Which of the following pH values represents a strong base?

1

7 8 13

How many neutrons and protons does a neutral atom of sodium with an atomic mass number of 23 have? A. 22 neutrons; 11 protons B. 23 neutrons; 11 protons C. 11 neutrons; 11 protons D. 12 neutrons; 11 protons

Which formula represents 2-butene

Note that butane has two possible isomers but that decane has 75 possible isomers. Why does the number of possible isomers go up with an increasing number of carbon atoms?

Choose the number of significant figures indicated 3.820

What is the change in the enthalpy, in kJ/kg, of oxygen as its temperature changes from 150 to 200°C? Is there any difference if the temperature change were from 0 to 50°C?

Which factor does not influence the rate of a chemical reaction? A. the concentration of reactants B. the surface area of reactants C. the presence of a catalyst D. the volume of the container in which the reaction occurs

Air currents move objects in the air. Explain how a convection current might affect the flight of a hot air balloon

Compare atomic number, mass number, and atomic mass

How does mass affect thermal energy transfer?

Explain whether nitrogen atoms will form bonds with other atoms.