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Virty [35]
4 years ago
13

What color does potassium burn

Chemistry
2 answers:
SIZIF [17.4K]4 years ago
7 0
Potassium burns a violet color
NeX [460]4 years ago
4 0

Answer:violet

Explanation:

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Which of the following is most likely to happen if the cell membrane does not function properly?
Nina [5.8K]

Answer:

1 and 2 are most likely to happen to the cell if cell membrane doesn't function properly

Explanation:

It is because if cell membrane doesn't function properly then cell will not be able to exchange materials in its surrounding.

8 0
3 years ago
Read 2 more answers
N and ca can mix with each othe to make compound-explain
postnew [5]

Answer:

Yes, the formed product is calcium nitride, Ca_3N_2.

Explanation:

Hello,

In this case, the answer is yes, since nitrogen in gaseous state is able to react with calcium in solid state to form calcium nitride as shown below:

N_2+Ca\rightarrow Ca_3N_2

This is possible since calcium losses two electrons and nitrogen gains three electrons to remain positively and negatively charged respectively, forming the aforementioned ionic compound.

Best regards.

7 0
3 years ago
You are given 10.00 mL of a solution of an unknown acid. The pH of this solution is exactly 2.36. You determine that the concent
Harlamova29_29 [7]

Answer:

4.27

Explanation:

Let's consider the dissociation of a generic monoprotic acid.

HA(aq) → H⁺(aq) + A⁻(aq)

The pH is 2.36. The concentration of H⁺ is:

pH = -log [H⁺]

[H⁺] = antilog -pH

[H⁺] = antilog -2.36 = 4.37 × 10⁻³ M

We know that the concentration of the acid Ca = 0.3535 M. We can find the acid dissociation constant using the following expression.

[H⁺] = √(Ca × Ka)

Ka = [H⁺]²/Ca

Ka = (4.37 × 10⁻³)²/0.3535

Ka = 5.40 × 10⁻⁵

The pKa is:

pKa = -log Ka = -log 5.40 × 10⁻⁵ = 4.27

7 0
4 years ago
F a cold object is placed in a warm room, heat will move from the object into the room cold will move from the object into the r
Masja [62]
Cold is the absence of heat! so heat moves into the object from the environment (room) rapidly~ and it slows down by time and water is formed on the surface of the object because of cold and hot air.
I hope this helps cx
5 0
3 years ago
Calculate the volume of each of the following gases at STP
kherson [118]
For Ar :

1 mol ------------ 22.4 L ( at STP )
7.6 mol ---------- x L 

x = 7.6 * 22.4

x = 170.24 L
-----------------------------------------------------------------
For C2H3:

1 mol ------------ 22.4 ( at STP)
0.44 mol --------- y L

y = 0.44 * 22.4

y = 9.856 L

hope this helps !.



7 0
4 years ago
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