How long have orca whales been on the endangered species list?

Why was Aristotle considered correct over Democritus based on their time period

Which of the following is true of an alpha particle? it consists of 4 particles it consists of 2 protons and 2 neutrons it is a helium atom all of the above

Do all waves have the same speed

Sa solution is made by dissolving 26.42 g of (NH4) 2SO4 in enough H2O to make 50.00 mL of solution. what is the molarity of the solution

Given the thermochemical equations X 2 + 3 Y 2 ⟶ 2 XY 3 Δ H 1 = - 380 kJ X 2 + 2 Z 2 ⟶ 2 XZ 2 Δ H 2 = - 130 kJ 2 Y 2 + Z 2 ⟶ 2 Y 2 Z Δ H 3 = - 260 kJ Calculate the change in enthalpy for the reaction. 4 XY 3 + 7 Z 2 ⟶ 6 Y 2 Z + 4 XZ 2

Is metalloid an insulator

What is a example of a population

Which of the following statements holds true for a chemical change? OA In a chemical change, no new substance is formed. B. In a chemical change, a substance changes its phase. oc. In a chemical change, the molecular structure of a substance changes.

What is the name of the branch of science that specifically studies the conversion of chemical energy to electrical energy and vice versa? biochemistry electrochemistry organic chemistry thermodynamics

What is the symbol for heat