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3 years ago

Oxygen, hydrogen, and water are substances. which of these substances are elements

Chemistry

1 answer:

m_a_m_a [10]3 years ago

8 0

The substances Oxygen and Hydrogen are elements.

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If 4.5 moles of AlCl3 were made, how many moles of CuCl2 were used?

Troyanec [42]

Answer:

6.75 moles of CuCl₂ were used

Explanation:

Given data:

Number of moles of AlCl₃ formed = 4.5 mol

Number of moles of CuCl₂ used = ?

Solution:

Chemical equation:

3CuCl₂ + 2Al → 2AlCl₃ + 3Cu

Now we will compare the moles of CuCl₂ and AlCl₃

AlCl₃ : CuCl₂

2 : 3

4.5 : 3/2×4.5 = 6.75

6.75 moles of CuCl₂ were used.

7 0

2 years ago

In glycolysis, what starts the process of glucose breakdown?

Lostsunrise [7]

Answer:

That would be ATP, hope this helps! :)

6 0

2 years ago

What is activation energy

ANTONII [103]

Answer:

the minimum quantity of energy which the reacting species must possess in order to undergo a specified reaction.

Explanation:

7 0

3 years ago

Read 2 more answers

Hbr(aq)+h2o(l)→h3o+(aq)+br−(aq) express your answers as a chemical expressions. enter your answers in order given in the questio

tamaranim1 [39]

This is an incomplete question, here is a complete question.

For each reaction, identify the Bronsted-Lowry acid, the Bronsted-Lowry base, the conjugate acid, and the conjugate base.

$HBr(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+Br^-(aq)$

Express your answers as a chemical expressions. Enter your answers in order given in the question separated by commas.

Answer : The given equilibrium reaction will be,

$HBr(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+Br^-(aq)$

Acid Base Conjugate Conjugate

acid base

Explanation :

According to the Bronsted Lowry concept, Bronsted Lowry-acid is a substance that donates one or more hydrogen ion in a reaction and Bronsted Lowry-base is a substance that accepts one or more hydrogen ion in a reaction.

Or we can say that, conjugate acid is proton donor and conjugate base is proton acceptor.

The given equilibrium reaction will be,

$HBr(aq)+H_2O(l)\rightleftharpoons H_3O^+(aq)+Br^-(aq)$

Acid Base Conjugate Conjugate

acid base

In this reaction, $HBr$ is an acid that donate a proton or hydrogen to $H_2O$ base and it forms $Br^-$ and $H_3O^+$ are conjugate base and acid respectively.

8 0

3 years ago

What will occur when a population grows large than the carrying capacity of its environment

MissTica

Answer:

If the resources they need are not being refilled fast enough, the population will decrease.

Explanation:

If resources are being used faster than they are being replenished, then the species has exceeded its carrying capacity. If this occurs, the population will then decrease in size.

5 0

3 years ago