Why do scientists have to make an experiment

Explain in your own words what empirical evidence is.

How many milliliters of a stock solution of 2.00 m kno3 would you need to prepare 100ml of 1.50 m kno3?

An enzyme is a special kind of catalyst that works to a. speed up a specific biochemical reaction. b. break down chemical elements. c. slow down a chemical reaction. d. maintain the correct temperature for a reaction.

Is coffee a pure substance or a mixture?

How many daughter cells are produced from meiosis

The density of an aqueous solution of nitric acid is 1.36 g/ml and the concentration is 2.48 m. what is the concentration of this solution in percent by mass?

In a crystal lattice of an ionic compound, A. Kind of a given charge are clustered together B. Ions are surrounded by ions of the opposite charge C. A sea of electrons surrounds the ions D. Neutral molecules are present

Discuss why two objects of made of the same type of matter at the same starting temperature with different masses increase in temperature at different rates when the same amount of thermal energy is transferred to each object.

An isotope contains 56 protons, 54 electrons, and 74 neutrons. What is the identity of the isotope?

How many ozone particles are needed to form 24 particles of oxygen gas?