3 years ago

When sodium and chlorine make table salt, it releases heat during the reaction. *

Physics

1 answer:

miskamm [114]3 years ago

5 0

Answer:

Which by-product of the chloralkali process is used for the manufacture of bleaching powder?

Ans. Chlorine (Cl2).

Q. 21. Which compound of calcium is used for sterilization of drinking water?

Ans. Bleaching powder (CaOCI2)

Q. 22. What is the action of sulphuric acid on bleaching powder?

Ans. CaOCl2+H SO4 —>CaSO4+H2O+ Cl2

Q.23. What happens when bleaching powder is kept in the air?

or Why bleaching powder gives out a typical smell in the air?

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Calculate the kinetic energy of a 0.032 kg ball as it leaves a hand to be thrown upwards at 6.2 m/s

AnnZ [28]

Answer:

The ball will have a kinetic energy of 0.615 Joules.

Explanation:

Use the kinetic energy formula

$E_k = \frac{1}{2}mv^2 = \frac{1}{2}0.032kg\cdot 6.2^2 \frac{m^2}{s^2}= 0.615J$

The kinetic energy at the moment of leaving the hand will be 0.615 Joules. (From there on, as it ball is traveling upwards, this energy will be gradually traded off with potential energy until the ball's velocity becomes zero at the apex of the flight)

3 0

4 years ago

1. When you shine light with a wavelength of 400 nm at 50% intensity, what is observed?

riadik2000 [5.3K]

Answer:

I think it might be A

Explanation:

the reason I think this answer is because the intensity is 50%.

6 0

3 years ago

If two charged balloons are 24cm apart and they feel a force of electrical repulsion of 20N, what would the force of electrical

OverLord2011 [107]

Answer:

Soory

Explanation:

I really dont know but i will send you wait

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3 years ago

An airplane is at rest on a runway. It accelerates at 10 m/s2 for 15 seconds. How fast is it now traveling?

KATRIN_1 [288]

Answer:

150

Explanation:

v = at

v = 10(15)

v = 150 m/s

6 0

4 years ago

Convertir en utilisant les puissances de 10

kirza4 [7]

Explanation:

Bonjour , pourriez-vous m'aider à faire cet exercice svp ??

a) Convertir les longueurs suivantes en utilisant les puissances de 10.

1,7 cm en mètre

0,48 km en mètre

49 mm en mètre

35 m en centimètre

63 km en mètre

568 Mm en kilomètre

b) Ecrire les longueurs ainsi converties en utilisant la notation scientifique

4 0

3 years ago