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3241004551 [841]
3 years ago
9

Neeeeeeeeed helppppppp.......will mark brainiest

Chemistry
1 answer:
aalyn [17]3 years ago
6 0

Answer:

senses are used to messages away from the cell body of neuron

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Which two pieces of evidence support the conclusion that the total amount of energy in a closed system remains the same?
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A,C

Explanation:

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3 years ago
3 Cu + 8HNO3 g 3 Cu(NO3)2 + 2 NO + 4 H2O
liubo4ka [24]

24.25 moles of NO can be produced using 97 moles of HNO3.

<h3>What is balanced chemical equation?</h3>

Equal numbers of atoms from various elements are present in both the reactants and the products in balanced chemical equations. Varied elements' atom counts in the reactants and products of unbalanced chemical equations are different.

3 Cu + 8HNO3 g → 3 Cu(NO3)2 + 2 NO + 4 H2O

The number of moles consumed can be calculated using comparing with coefficients in the balanced reaction .

So , from above eq we get that 8 moles of HNO3 are consumed to make 2 moles of NO.

⇒  8 HNO3⇔2 NO

⇒ 1 HNO3⇔ 1/4 NO

This means that for each mole of HNO3 produces 1/4 moles of NO.

So , for 97 moles of HNO3 , \frac{1}{4}  *97 moles of NO can be made,

So, total moles of NO made are 24.25 moles.

Lean more about balanced reactions here brainly.com/question/26694427

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2 years ago
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IgorLugansk [536]

Answer: the pH moves to 0 on the pH scale

Explanation:

A base is defined as a substance which donates hydroxide ions when dissolved in water and an acid is defined as a substance which donates hydrogen ions in water.

Neutralisation reaction  is defined as the chemical reaction in which an acid reacts with a base to produce a salt and water molecule. The H^+ ions from acid are neutralised by OH^- ions from base.

Acids have pH ranging from 1 to 6.9, bases have pH ranging from 7.1 to 14 and neutral solutions have pH of 7.

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Continental air mass, vast body of air that forms over the interior of a continent, excluding mountainous areas. See air mass.

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