No, only a chemical change will change what a subtance is...physical change pertains to smell, color, etc...
The pH of the solution is a measure of the acidity of such solution. Acidity is the level of how much acid is present in a mixture and is associated with the concentration of hydronium ions. For pH, it is equal to the negative logarithm of the hydronium ion concentration. We use this to calculate for what was asked.
pH = - log [H+]
2.32 = - log [H+]
[H+] = 4.79x10^-3 M
2 moles of NaOH dissolved in 1 litre of solution is the solution with more concentration.
Answer: Option A
<u>Explanation:</u>
Concentration of solution is the measure of the amount of solute dissolved in the solvent of the solution. So this is measured using the molarity of the solution. Molarity is determined as the number of moles of the solute present in the given amount of solvent.
In this present case, the option A gives the molarity of 2 M as
But the second option, mass of NaOH is given. So we have to determine the molarity. First we have to find the molar mass of NaOH. We know that 1 mole of NaOH will contain 40 g/mole.
1 g of NaOH = 40 g of NaOH
1 g of NaOH = 1/40 moles
So 2 g of NaOH will contain which is equal to 0.05 moles of NaOH.
Thus, the molarity of 2 g of NaOH will be
Molarity = =0.05 M
Thus, the option A is having higher concentration as the molarity is more for 2 moles of NaOH dissolved in 1 l of solution.
Answer:
Carbon
Explanation:
Carbon is a special element that can form covalent compounds at any shape.
Fuels all consists of carbon.
If you study organic chemistry you will learn more about the miracles of carbon.
Answer:
wla dyan ang sagut ehh baka mali yan