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marshall27 [118]
3 years ago
14

Steel is the most commonly used metallic material. However, its annual loss due to corrosion is huge. Preventing metal corrosion

is a big issue in scientific research. The wrong description about metal corrosion below is
A. Steel corrodes more easily in
humid air than in dry air
B. Steel corrosion in reality is the
chemical change that takes place
when steel reacts with the
oxygen and water vapour in air.
C. Aluminium is more active than
the iron in steel. Therefore its
ability to resist corrosion is
weaker than steel.
D. Painting on the surface of steel
can prevent corrosion of the
steel.​
Chemistry
2 answers:
Fiesta28 [93]3 years ago
5 0

Answer:

d

Explanation:

elvis's do fhgffgcgxcycy

Stels [109]3 years ago
3 0
B
Jdjfjfbfbfhhrjrbfbvfudhvr
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Heating curve shows temperature verses energy gain. Which parts of the curve represent a gain in potential energy?
Brilliant_brown [7]

Answer:

Those two horizontal lines.

Explanation:

Hello there!

In this case, when focusing on these heating curves, it is important to say they tend to have two constant-temperature sections and three variable-temperature sections. Thus, from lower to higher temperature, the first constant-temperature section corresponds to melting and the second one vaporization, whereas the three variable-temperature sections correspond to the heating of the solid until melting, the liquid until vaporization and the gas until the critical point.

In such a way, we infer that the boxes referred to constant temperature are referred to a gain in potential energy, that is, the two horizontal lines.

Regards!

6 0
3 years ago
On molecular level what I causing the glaciers to melt
MakcuM [25]
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</span>That is because hydrogen bonds between water molecules in glaciers is decreased under increasing concentrations of carbon dioxide who <span>competes with the water molecules connected in the ice crystal.</span>
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3 years ago
Which describes the amplitude of a wave when it carries more energy?
MrMuchimi

Answer:

It is higher.

Explanation:

The amplitude of a wave that carries more energy is usually higher.

The energy carried by a wave is related to the amplitude in such a manner that it is proportional to the square amplitude.

Amplitude is the maximum vertical displacement of a wave moving along its path.

  • Energy of wave and its amplitude are directly proportional to one another.
  • If the energy of wave is doubled, the amplitude is quadrupled.
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7 0
3 years ago
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Which is the most active nonmetallic element in group 16?
timama [110]
Oxygen

For metals, reactivity increases as we move through the elements in the period table from top to bottom, and left to right. In contrast, for nonmetals, reactivity increases as we move through the elements in the periodic table, as we move from bottom to the top, and right to left. 

Group 16 on the periodic table is also called the oxygen family or chalcogens. It includes the following elements from top to bottom: Oxygen, Sulfur, Selenium, Tellurium, and Polonium. Of these, only Oxygen, Sulfur, and Selenium are nonmetals. Since reactivity of nonmetals increases going up the periodic table, oxygen is therefore the most reactive nonmetal in the group. Shown in the figure below is the reactivity trend in the periodic table.

5 0
3 years ago
Complete combustion of 6.4g of compound K produced 8.8 g of carbon dioxide and 7.2 g of water. Calculate the empirical formula o
Elenna [48]
Lh (x1)78.009+1= 0.0000567
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3 years ago
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