH of the 0.1 M solution of NaC2H3O2 would be higher than that of the 0.1 M solution of KC2H3O2 as NaC2H3O2 is a strong base and will increase the pH, while KC2H3O2 is a weak acid and will decrease the pH.
For NaCl [note correct capitalization], normality is the same as molarity, the number of moles or, for ionically bonded compounds such as NaCl, gram formula masses per liter of solution, because the ions produced from NaCl in water are monovalent. The gram formula mass of NaCl is 58.44. Therefore 100 g of NaCl constitute 100/58.44 or 1.71 gram formula masses, to the justified number of significant digits. If the final volume of the solution is 1 litre, this is also the normality. If the volume is not considered exact, only one significant digit would be justified for normality, which should then be specified as 2.
Is_0.80_percent_NaCl_hypotonic_or_hypertonic