If 32.78 ml of naoh solution is required to neutralize 20.00 ml 0f 0.2500 m of sulfuric acid, h2so4(aq), what is the concentration of the naoh solution? the balanced equation is: 2naoh(aq) + h2so4(aq) → na2so4(aq) + 2h2o(l)

The  concentration of the NaOH solution is 0.3051 mol/L.

Step 1. Calculate the moles of H_2SO_4

Moles of H_2SO_4

= 20.00 mL H_2SO_4 × (0.2500 mmol H_2SO_4/1 mL H_2SO_4)

= 5.000 mmol H_2SO_4

Step 2. Calculate the moles of NaOH

Moles of NaOH = 5.000 mmol H_2SO_4× (2 mmol NaOH /1 mmol H_2SO_4)

= 10.00 mmol NaOH

Step 3. Calculate the concentration of the NaOH

c = moles/litres = 10.00 mmol/32.78 mL = 0.3051 mol/L

out of these options:

ability to burn paper

pure sodium reacting violently with water

the boiling point of water

helium does not tend to react with anything

i would say this is a physical property:

helium does not tend to react with anything

why? :

i said helium does not tend to react with anything because well, it reacts to ! but ability to burn paper, pure sodium reacting violently with water, & the boiling point of water are chemical or

physical properties: the properties of a substance that can be observed without changing the chemical makeup of the substance

chemical properties: properties of a substance relating to the chemical nature and reactivity of the substance

10 years is the answer