A child is male because he has one X chromosome and one Y chromosome where did these chromosomes come from

The energy required to start a reaction is called ionization energy kinetic energy electronegative energy activation energy

Differentiate between the various qualities of reagents which are ordinary, analar and industrial quality reagent

Calculate the molarity of a solution, given that its volume is 820 mL and that it contains 7.4 g of ammonium chloride, NH, CI.

Scientific method steps

Nitroglycerin detonates according to the balanced reaction: 4 C3H5N3O9 (l) → 12 CO2 (g) + 6 N2 (g) + O2 (g) + 10 H2O (g). If 150.

Amy is holding one end of a jump rope. Her friend Beth is holding the other end of the rope. Amy swiftly moves the handle of the jump rope downward, creating a large wave in the rope. Will Beth feel a tug on the rope at her end?

Which is the balance equation for S8+O2=SO2

Sound waves travel fastest through? A.) Air B.) Steel C.) Water D.) Vacuum

Which of the following combinations will result in a reaction that is never spontaneous? 1) positive enthalpy change and positive entropy change 2) positive enthalpy change and negative entropy change 3) negative enthalpy change and positive entropy

Which of the formed elements is present in the greatest concentration?