What effect does adding a catalyst have for this reaction?

Desicribe the relationship between an inner planets distance from the sun and its period of revolution?

A glass of juice at 20 °C was kept in the open. After 30 minutes, the temperature of the juice remained the same. Which statement is correct? The temperature of the surrounding air was greater than 20 °C.

Describes what happens when matter is heated to extreme temperature greater than 10,000 degree celsius?

what is the total amount of energy required to remove the most loosely bound electron from each atom in a mole of gaseous Ca

A chemist combines ethane and chlorine with the goal of producing chloroethane which other product could be reasonably expected to form

What is the enthaply of the reaction?

Which color has a higher frequency, A. red light B. blue light

what is the volume of 0.98 mol oxygen (O2) gas at 275 K and a pressure of 2.0 atm? (the universal gas constant is 0.0821 L*atm/mol*K)

Which element is classified as an alkali metal? Rb Sr Zr Cl

Which statements about a neutral atom are correct? Check all that apply. The positively charged particles in the nucleus are positrons. The radius of the electron cloud is twice as large as the radius of the nucleus.