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romanna [79]
3 years ago
10

Hello guys sorry for spamming again but I have to do this whole thing and the end of trimester for my school is today so I need

to get good grades especially is science so here is the image please answer that. Thanks!!

Chemistry
1 answer:
Aloiza [94]3 years ago
4 0

Answer:

all you need if yo look up and say do plants grow without soil but yes they can grow without soil but they cannot grow without the necessities that soil provides.

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Find the pH of <br> 2.1 x 10-3 [HCI]
erik [133]

Answer: pH = 2.68

Explanation: pH = - log[H3O^+] .

 HCl reacts with water : HCl + H2O ->  Cl^- + H3O^+

So [H3O^+] = c(HCl) = 0.0021 M

pH = - log(0.0021) = 2.68

 

7 0
3 years ago
Identify the molecule with the highest boiling point. C 6H 6 NH 3 OF 2 CHCl 3
lakkis [162]

Answer:

Option NH 3 is the correct answer.

Explanation:

A molecule which has hydrogen bonding will have the highest boiling point. So, out of the given options only NH 3 will have hydrogen bonding.

Whereas in CHCI 3 there will be dipole-dipole interactions and no hydrogen bonding within the molecule.

In OF 2 and C 6H 6, there will be dipole-dipole interaction in both the molecules.

Thus, we can conclude that NH 3 will have the highest boiling point.

7 0
4 years ago
If NaOH is added to 0.010 M Al3+, which will be the predominant species at equilibrium: Al(OH)3 or Al(OH)- 4 ? The pH of the sol
fredd [130]

Answer:

Al(OH)- 4,

Explanation:

NaOH  added to 0.010 M Al3+

The predominant species at equilibrium will be = Al(OH)- 4,  and this because sodium hydroxide ( NaOH ) is a base will readily form a stable complex ion with aluminum ion like ( Al( OH ) - 4 . also the higher the Kf value the more stable the complex ion becomes and the more soluble  Al(OH)3 becomes

hence the predominant species at equilibrium is : Al(OH)- 4,

5 0
3 years ago
What element has 2 occupied principals of energy levels
DerKrebs [107]
Helium i believe is the answer
5 0
3 years ago
What is the significance of Einstein's famous equation E = mc 2 ?
statuscvo [17]
(D) Mass and energy can convert to one another.
3 0
3 years ago
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