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Law Incorporation [45]
3 years ago
7

What are the properties of helium

Chemistry
1 answer:
AleksandrR [38]3 years ago
7 0
Helium is a colorless odorless gas, has the lowest melting point of any element, and it's boiling point is close to absolute zero
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Help quickkkk plssssssss
earnstyle [38]

Answer:

I think B or D

Explanation:

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4 0
3 years ago
Read 2 more answers
Which of the following is not a possible termination step in the free radical chlorination of methane? Group of answer choices ∙
vagabundo [1.1K]

Answer: first option is not a termination

∙CH3 + Cl2 → CH3Cl + Cl∙

Explanation:

Since a radical is formed as part of the product it means it's a propagation step and not a termination step, at termination no free radical exist as product

7 0
4 years ago
What is the total number of moles of solute in 250 milliliters of a 1.0 M solution of NaCl? 1. 1.0 mole 2. 0.25 mole 3. 0.50 mol
Anastasy [175]

Hope this helps you with your answer.

NaCl --> Na+ + Cl-

c= n/V

n= c*V= 1.0 mol dm^-3 * 0,250 dm^3= 0,25 mol (mol dm^-3= M; mL= cm^3)

but you need to multiply that with 2 be cause you have 0,25 moles of Na+ and 0,25 moles of Cl- so the answer is 3) 0,50 moles

;)

ps you need to take into account both species be cause from 1 mole of NaCl you get 1 mole of Cl- and one mole of Na+ and when you add that up you get 2 moles

8 0
3 years ago
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What does the term inert refer to?
In-s [12.5K]

Answer:

Definition of Inert. An inert chemical is one that is stable and unreactive under specified conditions. ... However, most of the noble gases have now been observed to form compounds, although generally under unusual conditions. Helium and neon are highly inert; they form no compounds.

8 0
4 years ago
Which of these steps would most likely be part of a lab procedure ?
avanturin [10]

First, Identify a problem or need.

Second, Design a solution.

Third, Implement the solution.

Last, Evaluate the solution.

8 0
3 years ago
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