Which formulas represent compounds that are isomers of each other?H HH-C-H and H C-HH H2 HO-C-H and H C-OHH HH-C-C-C OH and H-C O-C-C-HH HH H HOH HH OH H4 H-C-C-C-H and H C C-HH H

Answer:

• Option B. Calcium chloride (CaCl₂)

Explanation:

The colligative properties depend on the concentration of particles  (molecules or ions) of solute dissolved and not on the identity of the solute.

For your reference the colligative properties are: i) boiling point increase, ii) freezing point depression, iii) vapor pressure lowering, and iv) osmotic pressure.

When the solute is a ionic compound the ionization yields several ions, so for ionic solutes you must predict first the number or ions formed per unit of compound and then predict the effect on the colligative properties: the greater the number of ions per unit of compound the greater the effect on colligative properties.

So, just set the ionization equations for each compound:

• MgSO₄ (aq) → Mg²⁺ (aq) + SO₄²⁻  (aq): 2 ions

• CaCl₂ (aq) → Ca²⁺  (aq) + 2Cl⁻ (aq) : 3 ions

• KI (aq) → K⁺ (aq) + I⁻ (aq): 2 ions

• C₆H₁₂O₆ is a molecular compound, not a ionic one, so it remains s 1 molecule.

Then, since calcium chloride, CaCl₂, produces the greater number of ions it is the solute that productes the greatest effect on colligative properties.

Answer:

D. Calcium chloride (CaCl2)

Explanation:

Founder's Education/ Educere Answer

The flames being emitted by the ions are as a result of ions 3. emitting  energy as they return to lower energy levels.

When ions are heated:

• They absorb energy
• They are able to move around

As they move around, they expend some of that energy and lose it as a result thereby returning to lower energy levels. As that energy is lost, it comes across as light being emitted by the ions.

In conclusion, ions in the flame test emit light as they lose energy and return to a lower energy level.

Find out more at brainly.com/question/6357832.

Answer;

-Emit energy as they return to lower energy levels.

Explanation;

-A characteristic color of light is emitted by these ions in the flame when the electrons emit energy as they return to lower energy levels.

-The metal ions do absorb energy, and the electrons are boosted to higher energy levels, but they emit that energy as they fall to lower levels, and it is the photons of light they are emitting that can be seen.

Answer : The amount left of leutium-176 will be, 2.10 g

Solution :

First we have to calculate the rate constant, we use the formula :

Now we have to calculate the amount left of the sample.

Expression for rate law for first order kinetics is given by :

where,

k = rate constant  =

t = decay time  =

a = initial amount of the sample = 16.8 g

a - x = amount left after decay process  = ?

Now put all the given values in above equation, we get

Therefore, the amount left of leutium-176 will be, 2.10 g

Answer:

A.

Explanation:

Answer:

Explanation:

In ions, protons are never taken or given. Only the number of electrons are changed

Br^1- gains 1 electron, so the number of electrons increases from 35 to 36. No protons are taken away, to the number of protons and the atomic number of Br1- is still 35, and the number of neutrons is still 45.