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diamong [38]
3 years ago
8

Which action is a change in state?​

Chemistry
2 answers:
Alex787 [66]3 years ago
8 0

Answer: condensing is the correct answer

Explanation:

gogolik [260]3 years ago
5 0

Dissolving is your answer to this question. Becuase when something dissolves it is no longer in the same shape or state cause if something dissovles then goes away into another state.

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Draw structures from the following names, and determine which compounds are optically active:(b) 3-chloro-2,2,5-trimethylhexane
inn [45]

The given compound 3-chloro-2,2,5-trimethylhexane is an optically active compound .

Because this compound does not have plane of symmetry (POS) and center  of symmetry (COS) i.e. does not have di-symmetry . And also forms non superimposable mirror image . the compound is optically active .

It has  chiral center.

Here the chiral carbon has 4 distinct groups such as : chlorine , hydrogen , 2-methylpropyl , tertbutyl .

<h3>What is di-symmetry?</h3>

Di-symmetry is that which have no center of symmetry and plane of symmetry and alternate axis of symmetry .

<h3>Chiral center :</h3>

Have Sp3 hybridized center (4sigma bond ) .

4 distinct group  is attached to the chiral atom. form non -superimposable mirror image .

<h3>What is optical isomerism ?</h3>

Same molecular formula and same structural formula . also have same physical and chemical properties .

They differ in their behavior towards plane polarized light (ppl) .

Learn more about chiral center here:

brainly.com/question/9522537

#SPJ4

7 0
2 years ago
Write the name of the metric system prefix associated with each mathematical factor. Do not use any hyphens in your answers and
MrRissso [65]

Answer:

1. micro

2. centi

3. milli

4. kilo

Explanation:

Prefixes, in mathematical exponents, are defined as the alphabetical names associated with the mathematical factors. Some examples are as follows:

10⁶ = Mega

10⁹ = Giga

10⁻⁹ = Nano

10⁻¹² = Pico

So, in order to name the metric system prefixes associated with each of the given mathematical factor, we first convert the factor into exponent form and then write its prefix, as follows:

10⁻⁶ = <u>micro</u>

1/100 = 0.01 = 1 x 10⁻² = <u>centi</u>

0.001 = 1 x 10⁻³ = milli

1000 = 1 x 10³ = <u>kilo</u>

8 0
3 years ago
Iron in rock combining with oxygen to form hematite
blondinia [14]
The answer is a. Chemical change.
4 0
3 years ago
If carbon has 8 electrons is it a cation or anion?
dem82 [27]

Answer:

carbon is a -4 anion

Explanation:

It needs 4 electrons from other molecule(s)/element(s) to be stable.

7 0
4 years ago
Read 2 more answers
Can someone please look at this?
Alex Ar [27]

Answer:

\large \boxed{\text{110 mmHg}}}

Explanation:

We can use Dalton's Law of Partial Pressures:

Each gas in a mixture of gases exerts its pressure separately from the other gases.

In other words, if a gas makes up 3.0 % of the atmosphere, its partial pressure is 3.0 % of the total pressure.

p_{\text{N}_{2}} = p_{\text{tot}} \times \dfrac{\text{3.0 parts N}_{2}}{\text{100 parts atmosphere}}= \text{3700 mmHg} \times \dfrac{\text{3.0 mmHg}}{\text{100 mmHg}} = \textbf{110 mmHg}\\\\p_{\text{N}_{2}} = \large \boxed{\textbf{110 mmHg}}

4 0
3 years ago
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