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GenaCL600 [577]
2 years ago
10

PLEASE HELP ASAP IT'S TIMEDDDDD​

Chemistry
1 answer:
AfilCa [17]2 years ago
5 0
I’m pretty sure that the answer is B! Hope this helps! :3c
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The percent yield of a chemical reaction is
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the measured amount of product that is made from a given amount of reactant

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statement 1,mass is conserved durning the reaction. statement 2 sum of mass and energy is conserved durning the reaction. which
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None of the statement is true for both chemical and nuclear reactions. In chemical reactions, mass is always conserved and the type of atoms are also conserved.

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Manganese(III) oxide is a transition metal compound. The oxidation state of manganese in this compound is _______ , and the chem
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Hello my Friend! The answer is: Manganese(III) oxide is a transition metal compound. The oxidation state of manganese in this compound is +3 , and the chemical formula of the compound is Mn2O3.

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Manganese can have two oxidation states: +2 and +3, but in this case, the "(III)"  indicates that in this compound, the state of oxidation is +3.

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This problem requires our calculation to undergo the dimensional analysis approach. In this approach, you disregard the actual quantity and focus on the units of measurement. This helps us know the units of our final answer. 

First, let's ignore 16. Let's focus on converting the units kPa-mm³/s to mJ/s. The unit kPa stands for kiloPascals which is 1000 times greater than 1 Pa. The unit mJ, on the other hand, stands for millijoules, which is 1000 times lesser than Joules. The relationship between the two is that, Joules = Pa × m³. But since we want our final answer to be mJ, that would be equal to Pa×mm³. Since the original unit already contains mm³, all we have to do is convert kPa to Pa. 

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Since Pa-mm³ is equal to mJ, the final conversion yields to 16,000 Pa-mm³/s.
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How many electrons must calcium lose to satisfy the octet rule?
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Lose 2 electrons

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