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Lera25 [3.4K]
3 years ago
8

Which layers of the earths are common to both the compostitional and mechanical descriptions

Chemistry
1 answer:
Nutka1998 [239]3 years ago
3 0
The correct is answer is c
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If the mass of a liquid reactant is 10g and the mass of a powder reactant is 5g then what should the mass of the product be acco
guapka [62]

Answer:15g

Explanation:

According to the law of conservation of mass, the mass of the products in a chemical reaction must equal the mass of the reactants.

10g + 5g ➡️ 15g

6 0
3 years ago
Which has the greater concentration of hydrogen ions, a substance with a pH of 5 or a substance with a pH of 4?
evablogger [386]

Answer:

pH 4

Explanation:

Firstly, we define pH as the negative logarithm to base 10 of the concentration of hydrogen ions.

Mathematically, we express this as:

pH = -log[H+]

Now let’s us calculate the concentration of hydrogen in each of the pH

For pH 4, we have:

4 = -log[H+]

[H+] = -Antilog(4)

[H+] = 0.0001M

For pH 5,

[H+] = -Antilog(5)

[H+] = 0.00001M

We can see that 0.0001 is greater than 0.00001 and thus it has a greater concentration of hydrogen ions

4 0
3 years ago
In a plant, roots absorb water and nutrients. Those materials are then transported to other parts of the plant. Which statements
Fiesta28 [93]
C is the correct anwser 
8 0
3 years ago
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A student measures out 5 mL of calcium chloride solution into a small container and 5 mL of sodium carbonate solution in another
qwelly [4]

Answer:

15.5g

Explanation:

"The total mass of both chemicals and the containers they are in is 15.5 g." After a chemical reaction, by conservation of mass, the total mass of the products and the two containers after reaction is the same at 15.5g.

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3 years ago
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Changes in DNA are known as mutations and can be sometimes produce beneficial changes in population. A mutant form of the normal
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The dark colored moths are beneficial in a polluted area because they have a lesser chance of being eaten since they blend into the trees polluted with soot. 
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