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Marina86 [1]
2 years ago
9

Ipt Which of the following is true about semipermeable membranes?

Chemistry
1 answer:
mariarad [96]2 years ago
5 0
C is the correct answe
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HELP ME, MARKED AS BRAINEST
ELEN [110]

Answer:

The answer is B

Explanation:

2Na + 2H2O = 2NaOH + H2

5 0
2 years ago
Identify some other substances (besides KCl) that might give a positive test for chloride upon addition of AgNO3. do you think i
nlexa [21]

Answer:

-The other substances that give a positive test with AgNO3 are other chlorides present, iodides and bromide.

-It is reasonable to exclude iodides and bromides but it is not reasonable to exclude other chlorides

Explanation:

In the qualitative determination of halogen ions, silver nitrate solution(AgNO3) is usually used. Now, various halide ions will give various colours of precipitate when mixed with with silver nitrate. For example, chlorides(Cl-) normally yield a white precipitate, bromides(Br-) normally yield a cream precipitate while iodides (I-) normally yield a yellow precipitate. Thus, all these ions or some of them may be present in the system.

With that being said, if other chlorides are present, they will also yield a white precipitate just like KCl leading to a false positive test for KCl. However, since other halogen ions yield precipitates of different colours, they don't lead to a false test for KCl. Thus, we can exclude other halides from the tendency to give us a false positive test for KCl but not other chlorides.

5 0
3 years ago
1. What type of battery was made by alternating layers of silver, zinc and blotting paper soaked in salt?
Sunny_sXe [5.5K]

Answer:

voltaic piles

Explanation:

:3

4 0
3 years ago
Read 2 more answers
Which planet do scientists believe prevented the asteroids in the asteroid belt from forming a planet? A. Earth B. Jupiter C. Ma
True [87]
I woud say B because jupiter has more of a gravitational pull

5 0
3 years ago
Read 2 more answers
Why are covalent bonds between hydrogen and nitrogen or oxygen polar? see section 2.1 ( page 57) ?
ASHA 777 [7]
Polar molecules exhibit an unequal balance of charges between the individual elements of the compound. This is brought about by the large difference in their electronegativities. The H atom has the least amount of electronegativity. Then, it is a known periodic trend, that as you go downwards in a group, electronegativity decreases, and increase as you go from left to right. Thus, you can deduce that the most electronegative elements are found in the upper right corner which includes O, N and F atoms. Any bond created between Hydrogen and any of O, N and F atoms is a polar bond.
3 0
3 years ago
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