Fast !
a total of 20.0 ml of sodium hydroxide (naoh) was neutralized by 30.0 ml of 0.250 m hydrogen bromide (hbr). what was the concentration of the sodium hydroxide?

i also need to know the solution, molar ratio, volume, and concentration

Since there is the same amount of agn03 in both silver chloride and silver nitrate they produce the same amount of moles. therefore silver chloride produces the same amount of silver nitrate, so your answer is 15.0 moles of silver nitrate. i hope this !

Sorry i dont understand the question can you rephase it?

Its trait is different and it the organism survive

Each calcium ion has a charge of +2, which can also be written as ca2+. if those ions move out of the neuron and no other ions are moving, the neuron would lose the positive charge associated with those ions and become more negatively charged.