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3 years ago

PLEASE ANSWER FAST!!!

Chemistry

2 answers:

swat323 years ago

8 0

For the question 1. It is A started to cool down

vredina [299]3 years ago

7 0

2- Condense
3- ?
5- Waves
6- Star
I hope this helps! :)

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Typically ____

MArishka [77]

Answer:

Protons

Explanation:

Typically protons cannot be removed from the atom. Removing protons from an atom will completely change the atom as it will become another element entirely.

In an atom, protons are held by strong nuclear forces.

Within an atom, protons are the positively charged particles.
Together with the neutrons, they are found in the nucleus of an atom.
The number of protons within an atom is the atomic number of the atoms and it determines the nature and type of atom it is.
Protons cannot be removed from an atom due to the strong binding force holding them together in place.

4 0

3 years ago

Read 2 more answers

A 0.98 M solution of calcium chloride with a volume of 0.25 L is diluted to form a 0.74 M solution. What is the new volume of th

tankabanditka [31]

The new volume of the dilute solution is 0.33 L.

<u>Explanation:</u>

Using the law of Volumetric analysis, we can find the volume of the dilute solution from the stock solution or the concentrated solution of Calcium Chloride.

V1M1 = V2M2

V1 be the volume of the stock solution = 0.25 L

M1 being the molarity of the stock solution = 0.98 M

V2 be the volume of the dilute solution = ?

M2 being the molarity of the dilute solution = 0.74 M

We have to rearrange the above equation to find V2 as,

V2 = $$\frac{V1M1}{M2}$

Now plugin the values as,

V2 = $$\frac{0.25 L \times 0.98 M }{0.74 M}$

= 0.33 L

So the new volume of the dilute solution is 0.33 L.

3 0

3 years ago

What is not equal to o.536 kilometers

mafiozo [28]

53.6 hectometer
536 meters
536,00 centimeters

3 0

3 years ago

T-Butyl alcohol was produced by the liquid-phase hydration (using water, W) of isobutene (I) over an Amberlyst-15 catalyst.

Minchanka [31]

Answer:

True

Explanation:

This is because, The hydroboration oxidation of an alkene which is isobutene in the presence of a catalyst will result to alcohol as the product . Therefore, the OH group will attach or link itself to the carbon which is less obstructed. Thus this reaction is in accordance to Anti-Markownikoff's rule.

So isobutene on hydroboration oxidation will produce ter isobutyl alcohol.

8 0

3 years ago

HCl is added to a solution containing barium and calcium ions. If a precipitate is formed, what is it? A. No precipitate is form

lord [1]

Answer:

A. No precipitate is formed

Explanation:

Hello,

In this case, since the reactions are:

$Ca^{2+}(aq)+2HCl(aq)\rightarrow CaCl_2(aq)+2H^+(aq)\\\\Ba^{2+}(aq)+2HCl(aq)\rightarrow BaCl_2(aq)+2H^+(aq)$

We evidence no formation of insoluble salts or precipitates since both calcium and barium chlorides are largely soluble in water due to the ionic bond which binds them, thus A. No precipitate is formed.

Regards.

7 0

3 years ago