A double bond consists of one sigma bond and one pi bond.
Therefore Option C is the correct answer.
<h3>What is a Double Bond ?</h3>
A bond in which 4 electrons are shared between a [pair of atoms is called a double bond , higher amount of energy is required to break a double bond.
A double bond consists of one sigma bond and one pi bond.
Therefore Option C is the correct answer.
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Answer is: molar mass of sodium iodide is 149.89424 g/mol.
Chemical reaction: Na⁺ + I⁻ → NaI.
The molar mass (M)<span> is the </span>mass<span> of a given substance (in this example sodium iodide</span><span>) divided by the </span>amount of substance<span>.
</span>M(NaI) = Ar(Na) + Ar(I) · g/mol.
M(NaI) = 22.98977 + 126.90447 · g/mol.
M(NaI) = 149.89424 g/mol.
Answer:
C. United States, Russia, and China
Explanation:
Only three nations (Russia, U.S., China) have launched their own crewed spacecraft, with the Soviets/Russians and the American programs providing rides to other nations' astronauts. Twenty-seven "first flights" occurred on Soviet or Russian flights while the United States carried fourteen.
