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Zielflug [23.3K]
3 years ago
14

PLEASE ANSWER ASAP:!!!!What characteristics of water make it essential for life and a useful chemical in the formation of soluti

ons?
Chemistry
1 answer:
Sliva [168]3 years ago
8 0
Special properties of water are its high heat capacity and heat of vaporization, its ability to dissolve polar molecules, its cohesive and adhesive properties, and its dissociation into ions that leads to generating pH. Understanding these characteristics of water helps to elucidate its importance in maintaining life.
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How many years have the earth
Ivenika [448]
We need more information to answer this.
6 0
3 years ago
Read 2 more answers
What volume of methanol should be used to make 1.25 L of a 21.0% by volume solution?<br> ___ mL
Pie

Answer:

  262.5 mL

Explanation:

21% of the 1.25 L volume is methanol, so the required amount of methanol is ...

  0.21 × 1250 mL = 262.5 mL

4 0
3 years ago
A reaction has ∆H = −356 kJ and ∆S = −36 J/K. Calculate ∆G (kJ) at 25°C.
Cloud [144]

Answer: -345.2 KJ

Explanation: As we know that ,dG=dH-TdS

T=25+273=298 K

dG= -356 x1000-298(-36)= -356000+10728

=-345272 j

= -345.2 KJ

5 0
3 years ago
Please help I’m timed !!!
Rashid [163]

Answer:

b. \% diss =4.4x10^{-2}\%

Explanation:

Hello there!

In this case, given the ionization reaction of HClO as weak acid:

HClO\rightleftharpoons H^++ClO^-

We can write the equilibrium expression as shown below:

Ka=3.5x10^{-8}=\frac{[H^+][ClO^-]}{[HClO]}

In such a way, via the definition of x as the reaction extent, we can write:

3.5x10^{-8}=\frac{x^2}{[HClO]}

As long as Ka<<<<1 so that the x on the bottom can be neglected. Thus, we solve for x as shown below:

x=\sqrt{3.5x10^{-8}*0.18} =\\\\x=7.94x10^{-5}M

And finally the percent dissociation:

\% diss=\frac{x}{[HClO]} *100\%\\\\\% diss=\frac{7.94x10^{-5}M}{0.18}*100\% \\\\\% diss =0.044\%=4.4x10^{-2}\%

Which is choice b.

Best regards!

6 0
3 years ago
Select all the statements that are true about electron configurations:
frosja888 [35]

Answer:

b

Explanation:

because i guessed on this cuz i dont know the answer

3 0
3 years ago
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