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3 years ago

Which of the following statements about atoms is NOT true?

Chemistry

1 answer:

Alika [10]3 years ago

6 0

Answer:

atoms are too small to be seen under a microscope

Explanation:

scientists have been always making research on atomic structure which cannot be directly looked through a microscope

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What is the most corrosive element in the periodic table?

Fittoniya [83]

Answer:

Fluorine is the most corrosive element in the periodic table.

Explanation:

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3 years ago

Read 2 more answers

Adi loves the smell of lavender, so she decides to press a few petals of the flower until they release a few drops of oil. She w

soldier1979 [14.2K]

Answer:

See Explanation

Explanation:

What Adi failed to realize is that the oily substance that was obtained from lavender consists of a mixture of substances. It is not only the required fragrance that is present in the extract.

This experiment will not work because those other components in the mixture may be erroneously identified when they show up in the mass spectrum of the extract and may be mistaken for the fragrance in question.

Hence the experiment will not work because; if some kind of separation method is not used to identify other impurities in the oil, many other substances may be mistaken for the actual fragrance.

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3 years ago

What does 2Cl mean?

Nina [5.8K]

Answer: I think that you have to find it in your lesson

Explanation:

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2 years ago

How many significant digits are in the number 699.06133000?

Nataly [62]

There are 7 signifigant figures in this number!

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3 years ago

The reactants of two chemical equations are listed. Equation 1: PbNO3 + Mg Equation 2: PbNO3 + KI Based on the type of reaction,

Vika [28.1K]

Answer:

Equation 2, because K being more reactive, exchanges position with Pb in PbNO3.

Explanation:

Hello there!

In this case, according to the given reactions, it is possible to realize that according to the reactivity series, since K is is group 1A of alkali metals, we infer it is by far more reactive than magnesium, for that reason last two choices can be easily discarded. Now, considering equation 2, it would be necessary to complete it to figure out the correct option:

$Pb(NO_3)_2 + KI \rightarrow PbI_2+KNO_3$

Whereas it can be seen that potassium exchanges position with Pb according to the double displacement reaction; therefore, the correct answer is "Equation 2, because K being more reactive, exchanges position with Pb in PbNO3".

Best regards!

8 0

3 years ago