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Vlad1618 [11]
4 years ago
11

The emission spectrum of hydrogen consists of several lines. Which line has the highest frequency?

Chemistry
1 answer:
solong [7]4 years ago
8 0

Answer:

  410 nm

Explanation:

The highest frequency is associated with the shortest wavelength. Of those listed, 410 nm is the shortest.

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When magnesium combines with sulfur to form magnesium sulfide, it is oxidized to Mg2+. Which statement is true about this reacti
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<h3><u>Answer;</u></h3>

B. It involves loss of electrons.

<h3><u>Explanation;</u></h3>
  • Oxidation occurs when electrons are lost by an atom while reduction refers to the gain of electrons by an atom.
  • <u><em>In this case, magnesium atom reacts with sulfur to form magnesium sulfide by loosing two electrons and forming magnesium ion (Mg2+). Therefore magnesium undergoes oxidation.</em></u>
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What year did mendeleev organized his periodic table in order of increasing atomic number
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Mendeleev organized his periodic table in order of increasing atomic number in 1869.

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The charge on the most stable ion of zinc​
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Zinc (Zn) always has a +2 charge. It is one of the exceptions.
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A student is doing an experiment to determine the effects of temperature on an object. He writes down that the initial temperatu
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Answer:

1) The Kelvin temperature cannot be negative

2) The Kelvin degree is written as K, not ºK

Explanation:

The temperature of an object can be written using different temperature scales.

The two most important scales are:

- Celsius scale: the Celsius degree is indicated with ºC. It is based on the freezing point of water (placed at 0ºC) and the boiling point of water (100ºC).

- Kelvin scale: the Kelvin is indicated with K. it is based on the concept of "absolute zero" temperature, which is the temperature at which matter stops moving, and it is placed at zero Kelvin (0 K), so this scale cannot have negative temperatures, since 0 K is the lowest possible temperature.

The expression to convert from Celsius degrees to Kelvin is:

T(K)=T(^{\circ}C)+273.15

Therefore  in this problem, since the student reported a temperature of -3.5 ºK, the errors done are:

1) The Kelvin temperature cannot be negative

2) The Kelvin degree is written as K, not ºK

6 0
4 years ago
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