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aksik [14]
3 years ago
14

The coastal region upon which the waves in the following image are breaking most likely has

Chemistry
2 answers:
oksian1 [2.3K]3 years ago
7 0
That is a steep slope for sure, no doubt about it. Hope this helps!
solniwko [45]3 years ago
3 0

Answer:

c. a steep slope

Explanation:

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8. When a 2.5 mol of sugar (C12H22O11) are added to a certain amount of water the boiling point is raised by 1 Celsius degree. I
Tamiku [17]

Answer:

The boiling point of the water by adding 2.5 moles of aluminium nitrate will be changed by 4° C.

Explanation:

<u>Step 1:</u> define the formula for an elevation of the boiling point

<u><em>Δ T b  = i *K b *bB</em></u>

⇒with Δ T b = the elevation of the boiling point ( in °C or Kelvin)

⇒with i = van't Hoff  i -factor for the solute. The factor i shows the number of individual particles (typically ions) that are formed by a compound in the solution.

⇒ with Kb = ebullioscopic constant, which depends on the properties of the solvent. (Eventually can be calculated).

⇒ with bB= the molal concentration (molality) of the solute.

Since we have 2 different solutions ( component 1 = sugar and component 2 = aluminium nitrate) of the same molality in the same solvent ( water). We can express this as followed:

Δ T b,2 / Δ T b,1  = (i2 * Kb * bB ) / (i1 * Kb *bB)

⇒after he was simplifying this becomes:

Δ T b,2 / Δ T b,1  = i2 / i1

⇒ Now we can isolate either Δ T b,2 or Δ T b,1:

Δ T b,2  =(i2/i1) x Δ T b,1

<u>Sugar</u>

⇒ is a covalent compound, so it doesn't dissociate in water ⇔ i1=1

<u>Aluminium nitrate</u>

⇒ it's a soluble ionic compound and in solution it will dissociate as the following equation:

Al(NO3)3 (aq) → Al3+(aq)  + 3NO3- (aq)

⇒thus here are 4 particels formed : <u>1</u> Al3+ + <u>3</u>NO3-

i2=4

As given, we also know that the temperature was raised by 1°C after adding sugar ⇒ Δ T b,1 = 1°C

<u>Step 2</u>: insert all the numbers in the formula for boiling point elevation

(i2/i1) x Δ T b,1

(4/1 ) x 1°C = 4°C

⇒ The boiling point of the water by adding 2.5 moles of aluminium nitrate will be changed by 4°C

6 0
3 years ago
Which describes the number of protons in the atom of a particular element
igomit [66]

Answer:

Atomic Number

Explanation:

The number of protons an atom has is unique to that element. The number of protons is noted as the atomic number for that element on the periodic table.

4 0
3 years ago
How can you determine if covalent bonding will occur?
Crank
If two nonmetals are bonded together. So look at your periodic table of elements and decide if the two elements that are being bonded are nonmetals or not.
5 0
3 years ago
Among the factors that affect the solubility of a substance are type of solvent and temperature.
nlexa [21]
Yes there is by the way are there any answers to choose from 
7 0
3 years ago
Hey can you help me I'm on that question now
allsm [11]
Copper foam and ceramic would answer you question down below<span />
6 0
3 years ago
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