An atom of carbon has 4 electrons in its outermost shell, which means that
<span>its ionic charge is 4+ or 4-
</span>Si is in same group as carbon so its also 4+ or 4-
Germanium is 4+.
Sn is also 2+ or 4+
Pb is usually +2
Answer:
one reason is, Water is a very good liquid for cooling things down, for one thing there is plenty of it and it has also got a high specific heat capacity. This means that it can absorb a large amount of heat energy without getting too hot.
will not heat up or cool down very fast
Water has a high value of latent heat of vapourization so it has cooling properties.
hope this helps you. :)
Explanation:
C. quartz and amethyst
Explanation:
Quartz and amethyst can be told apart by their color without performing a streak test on them.
This is because from the given choices, their color is different.
quartz is a colorless
amethyst is purple
- Quartz is silicate mineral purely made of silicon and oxygen.
- Amethyst is a variety of quartz but containing some mineral inclusions that makes its color different.
- Preforming the streak test gives their color to be white.
- This cannot be useful in identifying the minerals they contain.
- Since their natural colors are distinct, it is a more diagnostics tool .
learn more:
Silicate minerals brainly.com/question/4772323
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The force of gravity is the force with which massively large objects such as the earth attracts another object towards itself. All objects of the earth exert a gravity that is directed towards the center of the earth. Therefore, the force of gravity of the earth is equal to the mass of the object times acceleration due to gravity.
<span>F = ma </span>
<span>4.9N = m (9.8 m/s^2), note that N (newtons) = kg-m/s^2 </span>
m = 0.5 kg
<span>The mass of the object is 0.5kg.</span>
