MB 25
126.20
Reza (1)
63
625
689.5 876
625*63
68 9.5876
- 57.1
20. Element Y whose atomic number llreact with chlorine
to form a compound
lo Name the period and the group to which y belongs
Group- Alkali.
Period - 3
(b) Write an equation for the reaction.
Nacs) + Cl2 —> Naclis)
21. Calculate the volume of 0.6Msulphuric visaad solution
needed to neutralize Bocm3 of O2M potassium hydroxide
H₂SO4 + Kolt= Kas04+ H₂O
Moles: Volume XMolarity
ma​

hloride, what is the mass of calcium in

explanation:

the maximum mass of nh3 is nh3 in grams

it can be observed without changing the identity of the object.

it depends on what substance you're talking about as well as many other factors. in quantum mechanics, the observation of particles affects the observers ability to measure certain properties. for example: you can know the velocity of a particle, but you can't know it's position; or you can know it's position, but not it's velocity. it's like trying to find out where a grain of sand is by throwing other grains of sand at it. once you find out where it is, it's been moved. it's also like trying to find an answer to the question of whether or not a tree falling in a forest makes a sound if nobody is there to hear it. paradoxically, the only way to find out is to be there and hear it.