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3 years ago

Meaning of dot in a hydrate formula

Chemistry

2 answers:

Rina8888 [55]3 years ago

5 0

Answer:

By writing AB⋅xCD chemists mean that there are CDs are found in the crystalline framework of AB. The most common example of this is water trapped inside the crystal structure of ionic compounds.

An example that's often taught is CuSO4⋅5H2O. See that 5 that's a representative of x? It means that water can be bound only with intermolecular interactions, but it exists in the structure in a stoichiometric ratio.

topjm [15]3 years ago

3 0

Answer:

bonds with water molecules

Explanation:

The formula of the hydrated form is CuSO 4. 5H 2 O. The dot after the formula for copper sulphate indicates bonds with water molecules. Research suggests that the nature of these bonds is not as simple as was once thought.

Hope it helps :)

pls mark brainliest :P

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Help with questions

gulaghasi [49]

1) This type of energy transfer is called conduction.

2) Hydroelectricity

3) petroleum naphtha, gasoline, diesel fuel, asphalt base, heating oil, kerosene, liquefied petroleum gas, jet fuel and fuel oils. All of these come out of oil refining process

Hope this helped and plz mark as brainliest!

8 0

4 years ago

Oxycodone (C18H21NO4), a narcotic analgesic, is a weak base with pKb = 5.47. Calculate the pH of a .00500 M oxycodone solution.

Ganezh [65]

Answer:

pH = 10.11

Explanation:

Hello there!

In this case, since it is possible to realize that this base is able to acquire one hydrogen atom from the water:

$C_{18}H_{21}NO_4+H_2O\rightleftharpoons C_{18}H_{21}NO_4H^+OH^-$

We can therefore set up the corresponding equilibrium expression:

$Kb=\frac{[C_{18}H_{21}NO_4H^+][OH^-]}{[C_{18}H_{21}NO_4]}$

Which can be written in terms of the reaction extent, $x$ :

$Kb=\frac{x^2}{0.00500M-x}=3.39x10^{-6}$

Thus, by solving for $x$ we obtain:

$x_1=-0.000132M\\\\x_2=0.0001285M$

However, since negative solutions are now allowed, we infer the correct $x$ is 0.0001285 M; thus, the pOH can be computed:

$pOH=-log(x)=-log(0.0001285)=3.89$

And finally the pH:

$pH=14-pOH=14-3.89\\\\pH=10.11$

Best regards!

5 0

3 years ago

Compare urban and rural land .how are each used?

Ksivusya [100]

Answer:

"Urban area is used for the buildings, industries etc, whereas the rural areas are used for cultivation, forest cover etc."

Explanation:

When we talk about the urban land they are mostly covered with buildings, industries, roads and apartments and also the municipal structures. But when we talk about the rural land it has less dense population with forest cover, agricultural lands, rangeland and also different land cover type. In the urban areas the population density is very high. Those areas that located in the outskirt of the town are the rural areas.

5 0

3 years ago

BRAINLIEST ANSWER! What is the best description of the side of the moon that faces Earth? A. goes through cycles B. the same C.

spayn [35]

The answer for the question is A

4 0

4 years ago

Read 2 more answers

If 125mL of a 0.15M NaOH solution is diluted to 150mL, what will the new molarity of the solution be?

stiks02 [169]

Answer:

C NaOHsln = 0.125 M

Explanation:

Molarity (M) [=] mol/L

∴ moles NaOH = (0.125 L)(0.15 mol/L) = 0.01875 mol

∴ Vsln = 150 mL = 0.150 L

New Molarity:

⇒ C NaOH = 0.01875 mol/0.150 L

⇒ C NaOH = 0.125 M

6 0

3 years ago