3 years ago

Is graphite brittle???

1 answer:

5 0

Yes, it is. Graphite is brittle because of the carbon atoms that are attached in sheets instead of a 3-dimensional crystalline pattern.

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Which of the following is smaller than the atomic radius of beryllium? a. the ionic radius of beryllium b. the atomic radius of

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The best quality answer I would say that it is cC

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3 years ago

What is the mass of 1.56 X 10^24 formula units of Na2SO4?

Paladinen [302]

Answer:

$m=368 g$

Explanation:

Hello,

In this case, in order to compute the required mass, we first must notice that 6.022x10²³ formula units of sodium sulfate contain 1 mole of such compound (Avogadro's relationship). Moreover, one mole of sodium sulfate contains 142.04 g, which is in fact, the molar mass. Thereby, the required mass is computed via the following mole-mass-particles relationship:

$m=1.56x10^{24}f.u*\frac{1mol}{6.022x10^{23}f.u}*\frac{142.04g}{1mol} \\\\m=368 g$

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3 years ago

A process used to measure heat change in a system is called ______________________.

Nutka1998 [239]

Measuring heat flow!

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It is false, evaporation is when water vapor heats and goes from a liquid to a gas. The change of state from solid directly to gas is called sublimation

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3 years ago

If I add water to oil what will happen

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The oil, even a little drop, will spread out over the water surface and break up into many little blobs.

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