4 years ago

If a star is small, it will remain in the main sequence _____ a large star.

Chemistry

2 answers:

Dimas [21]4 years ago

8 0

The correct answer should be "longer than".

zhannawk [14.2K]4 years ago

8 0

Longer than a smaller star

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One hypothesis regarding earth's early atmosphere, includes this carbon-based gas along with ammonia, free hydrogen, and carbon

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Find the zeros of the quadratic equation f(x)= 6x²-3, and verify the relation between its zeros and coefficients.

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Answer:

f(x) = 6x²-3

f(x) = 0

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3 years ago

2NO + 3MnO2 + 4H â 2NO3- + 3Mn2 + 2H2O For the above redox reaction, assign oxidation numbers and use them to identify the eleme

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Hello there!

In this case, according to the given redox reaction, we rewrite it as a convenient first step:

$2NO + 3MnO_2 + 4H^+ \rightarrow 2NO_3^- + 3Mn^{2+} + 2H_2O$

Next, we assign the oxidation numbers as follows:

$2N^{2+}O^{2-} + 3Mn^{4+}O^{-2}_2 + 4H^+ \rightarrow 2(N^{5+}O^{2-}_3)^- + 3Mn^{2+} + 2H^+_2O^{2-}$

Thus, we can see that both manganese and nitrogen undergo a change in their oxidation number, the former decreases from 4+ to 2+ (reduced and oxidizing agent) and the latter increases from 2+ to 5+ (oxidized and reducing agent).

Regards!

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3 years ago