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2 years ago

14

Another one please help

1 answer:

ladessa [460]2 years ago

4 0

Possibly C or D i wanna say sorry if i’m wrong

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Cdvshduejsnxhhwjxhxh ydujdbxg

fiasKO [112]

Answer:

This is not a question

Explanation:

5 0

3 years ago

Read 2 more answers

Silicon has a relatively large latent heat of vaporization of 12800 J/g. This indicates that silicon has:

beks73 [17]

I believe it means that it takes a lot of heat in joules to make silicon vaporize so it stays solid until a great deal of heat has been added. By comparison, water has a latent heat of about 2260 joules per gram so vaporizes much more readily than silicon.

3 0

3 years ago

Which has the greater concentration of hydrogen ions, a substance with a pH of 5 or a substance with a pH of 4?

evablogger [386]

Answer:

pH 4

Explanation:

Firstly, we define pH as the negative logarithm to base 10 of the concentration of hydrogen ions.

Mathematically, we express this as:

pH = -log[H+]

Now let’s us calculate the concentration of hydrogen in each of the pH

For pH 4, we have:

4 = -log[H+]

[H+] = -Antilog(4)

[H+] = 0.0001M

For pH 5,

[H+] = -Antilog(5)

[H+] = 0.00001M

We can see that 0.0001 is greater than 0.00001 and thus it has a greater concentration of hydrogen ions

4 0

3 years ago

Will mark brainliest, please help ASAP!

Anon25 [30]

V²+ = (B)

X³+ = (D)

Y³- = (C)

Z²- = (A)

When an element loses electrons, the element gains a positive charge

When an element gains electrons, the element gains a negative charge

NOTE: Electrons are negative charges

7 0

3 years ago

If the fugacity coefficient of the components of a binary mixture are = 0.784, and =0.638 and mole fraction of component 1 is 0.

Reika [66]

Answer : The expression for the fugacity coefficient $\ln \phi$ , for the mixture is, -0.3669.

Explanation : Given,

Fugacity coefficient of component 1 = 0.784

Fugacity coefficient of component 2 = 0.638

Mole fraction of component 1 = 0.4

First we have to calculate the mole fraction of component 2.

As we know that,

$\text{Mole fraction of component 1}+\text{Mole fraction of component 2}=1$

$\text{Mole fraction of component 2}=1-0.4=0.6$

Now we have to calculate the expression for the fugacity coefficient $\ln \phi$ .

Expression used :

$\ln \phi=X_1\ln \phi_1+X_2\ln \phi_2$

where,

$\phi$ = fugacity coefficient

$\phi_1$ = fugacity coefficient of component 1

$\phi_2$ = fugacity coefficient of component 2

$X_1$ = mole fraction of of component 1

$X_2$ = mole fraction of of component 2

Now put all the give values in the above expression, we get:

$\ln \phi=0.4\times \ln(0.784)+0.6\times \ln(0.638)$

$\ln \phi=-0.3669$

Therefore, the expression for the fugacity coefficient $\ln \phi$ , for the mixture is, -0.3669.

7 0

3 years ago