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Dmitry [639]
3 years ago
6

When did Darwin publicly share his views of evolution?

Chemistry
1 answer:
Veronika [31]3 years ago
4 0

Answer:

It was not until he was 50 years old, in 1859.

Explanation:

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15. In the image given below, magnesium metal is coiled as a thin ribbon. What property of metal is exhibited by it? A Ductility
Sholpan [36]

Answer: The property of magnesium that is exhibited by it is DUCTILITY. The correct option is A.

Explanation:

Magnesium is a member of the alkaline earth metals. It occurs in nature, only in the combined state, as Epsom salt, dolomite and in many trioxosilicates( IV) including talc and asbestos. They have the following physical properties:

--> Appearance: they are silvery-white solids

--> Relative density: It has a relative density of 1.74

--> DUCTILITY: it's very ductile in nature

--> melting point: it has a melting point of 660°C.

--> Conductivity: They are good conductor of heat and electricity.

Furthermore, DUCTILITY is the physical property of a metal associated with the ability to be hammered thin or stretched into wire without breaking. A metal such as magnesium can therefore be coiled as a thin ribbon without fracturing due to its ductile physical properties.

8 0
3 years ago
Select the correct answer. In which state of matter do molecules have the lowest kinetic energy? A. liquid state B. plasma state
Svetllana [295]

Answer:

D. Solid state

Explanation:

In solid state the particles of  a substance, vibrate in fixed positions though they posses less kinetic energy. This is the reason as to why the particles do not move far apart from each other making the solids remain in fixed shapes unless an extra energy is added.

8 0
3 years ago
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What is the hardest mineral listed here? <br> A. quartz B. calcite C. gypsum D. corundum
a_sh-v [17]
The answer would be D. The only minerals harder than corundum is diamond.
3 0
3 years ago
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How many protons and electrons are present in an argon atom?
scoray [572]
Protons: 7Electrons:7
4 0
3 years ago
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A solution that contains a large amount of solute would be described as what
antiseptic1488 [7]

Answer:

A concentrated solution is one that has a relatively large amount of dissolved solute. A dilute solution is one that has a relatively small amount of dissolved solute.

8 0
3 years ago
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