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professor190 [17]
2 years ago
5

Relative dating determines the relative age of fossils according to

Chemistry
2 answers:
KiRa [710]2 years ago
7 0
The answer Is C.the layer of rock they're found in
nalin [4]2 years ago
7 0

Answer:

C. the layer of rock they're found in, would be the right answer. I hope this helps! :)

Explanation:

I took the test.

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Na+CL2=2NACL is the balanced reaction for the formation of table salt. Given 20 grams of Na and 10 grams of Cl2, which reactant
Elina [12.6K]

Excess reactant : Na

NaCl produced : = 16.497 g

<h3>Further explanation</h3>

Given

Reaction(balanced)

2Na + Cl₂⇒ 2NaCl

20 g Na

10 g Cl₂

Required

Excess reactant

NaCl produced

Solution

mol Na(Ar = 23 g/mol) :

= 20 : 23 = 0.87

mol Cl₂(MW=71 g/mol):

= 10 : 71 g/mol = 0.141

mol : coefficient :

Na = 0.87 : 2 = 0.435

Cl₂ = 0.141 : 1 = 0.141

Limiting reactant : Cl₂(smaller ratio)

Excess reactant : Na

Mol NaCl based on mol Cl₂, so mol NaCl :

= 2/1 x mol Cl₂

= 2/1 x 0.141

= 0.282

Mass NaCl :

= 0.282 x 58.5 g/mol

= 16.497 g

4 0
2 years ago
Why do we need to know these organic molecules? <br>Are they important to living things?​
laila [671]

Answer:

<h2>Organic molecules are important to living things because life is based on the properties of carbon. Carbon is an important element because it can </h2><h2>form four covalent bonds. ... The carbon skeletons contain the functional groups that are involved in biochemical reactions.</h2>

Explanation:

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7 0
3 years ago
Read 2 more answers
A molecule that forms when atoms of the same element bond together is called a(n)________
Mice21 [21]

Answer: element.


Justification:


1) A molecule is the union of two or more atoms.


2) When two or more atoms of different elements bond together, the molecule formed is a compound.


For example: one atoms of hydrogen and one atom of chlorine form the molecule HCl, which is a compound (hydrogen chloride).


3) When the molecules is formed by two atoms of the same element, it is not called a compound, but element. Some examples of this are the diatomic gases:


H₂: hydrogen


Cl₂: chlorine


Br₂: bromine


O₂: oxygen


S₂: sulfur


N₂: nitrogen.

3 0
3 years ago
Read 2 more answers
In Scratch, when making the jump command for a sprite to jump if the space bar is pressed, you place the command outside the hex
Rzqust [24]

Answer:

that would be true you place it outside the hexagon

Explanation:

6 0
2 years ago
A 250 mL sample of nitrogen (N2) has a pressure of 745 mmHgat 30 ∘C. Find the mass<br> .
Anna71 [15]
The question is incomplete. To complete it you must include the moles of N2 and then you can use the ideal gas law to solve for the mass.
5 0
3 years ago
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