What main criterion determines major divisions in the geologic time scale?

Chemistry

1 answer:

koban [17]3 years ago

4 0

The answer is B. the occurrence of huge events in Earth's natural history

The geologic time scale is a system of chronological dating that relates geological strata to time. It is used by geologists, paleontologists, and other Earth scientists to describe the timing and relationships of events that have occurred during Earth's history.

You might be interested in

HURRY !The number of electrons in an atom decreases as you move from left to right in the periodic table.

grin007 [14]

Answer:

false

Explanation:

5 0

3 years ago

Read 2 more answers

How many hydrogen atoms are contained in 0.40 mL of water, given that the density of water is 1 g/ml?

Paladinen [302]

Answer:

2.676e22 atoms of Hydrogen

Explanation:

Knowing the density of water is 1g/ml, 1(g/ml)*0.4ml=0.4 grams of H2O. Knowing that there are 16 grams of H2O in 1 mole of H2O, we can set up a unit conversion of 0.4 Grams H2O * $\frac{1 mol H_2O}{18 grams H_2O}*\frac{2 mol H}{1 mol H_2O} *\frac{6.022e23 atoms of H}{1 mol H}$ =

2.676e22 atoms of Hydrogen.

3 0

2 years ago

If 33.9 ml of h3po4 neutralizes 23.4 ml of 2.28 m koh, what is the molarity of the phosphoric acid?

SpyIntel [72]

Answer: 1.57 M

Explanation:

$M_{A}V_{A}=M_{B}V_{B}\\(33.9)M_{A}-=(23.4)(2.28)\\M_{A}=\frac{(23.4)(2.28)}{33.9}=\boxed{1.57 \text{ M}}$

7 0

1 year ago

How would you explain the Earth’s atmosphere?

CaHeK987 [17]

<span>The atmosphere is a thin layer of gases that surrounds the Earth. It seals the planet and protects us from the vacuum of space. It protects us from electromagnetic radiation given off by the Sun and small objects flying through space such as meteoroids.</span><span>

So it's like a blanket protecting us but it has air hole/patches where sunlight can get through</span>

4 0

3 years ago

How many moles of oxygen would be required to produce 5 mol of water? (Remember sig figs)

Vikki [24]

Answer:

Since moles are just "some number of particles", and since one O2 molecule contains enough oxygen for two H2O molecules, you need 2.5 moles of O2 for 5 moles of H2O.

7 0

2 years ago