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3 years ago

14

Can we use nuclear fusion on Earth? Why or why not?

2 answers:

Monica [59]3 years ago

4 0

Answer:

Explanation:

No

Lisa [10]3 years ago

4 0

Yes we can use nuclear fusion on earth. The fusion doesn’t give out harmful toxins like carbon dioxide or other greenhouse gases into the atmosphere that we be through and there’s no long-lived radioactive waste in it. Nuclear fusion reactor’s produce no high activity long lift nuclear waste.

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Which of the following statements is true a A) dams are made of molecules B) Adams can join to form molecules C) atoms contain m

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3 years ago

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3 years ago

The wavelength of a light wave can be used to measure which of the following

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Silicon carbide (SiC) is an important ceramic material made by reacting sand (silicon dioxide, SiO2) with powdered carbon at a h

makkiz [27]

Answer:

Percent yield of SiC is 77.0%.

Explanation:

Balanced reaction: $SiO_{2}+3C\rightarrow SiC+2CO$

Molar mass of SiC = 40.11 g/mol

Molar mass of $SiO_{2}$ = 60.08 g/mol

So, 100.0 kg of $SiO_{2}$ = $\frac{100.0\times 10^{3}}{60.08}$ moles of $SiO_{2}$ = 1664 moles of $SiO_{2}$

According to balanced equation, 1 mol of $SiO_{2}$ produces 1 mol of SiC

Therefore, 1664 moles of $SiO_{2}$ produce 1664 moles of SiC

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Percent yield of SiC = [(actual yield of SiC)/(theoretical yield of SiC)] $\times 100$ %

= $\frac{51.4kg}{66.74kg}\times 100$ %

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4 0

3 years ago

An atom has two valence electrons, but four shells. This element is a member of which group or family?

Vesna [10]

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