Identify the element that has only one dark colored line in its absorption spectrum. O Magnesium
0 Calcium
Sodium
Iron

Which statement best describes the relationship between period and frequency of light waves? a) in wave b the period increases and the frequency decreases from wave a. b) in wave a the period increases and the frequency decreases from wave b. c) in wave b the period is shorter and the frequency is greater than in wave a. d) in wave a the period is shorter and the frequency is greater than in wave b.

The chemical bond connecting one nucleotide with the next one along the nucleic acid chain is called a

How do you know when a chemical reaction has occurred