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3 years ago

Atoms join together to form compounds by gaining losing or sharing

Chemistry

2 answers:

Y_Kistochka [10]3 years ago

8 0

It is sharing (i could be wrong so be cautious of your answer) <span />

Brrunno [24]3 years ago

3 0

Answer:

electrons

Explanation:

Some electron arrangements are more stable than others, which is why atoms often gain, lose, or share electrons with other atoms. This transfer or sharing of electrons forms chemical bonds that unite atoms in compounds.

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Using the following equation for the combustion of octane, calculate the heat associated with the combustion of 100.0 g of octan

Sonja [21]

Answer: B) -4819 kJ

Explanation:

The balanced reaction for combustion of octane is:

$2C_8H_{18}+25O_2\rightarrow 16CO_2+18H_2O$ $\Delta H^0_{rxn}=-11018kJ$

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

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

given mass of octane = 100.0 g

Molar mass of octane = 114.33 g/mol

Putting in the values we get:

$\text{Number of moles}=\frac{100.0g}{114.33g/mol}=0.8747moles$

According to stoichiometry:

2 moles of octane give heat = -11018 kJ

Thus 0.8747 moles of octane give = $\frac{-11018}{2}\times 0.8747=-4819kJ$

Thus -4819 kJ of heat is released by 100.0 g of octane assuming complete combustion.

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4 years ago

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A yellow element stinks when burned

Ivenika [448]

Sulfur smells like rotten egg and is yellow...

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3 years ago

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Paraphin [41]

Answer:

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Explanation:

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3 years ago

How are elements and compounds alike

Ad libitum [116K]

Both elements and compounds are pure substances. While elements are not made of simpler substances, compounds are made up of two or more chemical elements that are chemically combined.

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What is T in the equation G = H - TS?

stellarik [79]

I think it’s A good luck on the answer if it’s not but I’m pretty sure it’s A .

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