Can sum1 help me ????

Chemistry

1 answer:

xeze [42]3 years ago

8 0

Answer:

The principle of superposition states that the oldest sedimentary rock units are at the bottom, and the youngest are at the top. Based on this, layer C is oldest, followed by B and A. hope that helps

Explanation:

A=top

B=middle

C=bottom

You might be interested in

Do you think creativity can contribute to scientific inquiry and investigation? Provide an example and explain your answer.

frez [133]

Creativity is often defined as the ability to generate innovative ideas and manifest them from thought into reality. Any science experiment that is being done for the first time is creative because it's an innovative idea that's being transformed into reality by creating/doing the experiment.

8 0

4 years ago

How many protons, neutrons, and electrons are in an atom of beryllium with a mass number of 9?

ki77a [65]

Answer:

c / a

correct me if im wrong

7 0

3 years ago

Read 2 more answers

If the a of a monoprotic weak acid is 1. 2×10^−6. What is the [H] of a 0. 31 m solution of this acid?

Vanyuwa [196]

The pH of the solution of the given acid is 3.099

Let HX be the weak acid:

HX ⇌ $H^{+}$ + $X^{-}$

For which:

$K_{a}$ = [ $H^{+}$ ][ $X^{-}$ ] / [HX]

If $K_{a}$ lies in the range $10^{-4} - 10^{-10}$ we can assume that the equilibrium concentrations used in the expression are a good enough approximation to the initial concentrations.