On a spring morning (20 Celsius) you fill your tires to a pressure of 2.25 atmospheres. As you ride along, the tire heats up to 45 Celsius from the friction on the road. What is the pressure in your tires now?

Why does his teacher ask him to balance the equation by including the correct coefficient

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?

What is the ph of a solution that has a hydrogen ion concentration of 1.0 * 10 -9 m?