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ratelena [41]
2 years ago
14

PLEASE HELP ME I WILL BRAINLIST YOU AND GIVE YOU POINTS ​

Chemistry
2 answers:
MissTica2 years ago
8 0

Answer:

Carbon 12 and carbon 13

Carbon isotope 12 exist as 98.9%

Explanation:

Pachacha [2.7K]2 years ago
6 0

Answer:

Y is 98.9 which is the answer for Y.

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If antique brass is 30.0% zinc and 70.0% copper, how many grams of antique brass can be made from 18.0 grams of zinc and 32.8 gr
wariber [46]

Answer: 51.86

Explanation:

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2 years ago
The anther of flower contains​
Hatshy [7]

Answer:

here is your answer please mark me as brainlist

Explanation:

Answer # Stamen: The pollen producing part of a flower, usually with a slender filament supporting the anther. Anther: The part of the stamen where pollen is produced. Pistil: The ovule producing part of a flower. The ovary often supports a long style, topped by a stigma.

7 0
3 years ago
Describe endothermic vs. exothermic reactions in terms of product formation. (hint: what happens when products are formed?)
shusha [124]

Answer:

Endothermic reaction chemical equation

Reactnt A + Reactant B + Heat (energy) ⇒ Products

Exothermic reaction chemical equation

Reactnt A + Reactant B ⇒ Products + Heat (energy)

Explanation:

Endothermic Reaction

An endothermic reaction is a reaction that reaction that requires heat before it would take place resulting in the absorption of heat from the surrounding that can be sensed by the coolness of the reacting system

An example of an endothermic reaction is a chemical cold pack that becomes cold when the chemical and water inside it reacts

Exothermic Reaction

An exothermic reaction is one that rekeases energy to the surroundings when it takes place. This is as a result of the fact that the combined heat energy of the reactants is more than the chemical heat energy of the products. An example of an exothermic reaction is a burning candle

5 0
2 years ago
Which electron configuration represents a violation of the pauli exclusion principle?
Katarina [22]
<span>The electron configuration that represents a violation of the pauli exclusion principle is:

</span><span>1s: ↑↓ 
2s: ↑↑ 
2p: ↑</span>
The Pauli exclusion principle  refers to the quantum mechanical rule which expresses that at least two indistinguishable fermions (the particles with half-integer spin) can't involve a similar quantum state inside a quantum framework all the while.
7 0
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____________ enables you to ride a bike without skidding and falling.
Marina86 [1]
Sliding or rolling friction
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