Which of the statements is true about chemical reaction rates

the reaction rates can change

the reaction rates are always constant

the reaction rates cannot increase

the reaction rates cannot decrease

A car moves with an average speed of 45miles / hour. How long does the car take to travel 90miles?

What is typically seen when an active metal reacts with acid?

Sodium has an atomic number of 38 and a mass number of 88 how many neutrons are in one atom of strontium 88 50 38 126

What is Group 1 nonmetal? Type the symbol

This is the volume occupied by one mole of any gas at standard temperature and pressure (STP). This is 22.4 liters at STP. Does anyone know this vocabulary word?

What is the atomic weight of a hypothetical element consisting of two isotopes, one with mass = 64.23 amu (26.0%), and one with mass = 65.32 amu? (a) 65.3 amu (b) 64.4 amu (c) 64.9 amu (d) 65.0 amu (e) 64.8 amu

Is this base a physical or chemical property?

Classify each of the following aqueous solutions as a nonelectrolyte, weak electrolyte, or strong electrolyte. a) LiClO4 b) HClO c) CH3CH2CH2OH d) HClO3 e) CuSO4 f) C12H22O11

Give examples of temporaty physical change

Which of these is a source of sediment? A. Fragments of other rocks B. Chemicals and Minerals dissolve in water C. Sea shells D. All of the above