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NemiM [27]
3 years ago
9

¿Cuál es la razón para que los planetas y los electrones no abandonen sus órbitas saliendo expulsados sin regreso?

Chemistry
1 answer:
bazaltina [42]3 years ago
4 0

Answer:

I wish I could speak Spanish

Explanation:

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Which statement holds true when the molar mass of hydrogen is 2.0 grams and that of helium is 4.0 grams?
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7 0
4 years ago
What pressure (in atmospheres) does a gas exert when at 385 mm of Hg?
Westkost [7]
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6 0
4 years ago
Identify an anion. an atom that has gained a proton. an atom that has gained an electron. an atom that has lost an electron. an
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4 years ago
How do I do letter D? Someone help me please
Minchanka [31]
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8 0
3 years ago
How much heat is released when 6.00 g of methane is combusted using the reaction below? CH4 + 2O2 ? CO2 + 2H2O ?Hrxn = -890. KJ
goblinko [34]

Answer : The amount of heat released is, -121.04 KJ

Solution : Given,

Enthalpy of reaction, \Delta H_{rxn} = -890 KJ

Mass of methane = 6 g

Molar mass of methane = 44 g/mole

First we have to calculate the moles of methane.

\text{Moles of methane}=\frac{\text{Mass of methane}}{\text{Molar mass of methane}}=\frac{6g}{44g/mole}=0.136moles

The given balanced reaction is,

CH_4+2O_2\rightarrow CO_2+2H_2O

From the balanced reaction we conclude that

1 mole of methane releases heat = -890 KJ

0.136 moles of methane releases heat = \frac{0.136moles}{1mole}\times -890KJ=-121.04KJ

Therefore, the amount of heat released is, -121.04 KJ

8 0
3 years ago
Read 2 more answers
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