Asolution with ph 8 is twice as acidic as a solution with ph 4. t or f

Iknow #2 is d. i just need to know why

Which of the following best supports the concept that genetic information is passed on to offspring from both of their parents, not just one?

Sally is making a model of a magnesium atom with an atomic mass number of 24 for her chemistry class. she has foam balls for the protons, neutrons, and electrons. she has added 6 neutrons to her model so far. how many more neutrons does she need to add to complete her neutral atom of magnesium?