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Chemistry

1 answer:

sergeinik [125]2 years ago

5 0

Answer:

B. Extreme heat and pressure.....

Explanation:

This is how sedimentary rocks are actually made. I had learned recently in my class about these rocks, and my teacher told that these are made by heat and pressure. And these are the types of rocks that you'll find in canyons for example Grand Canyon.

You know that when something gets pressurized then it changes shape, same for rocks, if they're having lots of pressure on them, then they will also basically turn into newer rocks and also change shape. They also change looks because sedimentary rocks don't look like any other type of rock.

Also, heat can also be found in the crust of the earth since there is the Mantle under the crust which is filled up of MAGMA! (supa hot magma!! woohoo!) And also, because all of the dirt and stuff underground is packed together, the friction can also create heat. As you know, heat makes things expand, you might have done this before.... when you learned about hot and cold gas, you might have also learned that hot gases are more larger, and require more volume than cold gas. That means that the size of the object changes, that too, it's not just for gas, it's for everything, including rocks!.

Hence, your answer is B. Extreme heat and pressure from inside the earths surface......

Have a great day!

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How many molecules of isopently acetate C7H1402 are released (1x10^ -6g) in a typical bee sting

sashaice [31]

The number of molecules of isopently acetate is 4.63 x 10¹⁵ molecules

calculation

Step 1: find the moles of isopently acetate( C₇H₁₄O₂)

moles = mass÷ molar mass

From periodic table the molar mass of C₇H₁₄O₂

= (12 x7 ) + (1 x14) +(16 x2) =130 g/mol

moles = 1 x10⁻⁶ g÷ 130 g/mol = 7 x 10⁻⁹ moles

step 2 ; use the Avogadro's law constant to calculate the number of molecules

That is according to Avogadro's law 1 mole = 6.02 x 10²³ molecules

7 x 10⁻⁹ moles = ? molecules

by cross multiplication

= { (7 x 10⁻⁹ moles x 6.02 x10²³ molecules) / 1 mole} = 4.63 x 10¹⁵ molecules

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3 years ago

How many grams is 2.393 x 10^24 atoms of CI

Iteru [2.4K]

Answer:

There are 140.9 grams in 2.393*10²⁴ aotms of Cl.

Explanation:

Avogadro's Number or Avogadro's Constant is called the number of particles that make up a substance (usually atoms or molecules) and that can be found in the amount of one mole of said substance. Its value is 6.023*10²³ particles per mole. Avogadro's number represents a quantity without an associated physical dimension, so it is considered a pure number that allows describing a physical characteristic without an explicit dimension or unit of expression. Avogadro's number applies to any substance.

Then you can apply the following rule of three: if 6.023*10²³ atoms are contained in 1 mole of the compound, 2.393*10²⁴ atoms are contained in how many moles?

$amount of moles=\frac{2.393*10^{24} *1 mole}{6.023*10^{23} }$