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anyanavicka [17]
3 years ago
8

Two atoms have the same number of protons but different numbers of neutrons. What can you conclude about these two atoms? A-they

are the same element B-they are the same isotope C-they have the same mass D-thay have the same charge.
Chemistry
2 answers:
Mice21 [21]3 years ago
5 0
Since the two atoms have the same number of protons they are the same element. The fact that they have different numbers of neutrons makes them isotopes. The best answer is A.
olya-2409 [2.1K]3 years ago
5 0

Answer: A-they are the same element

Explanation: An element is characterized by its atomic number or the number of protons.

Two atoms having the same number of protons but different numbers of neutrons will have same atomic number but different mass number.Thus they are isotopes of the same element.

As Atomic number = Number of protons

Mass number = number of protons + number of neutrons

For example: _1^1H and _1^2H  are both isotopes of Hydrogen with same number of protons but different number of neutrons.


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Which of these form an ionic bond
zhenek [66]

Answer:

the second 1

Explanation:

7 0
2 years ago
Mass box A = 10 grams; Mass box B = 5 grams; Mass box C—made of one A and one B How many boxes of B would be required to make 30
Iteru [2.4K]
Mass box C is 10+5. (So C is 15)

But if C was 30, how many times could you put B (5) into it?

30/5 = 6

You would need 6 boxes of B to make 30 grams of C.
5 0
3 years ago
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_______ is the formation of alcohol from sugar.
Katarina [22]
The best and most correct answer among the choices provided by the question is the fourth choice "alcoholic fermentation"

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I hope my answer has come to your help. God bless and have a nice day ahead!
7 0
3 years ago
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The law of conservation of mass is applicable to
katrin2010 [14]

Answer:

The law of conservation of mass states that in a closed system, mass is neither created nor destroyed during a chemical or physical reaction. The law of conservation of mass is applied whenever you balance a chemical equation.

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.

The law of conservation of mass is useful for a number of calculations and can be used to solve for unknown masses, such the amount of gas consumed or produced during a reaction.

It is applicable in a chemical when the the mass of the products in a chemical reaction is equal to  the mass of the reactants.

But it is not applicable in a nuclear fusion as some of the mass is generated as energy.

3 0
3 years ago
Please help me with this chemistry problem
Margarita [4]

Answer:

50 g of K₂CO₃ are needed

Explanation:

How many grams of K₂CO₃ are needed to make 500 g of a 10% m/m solution?

We analyse data:

500 g is the mass of the solution we want

10% m/m is a sort of concentration,  in this case means that 10 g of solute (K₂CO₃) are contained in 100 g of solution

Therefore we can solve this, by a rule of three:

In 100 g of solution we have 10 g of K₂CO₃

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6 0
3 years ago
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