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shusha [124]
3 years ago
5

The element hydrogen contains particles of

Chemistry
1 answer:
TEA [102]3 years ago
7 0

Answer:

B. hydrogen only.

Explanation:

The element hydrogen is a made up of only hydrogen atoms which are the particles in the element.

Hydrogen is an element. It has distinct hydrogen atoms that typifies it.

  • Water and carbon is not a hydrogen element. They contain hydrogen, oxygen and carbon.

An element is a distinct substance that is made up of one kind of atom. The only kind of atom in element hydrogen is those hydrogen itself.

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Which pair of substances would most likely result in the production of a gas when reacting with an acid?
vovangra [49]

Answer: metal and carbonate

Explanation:

According to Arrhenius concept, a base is defined as a substance which donates hydroxide ions (OH^-) when dissolved in water and an acid is defined as a substance which donates hydrogen ions (H^+) in water.

An acid is represented as :

HX\rightarrow H^++X^-

1. When metal is treated with an acid such as HCl, if the metal is more reactive than hydrogen displaces hydrogen from its salt solution and thus produce zinc chloride and hydrogen gas.

M+xHCl(aq)\rightarrow MCl_x(aq)+xH_2(g)

2. When carbonates are treated with acid, double displacement takes place ad carbon dioxide is released as a gas.

MCO_3(aq)+xHCl(aq)\rightarrow MCl_x(aq)+xH_2O(l)+CO_2(g)

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castortr0y [4]
Where is the venn diagram?
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What is the change of state from solid to gas called?
maxonik [38]

Your answer is C. Sublimation :)(

5 0
3 years ago
Match the term with its description.
Inga [223]
A(A compound that increases the hydroxide ions (OH−) when it is dissolved in a solution)-alkaline
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3 years ago
For a second order reaction, the half-life is equal to:_____.
gtnhenbr [62]

Answer:

Half life = 1 / k[Ao]

Explanation:

From:

1/ [A] = kt + 1/ [Ao]

Isolating t on its own, we have:

kt = 1 / [A] - 1 / [Ao]

t = 1 / [Ao] / k

Re-arranging we have:

t = 1 / k [Ao]

The t represents the t=half life of the second order reaction and the formula can be re-written as:

t1/2 = 1 / k [Ao]

This is so because second order reaction decreases at a much faster rate than zero and first order reactions and there slopes decreases to zero at a much faster rate.

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