Which is not a characteristic of minerals

1 answer:

6 0

I think d is wrong because Everything else is correct for sure. also, minerals vary in the position they hold and have different chemical compounds.

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The answer is C: How long does it take distilled water to evaporate from a 5” diameter container?

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2 years ago

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Which of the following instruments is a combination of a percussion and a stringed instrument?

murzikaleks [220]

Answer:B

Explanation:

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2 years ago

Why might people add a base to an acidic lake?

spayn [35]

Answer:

To decrease the algae

Explanation:

Acid lakes have more algae than other lakes

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2 years ago

In the following overall chemical reaction, aluminum displaces chromium from chromium(III) oxide and forms aluminum oxide.

mafiozo [28]

Answer:

Change in enthalpy for the reaction is -536 kJ

Explanation:

Overall chemical reaction can be represented a summation of two given elementary steps with slight modification.
Take reaction (1a) and divide stoichiometric coefficients by 2
Take reverse reaction (2a) and divide stoichiometric coefficient by 2
Then add these two modified elementary steps to get overall chemical reaction
$\Delta H$ is an additive property. hence value of $\Delta H$ will be changed in accordance with modification

$2Al+\frac{3}{2}O_{2}\rightarrow Al_{2}O_{3}.....\Delta H_{1}=\frac{-3351.4}{2}kJ=-1675.7kJ$

$Cr_{2}O_{3}\rightarrow 2Cr+\frac{3}{2}O_{2}....\Delta H_{2}=\frac{2279.4}{2}kJ=1139.7kJ$

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$2Al+Cr_{2}O_{3}\rightarrow 2Cr+Al_{2}O_{3}....\Delta H=\Delta H_{1}+\Delta H_{2}=-1675.7+1139.7kJ=-536kJ$

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3 years ago

Predict the products of the thermal decomposition of strontium nitrate and show the reaction as a word equation.

Schach [20]

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Explanation:

2SrO + 4NO2 + O. The thermal decomposition of strontium nitrate to produce strontium oxide, nitrogen dioxide and oxygen. This reaction takes place at a temperature of over 570°C

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2 years ago