Helium can be liquefied when he atoms are attracted to one another by intermolecular ________ forces.

1 answer:

3 0

Helium can be liquefy through a very low temperature because of the weakness of attractions between the helium atoms. In addition, helium is a noble gas that has a very weak interatomic London dispersion forces. Thus, this element would remain liquid at atmospheric pressure all the way to its liquefaction point going to absolute zero.

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Use the periodic table to match each of the following element symbols to its name, atomic mass, or atomic number

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Answer:

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An element in group 7 on the periodic table most likely has which physical property?

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Answer:

They are most likely solid

Explanation:

solid is a physical property

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Convert 23.064 mass to mg

Ierofanga [76]

ANSWER: 23064 mg

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23.064 g x 1000 = 23064 mg

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When you have finished adding the necessary amount of NaOH to your beaker, what color will the litmus paper turn?

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Answer: The red litmus paper turns blue on dipping in NaOH solution.

Explanation:

Litmus paper is the indicator that detects the nature of the solution, whether it is acidic or basic.

There are 2 types of litmus paper:

Red litmus paper: This paper will turn blue if it is dipped in basic solution and will remain as such if it is dipped in acidic solution.
Blue litmus paper: This paper will turn red if it is dipped in acidic solution and will remain as such if it is dipped in basic solution.

NaOH is a strong base, so when a red litmus paper is dipped in the beaker having necessary amount of NaOH, the red litmus paper turns into blue.

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