Which of the following atoms would be electrically neutral? Click the answer you think is right.
An atom with 1 proton, 2 neutrons and 3 electrons.
An atom with 2 protons, 2 neutrons, and 2 electrons.
An atom with 1 proton, 3 neutrons, and 2 electrons.

What is a number added in front of a formula in order to balance the equation

What the blanks in these lines are ?

High-pressure liquid chromatography (hplc) is a method used in chemistry and biochemistry to purify chemical substances. the pressures used in this procedure range from around 500 kilopascals (500,000 pa) to about 60,000 kpa (60,000,000 pa). it is often convenient to know the pressure in torr. if an hplc procedure is running at a pressure of 1.03×108 pa , what is its running pressure in torr?