Why are scientists interested in exploring Mars? A. possible existence of sulfur vents B. possibility of mining minerals C. possible discovery of a cure for disease D. possible evidence of life

Elemental calcium reacts with water at room temperature to form calcium hydroxide and hydrogen gas as shown in this equation. Sodium undergoes a similar reaction with H2O. What would be the coefficient for sodium in a similar reaction?

Given a wavelength of 1,250 millimeters, what is the wavelength in centimeters? 0.125 1.25 12.5 125

Particles tend to move from an area of high concentration to an area of low concentration in a process known as

Give three examples of an acid

How do you calculate the formula mass of Ca3 (PO4) 2

How many atoms are in nickel

What happens whentwo gases from a liquid like hydrogen combine with oxygen to form water

What is most likely to have caused the increase in atmospheric nitrogen oxide (NO) between 4 A. M. and 7 A. M.?

The atomic mass of F is ___. 9 10 19 55

Rutherford calculated that a gold atom is about 10,000 larger than its nucleus. Thinking about his experiment and its results, how did he come to this conclusion?