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kirza4 [7]
3 years ago
6

Es

Chemistry
1 answer:
babunello [35]3 years ago
8 0

The correct answer is Chemical energy changes to mechanical energy. Chemical energy in the battery powers the mechanical fan. ON USA TEST PREP!!!!!

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Cuando se trata Ca3P2 con agua, los productos son Ca(OH)2 y PH3. Calcular el peso máximo obtenido al reaccionar 2 g de Ca3P2 con
anyanavicka [17]

Answer:

0.629 gramos de PH3 es la máxima de cantidad que puede ser producida.

Explanation:

¡Hola!

En este caso, dado que tenemos la siguiente reacción química, la cual se puede balancear directamente:

Ca_3P_2+6H_2O\rightarrow 3Ca(OH)_2+2PH_3

Podemos calcular la masa máxima de cualquier producto, digamos PH3, al comparar la masa de este, que 2 g the Ca3P2 y 1 g de H2O producen por separado y de acuerdo a la estequiometría:

2gCa_3P_2 *\frac{1molCa_3P_2 }{182.18gCa_3P_2 }*\frac{2molPH_3}{1molCa_3P_2 }  *\frac{34gPH_3}{1molPH_3 } =0.747gPH_3\\\\1gH_2O *\frac{1molH_2O }{18.02gH_2O}*\frac{2molPH_3}{6molH_2O}  *\frac{34gPH_3}{1molPH_3 } =0.629gPH_3

De este modo, infermos que solamente 0.629 gramos the PH3 pueden ser obtenidos al ser el agua el reactivo límite.

¡Saludos!

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The __________________ is the process by which gases in the atmosphere absorb and reradiate heat.
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Greenhouse effect

Explanation:

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Select all that apply.
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Atom: An atom is the smallest particle of any element. It is the building block of matter and is composed of three subatomic particles that is electron, proton, and neutron.

Molecular compound: Compounds that are made up of covalent bonds that is by sharing of electrons between the atoms are said to be molecular compounds. Due to weak force of attraction between them that is covalent bond they exist in gas form.

Element: Substance that is made up of single type of atom only are said to be element.

Mixture: Combination of two or more substances in which each substance retains its identity is known as mixture.

Molecule: When two or more atoms combine together and form a substance which has completely new properties is said to be a molecule.

Since, CO_2 has two different types of elements that is carbon, C and oxygen, O which combine in 1:2 ratio by sharing of electrons between them and results in the formation of molecular compound.

Hence, CO_2 is an example of a molecular compound.

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