A 25.00-mL sample of 0.175 M HCl is being titrated with 0.250 M NaOH. What is the pH after 25.00 mL of NaOH has been added

The density of water is 1 g/cm cubed and in order for the pebble to sink its density has to be greater than the density of water and in order for the twig to float its density has to be less than the density of water

A.(nh4)(2co3)is the correct answer 

Answer; carbon monoxide (co);

Answer    "a salt" would be the best answerexplanationsalts can be defined as ionic compounds that are neither acids nor bases. nacl is an example of a salt, and its ionic.an enzyme is an organic compound which is covalently bonded, not ionically bonded.acids are generally held together by covalent bondsan element does not need any bonds to exist