4 years ago

Need help on both #19 and #20 please

Chemistry

1 answer:

ziro4ka [17]4 years ago

5 0

This is the answer to question 19. If it’s not clear, send me a message.

You might be interested in

The pungency of chillies is due to ____________.

Vera_Pavlovna [14]

Answer:

The hotness or pungency of chilli is due to presence of a group of compounds called capsaicinoids. Among capsaicinoids, capsaicin and dihydrocapsaicin are present in major quantities, while homocapsaicin, nordihydrocapsaicin and homo-dihydrocapsaicin are present in very small quantities.

3 0

3 years ago

Read 2 more answers

If the temperature of a gas changes but the number of moles and volumes remain which is the values must also change ?

lapo4ka [179]

Answer: I don’t know

Explanation:

6 0

3 years ago

Which selection contains elements that are all in the same period?

mezya [45]

Answer:

Hg, Tl, Pb, Bi.

Explanation:

The elements that are all in the same period are: Hg, Tl, Pb, Bi.

Kindly, find the attached image that show that all elements are in period 6.

Rb, Sr, La, Zr :

All are in period 5 except La is in period 6.

Al, Ga, Si, P :

All are in period 3 except Ga is in period 4.

N, O, Cl, Br:

N, and O are in period 2. While Cl is in period 3 and Br is in period 4.

4 0

4 years ago

What are the limitations of the van der Waals equation.

jeka57 [31]

Limitations of Van der waal's equation. (i) The value of 'b' is not constant but varies with pressure and temperature. (ii) The value of is not equal to 3b, but actually it is equal to, in some case; and in other cases 2b. (iii) The value of is not equal to but it is usually more than 3 for most of the gases.

8 0

3 years ago

Which of the following describes an element that is oxidized in a reaction

Free_Kalibri [48]

Answer: C. Al yields $Al^{3+}+ 3e^-$