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Aleksandr [31]
3 years ago
6

A scientist observes several different fossils in a

Chemistry
1 answer:
Verdich [7]3 years ago
8 0
<h2>Question:</h2>

A scientist observes several different fossils in a

rock layer. Based on this observation, which is

the best conclusion?

<h2>Answer:</h2>

<u>A. The fossils are composed of lava that cooled</u>

<u>A. The fossils are composed of lava that cooledaround several organisms.</u>

<u>B. The fossils formed about the same time as </u><u>the</u><u> </u><u>rock layer in which they were found.</u>

<h2>Explanation:</h2>

That's the right answer but you can choose one.

<h2><u>#CARRYONLEARNING</u><u> </u></h2><h2><u>#STUDYWELL</u><u> </u></h2>

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Which substance/s have covalent bond? Explain your answer.​
Viefleur [7K]
Covalent bonding occurs when electrons are shared between atoms. Double and triple covalent bonds occur when four or six electrons are shared between two atoms, and they are indicated in Lewis structures by drawing two or three lines connecting one atom to another.
4 0
3 years ago
What are geometric isomers?
irina [24]
<span>C. compounds that have the same atoms arranged in the same order, but with different three-dimensional orientations.</span>
3 0
3 years ago
The process of breaking down Glucose and using the energy stored in that molecule for cellular function is known as_____.
Katyanochek1 [597]

Answer:

Cellular respiration.

Explanation:

Through the process of cellular respiration, the energy in food is converted into energy that can be used by the body's cells. During cellular respiration, glucose and oxygen are converted into carbon dioxide and water, and the energy is transferred to ATP.

3 0
3 years ago
What temperature would 3.54 moles of xenon gas need to reach to exert a pressure of 1.57 atm at a volume of 34.6 l
ira [324]

Answer:

186.9Kelvin

Explanation:

The ideal gas law equation is PV = n R T

where

P   is the pressure of the gas

V   is the volume it occupies

n  is the number of moles of gas present in the sample

R  is the universal gas constant, equal to  0.0821 atm L /mol K

T  is the absolute temperature of the gas

Ensure units of the volume, pressure, and temperature of the gas correspond to R ( the universal gas constant, equal to  0.0821 atm L /mol K )

n = 3.54moles

P= 1.57

V= 34.6

T=?

PV = n R T

PV/nR = T

1.57 x 34.6/3.54 x 0.0821

54.322/0.290634= 186.908620464= T

186.9Kelvin ( approximately to 1 decimal place)

5 0
3 years ago
You have 0.14 moles of sodium chloride (NaCl). How many grams do you have? ( 1 mole of NaCl = 58 grams NaCl) *
Step2247 [10]

Answer:

Option D is correct = 8.12 grams of NaCl

Explanation:

Given data:

Moles of sodium chloride = 0.14 mol

Mass of sodium chloride = ?

Solution:

Formula:

Number of moles = mass of NaCl / Molar mass of NaCl

Molar mass of NaCl = 58 g/mol

Now we will put the values in formula.

0.14 mol = Mass of NaCl / 58 g/mol

Mass of NaCl = 0.14 mol  ×  58 g/mol

Mass of NaCl = 8.12 g of NaCl

Thus, 0.14 moles of NaCl contain 8.12 g of NaCl.

4 0
3 years ago
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