What is the mass of 12.3 moles of helium (He)?

Answers

Answer 1
Answer:

Answer : The mass of 12.3 moles of helium (He) is, 49.2 grams.

Solution : Given,

Moles of helium = 12.3 moles

Molar mass of helium = 4 g/mole

Formula used :

\text{Mass of helium}=\text{Moles of helium}* \text{Molar mass of helium}

\text{Mass of helium}=(12.3mole)* (4g/mole)=49.2g

Therefore, the mass of 12.3 moles of helium (He) is, 49.2 grams.

Answer 2
Answer:

Answer:

C. 49.2 g He

Explanation:

I got it right


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How might radar images help to reduce damage from an approaching storm?

Answers

They let the meteorologist know how bad the storm is

Which substance is use to increase the rate of catalyst?​

Answers

Answer:

A catalyst is a substance that can be added to a reaction to increase the reaction rate without getting consumed in the process. ... Enzymes are proteins that act as catalysts in biochemical reactions. Common types of catalysts include enzymes, acid-base catalysts, and heterogeneous (or surface) catalysts.

Brainliest 25 pts Upper portions of the Grand Canyon show undisturbed horizontal layers of sedimentary rock.
Which of Steno's principles helps explain this?

A.principle of lateral continuity

B.principle of superposition

C. principle of original verticality

D.principle of original horizontality

Answers

Answer:

The Answer is D. principle of original horizontally

The rapid movement of gases molecules can be explained because gases have ___ size particles and exert _____ attraction for other gas particles.

Answers

Answer:

The correct answer is D. small, little

Explanation:

The rapid movement of gases molecules can be explained because gases have smallsize particles and exert littleattraction for other gas particles.

hope this helps :)

1. small size particles

2.exert little attraction

What is the next smallest classification group after order

Answers

The answer would be Familes... I hop this is what you wanted. 

Final answer:

In biological taxonomy, the next smallest classification group after Order is Family. This is part of the classification system that ranges from broad categories to more specific ones, which include Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species.

Explanation:

In the biological classification system, the next smallest group after Order is Family. This refers to the hierarchy of taxonomic ranks in biology, where organisms are classified from broad categories to more specific ones. The sequence of ranks from broad to specific is: Domain, Kingdom, Phylum, Class, Order, Family, Genus, and Species. Each rank gets more specific as you go down the list. So, if you're looking at the rank just beneath Order, it would be Family. For instance, in the Order Carnivora (carnivores) one of the Families is Felidae (cats).

Learn more about Biological Classification here:

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What is the color would phenolphthalein be if placed in water

Answers

It's would turn pink in a basic solution suck as water.