Pretest Unit 1 Question 2 of 42
Which number is correctly expressed in scientific notation?
O A. 0.034
OB. 3.45
O c. 12.2 x 10-5
O D. 6.53 x 104

What type of electromagnetic radiation has a shorter wavelength than blue light

Which statement is true about this reaction? 14n+1h 15o it is a practical source of energy on earth. it occurs only outside the solar system. its product is heavier than each of its reactants. it shows the critical mass of an element.

The empirical formula of a compound is ch2o and its mass is 120 amu/molecule, what is its formula?