Which of the following is strong base?

hf

hcl

nacl

naoh

Acylinder is filled with 2.00 moles of nitrogen, 3.00 moles of argon and 5.00 moles of helium. if the gas mixture is at stp, what is the partial pressure of the argon

According to coulomb's law, how would the electrical force between particles change if the product of their electrical charge increased?

Rays from the sun are not considered matter true or false