3 years ago

What are the group of noges gas?

Chemistry

1 answer:

irina [24]3 years ago

3 0

Noble gases is the farthest right group on the periodic table so like He, Ne, Ar, that column

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What happens to the ice on a frozen lake, when the<br> temperature changes?<br> Uhkhub hbi

Nat2105 [25]

When temperature changes it melts the ice over the lake.

As we know the melting point of ice or water is 0°C or 273K
So if the temperature arises up to 0°C or 273.16K then the ice starts melting .

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3 years ago

In the equation 2 H2 + O2 -> 2H2O, H2, O2, and H2O are all trace elements. Only H2O is a compound. Only H2 and O2 are compoun

stiks02 [169]

Answer: only H2O is a compound

Explanation:

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3 years ago

In the following chemical reaction, what product is represented by X? (Hint: don't forget to criss cross!!!)

Luda [366]

Answer:

Aluminum hydroxide Al(OH)3

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Sodium switches places with Aluminum and the new products are formed.

A balanced equation would look like this.

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3 years ago

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4 years ago

A sample of 8.11 g 8.11 g of solid calcium hydroxide is added to 38.0 mL 38.0 mL of 0.410 M 0.410 M aqueous hydrochloric acid. W

Andrews [41]

Answer:

The balanced chemical equation :

$Ca(OH)_2(s)+2HCl(aq)\rightarrow CaCl_2(aq)+2H_2O(l)$

Explanation:

When calcium hydroxide reacts with hydrochloric acid it gives calcium chloride and water as a products. The chemical equation is given as:

$Ca(OH)_2+2HCl\rightarrow CaCl_2+2H_2O$

According to question, solid calcium hydroxde is added to 38.0 mL of 0.410 M of HCl solution, so the chemical equation can be written as:

$Ca(OH)_2(s)+2HCl(aq)\rightarrow CaCl_2(aq)+2H_2O(l)$

According to stoichiometry, when 1 mole of solid calcium hydroxide reacts with 1 mole of hydrochloric acid to gives 1 mole of aqueous calcium chloride and 1 mole of water.

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3 years ago