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2 years ago

Why do scientists think the Grand Canyon was once covered by an ocean? (1 point)

Chemistry

1 answer:

PIT_PIT [208]2 years ago

4 0

Seawater found to be seeping up through the canyon floor is why

scientists think Grand Canyon was once covered by an ocean.

Grand cayon is located in Arizona, United States and comprises of a lot of

fossil records and rocks which makes it one of the best sites for geological

study.

The Grand cayon was found to be seeping through its floor which made

scientists think it was once covered by an ocean years ago.

Read more about Grand cayon on brainly.com/question/20629780

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1. If 80.0 ml of 3.00 M HCl is used to make a 100. ml of dilute acid, what is the molarity

Aleonysh [2.5K]

<u>We are given:</u>

M1 = 3 Molar V1 = 80 mL

M2 = x Molar V2 = 100 mL

<u>Finding the molarity:</u>

We know that:

M₁V₁ = M₂V₂

where V can be in any units

(3)(80) = (x)(100)

x = 240/100 [dividing both sides by 100]

x = 2.4 Molar

3 0

3 years ago

How many moles of sulfur dioxide are in 2.26x10^33 sulfur dioxide molecules?

Alexus [3.1K]

Answer:moles = no. of molecules / Avogadro's number

= 2.26 x 10^33 / 6.022 x 10^23

= 3752906011

Round to significant figures which is 3 = 3.75 x 10^9 mol

Explanation:

The formula for finding how many moles of a substance when given the amount of molecules is: moles = number of molecules / Avogadro's number

3 0

3 years ago

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I'll GIVE YOU THE BRAINLIEST!!!!!!!!!!!!!!!!!!!!

ahrayia [7]

Sea arch, headland, sea cave, cliff, sea stack sorry if I’m wrong hope this helped

3 0

3 years ago

How many TOTAL atoms are contained in 10 molecules of TNT, C7H5N3O6?

nlexa [21]

Answer:7 atom of carbon+5atom of hydrogen +3atom of nitrogen +6 atom of oxygen =21

5 0

3 years ago

The atom with the same number of neutrons as 12C is 9Be. 11B. 13C. 14N.

julia-pushkina [17]

Answer : The atom with the same number of neutrons as $^{12}C$ is, $^{11}B$

Explanation :

The given atom is, $^{12}C$

Atomic mass number = 12

Atomic number = 6

Atomic number = Number of protons = Number of electrons = 6

Number of neutrons = Atomic mass number - Atomic number = 12 - 6 = 6

Now we have to determine the number of neutrons in the given options.

In atom, $^{9}Be$

Atomic mass number = 9

Atomic number = 4

Atomic number = Number of protons = Number of electrons = 4

Number of neutrons = Atomic mass number - Atomic number = 9 - 4 = 5

In atom, $^{11}B$

Atomic mass number = 11

Atomic number = 5

Atomic number = Number of protons = Number of electrons = 5

Number of neutrons = Atomic mass number - Atomic number = 11 - 5 = 6

In atom, $^{13}C$

Atomic mass number = 13

Atomic number = 6

Atomic number = Number of protons = Number of electrons = 6

Number of neutrons = Atomic mass number - Atomic number = 13 - 6 = 7

In atom, $^{14}N$

Atomic mass number = 14

Atomic number = 7

Atomic number = Number of protons = Number of electrons = 7

Number of neutrons = Atomic mass number - Atomic number = 14 - 7 = 7

Therefore, the atom with the same number of neutrons as $^{12}C$ is, $^{11}B$

6 0

3 years ago