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DiKsa [7]
3 years ago
7

Why do some distances have negative values?

Chemistry
1 answer:
Talja [164]3 years ago
3 0

Answer:

distance with a negative value just means that it's going in the opposite direction.

Explanation:

example: -50m East is the just 50m west

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Hydrogen sulfide burns form sulfur dioxide:
Helga [31]

Answer: 404.04 kJ.

Explanation:

To calculate the moles, we use the equation:

\text{Number of moles}=\frac{\text{Given mass}}{\text {Molar mass}}

moles of H_2S

\text{Number of moles}=\frac{26.7g}{34.1g/mol}=0.78moles

2H_2S(g)+3O_2(g)\rightarrow 2SO_2(g)+2H_2O(g)    \Delta H=-1036kJ

According to stoichiometry :

2 moles of H_2S on burning produces = 1036 kJ

Thus 0.78 moles of H_2S on burning produces =\frac{1036kJ}{2}\times 0.78=404.04

Thus the enthalpy change when burning 26.7 g of hydrogen sulfide is 404.04 kJ.

7 0
3 years ago
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GuDViN [60]
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3 0
3 years ago
URGENT!
irga5000 [103]

Answer:

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Explanation:

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7 0
2 years ago
How many grams of H2O would be produced if you started with 7 moles of ethylene (C2H4 )?
nydimaria [60]

Answer:

Explanation:

so if the reaction is C2H4+3O2-->2H2O+2CO2

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(see the attachment)

4 0
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At sea level water blank at 100 degrees celceius
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Boils

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