There are eight protons in an oxygen atom and one proton in a hydrogen atom. What are these number called?

A: periodic table

B: mass number

C: atomic number

Why do people with low iron have pale skin and no energy?

the space shuttle releases a space telescope into orbit around the earth. the telescope goes from being stationary to traveling to a speed of 1700 m/s in 25 seconds whats the acceleration of the satellite?

What is the molarity of a solution prepared by dissolving 1.56 g of gaseous hcl (molar mass = 36.5 g into enough water to make 26.8 ml of solution?

Where are the alkali metals, the alkaline earth metals, the halogens, and the noble gases located on the periodic table?

What is the mass of 0.513 mol Al2O3? Give your answer to the correct number of significant figures. (Molar mass of Al2O3 = 102.0 g/mol) 0.513 mol Al2O3 = | g Al2O3

When phenolphthalein indicator is added to a colorless solution with a pH of 10, a student observes and concludes that the tested solution 1 remains colorless and is basic 2. remains colorless and is acidic 3. turns pink and is basic 4.

Which of these discoveries contradict components of dalton atomic theory? Check all of the boxes that apply

What 3 questions do toxicologist want to answer

A 1.2 L weather balloon on the ground has a temperature of 25°C and is at atmospheric pressure (1.0 atm). When it rises to an elevation where the pressure is 0.74 atm, then the new volume is 1.8 L.

Why carbon dioxide is poisonus