kallyavilez5 kallyavilez5

23-06-2018
Chemistry

contestada

Which is an element?
A: H20
B: NaCl
C: Mg
D: CO

Respuesta :

Nonportrit Nonportrit

23-06-2018

The answer is option D "CO." Co also known as Cobalt is the 27th element on the periotic table. It was discovered in 1735, it's boiling point is 3200 k.

Atomic mass: 58.9332
Protons: 27
Neutrons: 32
Electrons: 27

Hope this helps!

Ver imagen Nonportrit

Answer Link

jenn16929 jenn16929

23-06-2018

D is the answer. The others are compounds not single elements

Answer Link

Otras preguntas

The use of the Marshall Plan in Western Europe after World War II strengthened the forces of (1) democracy (3) isolationism (2) communism (4) autocrac

A polis of ancient Greece was a __________. a. politically independent unit that included a city and surrounding land b. colony controlled by the country that e

which two geometric sequence in the following list have the same ratio? a. 4.3, 17.2, 68.8, 275.2 b.5, 15, 45, 135, 405 c -5, -15,- 45, -135,- 405 d. -4.8, -16.

How did the not guilty verdict in Andrew Johnson's impeachment trial affect the balance of power within the federal government? A. The judicial branch gained n

Which of the following statements best describes the results of improvements in computer technology since 1950? Computers have become smaller and more efficient

PLEASE HELP Identify the sentence that uses correct punctuation. a. We had to walk, all the way to the train station, the bus doesn't go that far. b. We had to

Why was the Weimar Republic considered weak?

Are all atoms (elements) neutral? And if not, how is the amount of electrons discovered?

Which point is not on the graph represented by y = x^2 + 3x - 6? (1) (-6,12) (3) (2,4) (2) (-4,-2) (4) (3,-6)

What role did the food supply play in shaping the nomadic life of hunter-gatherers and the settled life of farmers?