what is the concentration of a solution made by diluting 15 ml of 6.0 m hcl to a final volume of 750 ml?

1. calculate the approximate enthalpy of the reaction in joules. estimate that 1.0 ml of vinegar has the same thermal mass as 1.0 ml of water. iqnore the thermal mass of th sodium bicarbonate. note: it takes about 4.2 joules () to change 1.0 gram (1.0ml) of water 1.0 c

Asample of radium-226 will decay 1/4 of its original amount after 3200years. what is the half-life of radium-226?

What are the charges of the subatomic particles by choosing the answer from the drop down menu. protons have a (+1,0,or-1). (protons, neutrons, electrons) have a 0 charge. 3.) electrons have a (+1,0,-1)