Nitrogen, for example, is a gas that liquefies at about −200° C and freezes around −210° C, whereas bismuth is a solid melting at 271° C and boiling at about 1,560° C.
Answer:
Balance chemical equation is
O2(g) + 2H2(g) --> 2H20(g)
a. 0.20 mol 02 --> 0.225mol H20
b. 0.30 mol H2 --> 2.7mol H20
Answer:
c = 325.0 m/s.
Explanation:
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In this case, since the frequency, velocity and wavelength are related via:

Whereas c is the velocity, lambda the wavelength and f the frequency. Thus, we plug in the given data to obtain:

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