Answer;
Molarity of NaOH is 0.80 M
Explanation;
The balanced equation for the reaction is;
2NaOH(aq) + H2SO4(aq = NaSO4(aq) +2 H2O (l)
Moles = concentration x volume
thus; 0.355M x 0.0282L= 0.01 moles of H2SO4.
Using the mole ratio;
Moles of NaOH = Moles of H2SO4 ×2
= 0.02 Moles
Therefore; moles of NaOH = 0.02 moles
But; Concentration = moles / volume
Thus; Concentration of NaOH = 0.02 / 0.025L
= 0.8M
There are 4 significant figures! Start counting after the first non-zero digit :)
Hope this helps.
Answer: They are around the nucleus.
Explanation: Protons and neutrons are in the nucleus. Electrons are in the electron cloud which is around the nucleus.
Answer: The wavelength of the wave travelling through vaccum is 
Explanation:
To calculate the wavelength of the wave, we use the formula:
Rearranging the terms,
Where, 
= wavelength of the wave = ?
= Frequency of the wave = 
c = Speed of light in vacuum = 
Putting values in above equation, we get:
Hence, wavelength of the wave in vacuum will be
Answer:
Neon
Explanation:
The most stable Atoms are from the elements on group 18 of the predictable.
