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Goryan [66]
3 years ago
6

Please help i will mark you

Chemistry
2 answers:
natta225 [31]3 years ago
8 0

Answer:

d. a girl writing with a pen

Explanation:

:)

Bad White [126]3 years ago
7 0

Answer:

an oven cooking food

Explanation:

when it's off it has mechanical energy, when on it has electrical energy transformed to heat energy.

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. For the reaction 2HNO3 + Mg(OH), → Mg(NO3)2 + 2H20, how many grams of magnesium nitrate are produced from 8.00 mol of nitric a
GREYUIT [131]

Mass of Magnesium nitrate produced : 593.2 g

<h3>Further explanation</h3>

The reaction equation is the chemical formula of reagents and product substances

A reaction coefficient is a number in the chemical formula of a substance involved in the reaction equation. The reaction coefficient is useful for equalizing reagents and products.

Reaction

2HNO₃ + Mg(OH)₂ → Mg(NO₃)₂ + 2H₂0

mol HNO₃ = 8

From the equation, mol ratio of HNO₃ : Mg(NO₃)₂ = 2 : 1, so mol Mg(NO₃)₂ :

\tt \dfrac{1}{2}\times 8=4~moles

Mass Mg(NO₃)₂(MW=148,3 g/mol) :

\tt mass=mol\times MW\\\\mass=4\times 148,3 g/mol\\\\mass=593.2~g

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Kinetic energy which a body possesses by virtue of being in motion.
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Svetradugi [14.3K]

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