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HACTEHA [7]
3 years ago
7

I NEED ANSWERS NOW!!!!!!!!!!

Chemistry
1 answer:
frosja888 [35]3 years ago
8 0
Emend ended down dbdjdjdbdjejfjfjf f f diff
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¿por qué la química es considerada una ciencia natural?​
cricket20 [7]
A la química a veces se le llama "la ciencia central", porque une la física con otras ciencias naturales, como la geología y la biología. La química es el estudio de la materia y sus propiedades.




Mi mala si esto no ayuda
8 0
3 years ago
How many moles of HNO3 are present if 4.90×10−2 mol of Ba(OH)2 was needed to neutralize the acid solution?
Amiraneli [1.4K]

Answer:

0.098 moles

Explanation:

Let y represent the number of moles present

1 mole of Ba(OH)₂ contains 2 moles of OH- ions.

Hence, 0.049 moles of Ba(OH)2 contains y moles of OH- ions.

To get the y moles, we then do cross multiplication

1 mole *  y mole = 2 moles * 0.049 mole

y mole = 2 * 0.049 / 1

y mole =  0.098 moles of OH- ions.

1 mole of OH- can neutralize 1 mole of H+

Therefore, 0.098 moles of HNO₃ are present.

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4 years ago
Gases in the atmosphere that trap solar energy
Korolek [52]

Answer:

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Explanation:

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Answer:

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