2 years ago

Explain the difference between a base and an alkali.

1 answer:

5 0

Answer:

a base is something that reacts with an acid to form water and salt , an alkai is any base that is soluble in water

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nikklg [1K]

Answer:

Butanoic acid

Explanation:

7 0

3 years ago

Margaret [11]

Answer:

physical change

Explanation:

i got the same question sorry for the late response but that's the answer good luck

7 0

3 years ago

jok3333 [9.3K]

Explanation:

It is known that for $NO_{2}$ , ppm present in 1 $mg/m^{3}$ are as follows.

1 $\frac{mg}{m^{3}}$ = 0.494 ppm

So, 150 $pg/m^{3}$ = $\frac{150}{1000} mg/m^{3}$

= 0.15 $mg/m^{3}$

Therefore, calculate the equivalent concentration in ppm as follows.

$0.15 \times 0.494 ppm$

= 0.074 ppm

Thus, we can conclude that the equivalent concentration in ppm at STP is 0.074 ppm.

4 0

3 years ago

sattari [20]

It would have THREE rings/energy levels. This is because of the amount of electrons each orbital can hold.

6 0

3 years ago

antiseptic1488 [7]

It is Pb-208, answer 3.

4 0

3 years ago