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USPshnik [31]
3 years ago
15

2H2 + O2 2H2O

Chemistry
1 answer:
Licemer1 [7]3 years ago
5 0

Answer:

c ) 8

Explanation:

Given data:

Number of moles of water produced = ?

Moles of hydrogen react = 8 mol

Solution:

Chemical equation:

2H₂ + O₂     →     2H₂O

Now we will compare the moles of hydrogen and water.

         H₂          :         H₂O

          2          :            2

         8           :           8

Thus, 8 moles of water will produced.

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2. Find the empirical formula for a compound which contains 32.8% chromium and 67.2%<br> chlorine.
Blababa [14]

The empirical formula is CrCl₃.

Explanation:

To find the empirical formula we use the following algorithm.

We divide each percentage by the atomic weight of each element:

for Cr   32.8 / 52 = 0.63

for Cl   67.2 / 35.5 = 1.89

The result will be divined by the smallest number:

for Cr    0.63 / 0.63 = 1

for Cl     1.89 / 0.63 = 3

The empirical formula is CrCl₃.

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empirical formula

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6 0
4 years ago
Which statement best describes how an electromagnetic motor works?
inn [45]

Answer:

Electrons are moved through a magnet, creating a current. That current interacts with a circuit, moving the conductor in the orientation of the field.

Explanation:

Electro magnetic fields are used to create electric current by the movement of electrons. When a coil of wire is wrapped around a magnet it pushes electrons and they flow through a magnet to create current. This current interacts with circuit to move conductor.

5 0
3 years ago
H2 H2O H2O2 CH4 All four examples represent
miv72 [106K]
It is covalent  bonds
8 0
3 years ago
Read 2 more answers
Gallium is produced by the electrolysis of a solution obtained by dissolving gallium oxide in concentrated NaOH(aq). Calculate t
zlopas [31]
Ga₂O₃ + 2NaOH + 3H₂O = 2Na[Ga(OH)₄]

[Ga(OH)]⁻ + 3e⁻ = Ga + 4OH⁻

n(Ga)=It/(zF)

I=0.200 A
t=40.0 min=2400 s
z=3
F=96485.33 Kl/mol

n(Ga)=0.200*2400/(3*96485.33)=0.00166 =1.66*10⁻³ mol
8 0
3 years ago
What is an iron nail ?
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Formerly made of bronze or wrought iron, today's nails are typically made of steel, often dipped or coated to prevent corrosion in harsh conditions or to improve adhesion.
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3 years ago
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