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Sauron [17]
3 years ago
14

Help, also brainly dont be mean and delete this.

Chemistry
1 answer:
n200080 [17]3 years ago
8 0

Answer:

I dont understand what is the question you need help on-

Explanation:

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How many covalent bonds are predicted for each atom: (a) F; (b) Si; (c) Br; (d) O; (e) P; (f) S?
evablogger [386]
The <span>covalent bonds are predicted for each atom are :

</span>(a)F = 1
(b) Si = 4
(c) Br = 1
(d) O = 2
(e) P = 3
(f) S = 2
4 0
3 years ago
Read 2 more answers
What is the formula of the ionic compound composed of element X^2+ and element Y^-3?​
mihalych1998 [28]

Answer: X3Y2

Explanation:

The formula is

X has a valency of 2

Y has a valency of 3

So, we interchange the valencies

Therefore, the formula is

X3Y2

3 0
3 years ago
Which one would be expected to happen? If one of the buffers that contribute to pH stability in human blood is carbonic acid (H2
vredina [299]

Answer:

The correct answer is option C.

Explanation:

H_2CO3+H_2O\rightleftharpoons HCO_3^{-} + H_3O^+

On increasing the pH of the blood the hydronium ions concentration will decrease which will result in decrease in concentration of hydronium ions at the equilibrium state of hydrogen carbonate.

Le-Chatelier's principle:

This principle states that if there is any change in the variables of the reaction, the equilibrium will shift in the direction to minimize the effect.

According to Le-Chatelier's principle , on decrease in a concentration of the product the equilibrium moves in forward correction to re-establish itself.

So, on increasing the pH, the hydronium ions concentration will decrease which results in disassociation of more hydrogen carbonate to maintain the pH of the blood.

Hence, the correct answer is option C.

5 0
3 years ago
A block has a mass of 20g and measures 2cm*4cm*2cm, will it sink or float?
stich3 [128]
It will float, because it is almost weighs like a pen.
5 0
3 years ago
HELP ME!!! ASAP!!! I'LL MARK BRAINLLEST!!!!
dimulka [17.4K]

Answer:

<h3>it is important to carefully examine chemical reactions because there are many ways substances can be <em><u>reacting</u></em> without a chemical reaction taking place.</h3>

8 0
3 years ago
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