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Mashutka [201]
2 years ago
8

What is the color of the flame when magnesium burns in air ​

Chemistry
1 answer:
vfiekz [6]2 years ago
6 0

Answer:

Will u give me brainliest

white

In its pure form, it is silvery white, and relatively soft. It burns in air with a brilliant white light, and for this reason is often used in flares and fireworks. Magnesium is used in disposable flash bulbs to generate light for photography, but this use has been largely supplanted by other sources of illumination

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Using the balanced equation below,
Zielflug [23.3K]

Answer:

Mass = 6.538 g

Explanation:

Given data:

Mass of zinc hydroxide produced = 9.65 g

Mass of zinc required = ?

Solution:

Chemical equation:

Zn + 2MnO₂ + H₂O      →      Zn(OH)₂ + Mn₂O₃

Number of moles of zinc hydroxide:

Number of moles = mass/molar mass

Number of moles = 9.65 g/ 99.42 g/mol

Number of moles = 0.1 mol

now we will compare the moles of zinc and zinc hydroxide,

                  Zn(OH)₂           :          Zn

                       1                  :          1

                    0.1                  :         0.1

Mass of zinc required:

Mass = number of moles × molar mass

Mass = 0.1 mol × 65.38 g/mol

Mass = 6.538 g

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3 years ago
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How are all atoms of silver alike, but different from atoms of other elements?
andriy [413]

B. All atoms of silver have the same atomic number but different numbers of neutrons in the nucleus.

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2 years ago
Convert the pressure 525.4 torr to kPa.
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Answer:

Option A. 70.0 KPa.

Explanation:

Data obtained from the question include:

Pressure (torr) = 525.4 torr

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The pressure expressed in torr can be converted kPa as shown below:

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Therefore,

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Therefore, 525.4 torr is equivalent to 70.0 KPa.

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