3 years ago

Atoms of elements in group 1 have?

Chemistry

1 answer:

VLD [36.1K]3 years ago

5 0

Answer:

One valence electrons and are the most reactive.

Explanation:they are the alkali metals.

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balu736 [363]

The answer would be D. (The 4th one listed).
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Draw the product of the hydrogenation of cis-2-pentene. draw all hydrogen atoms. g

Snowcat [4.5K]

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.....….....…!…………………................................<br> ???

seropon [69]

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The reaction of hydrogen sulfide(g) with oxygen(g) to form water(l) and sulfur dioxide(g) proceeds as follows: 2H2S(g) 3O2(g)2H2

Aleks [24]

Answer: The value of $\Delta H$ is 1118 .

Explanation:

To calculate the number of moles, we use the equation:

$\text{Moles of solute}=\frac{\text{given mass}}{\text{molar mass}}$

$\text{Moles of} H_2S}=\frac{9.82g}{34.1g/mol}=0.288mol$

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$2H_2S(g)+3O_2(g)\rightarrow 2H_2O(l)+2SO_2(g)$

Given :

Energy released when 0.288 mole of $H_2S$ is reacted = 161 kJ

Thus Energy released when 2 moles of $H_2S$ is reacted = $\frac{161}{0.288}\times 2=1118kJ$

Thus the value of $\Delta H$ is 1118.

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3 years ago