Answer:
LOL YOUR PFP OMG SO FUNNY
Answer:
it is made up of two or more element
Explanation:
The emission of a beta particle is the result of the rearrangement of the unstable nucleus of the radioactive atom in order to acquire stability. For that, a phenomenon occurs in the nucleus, in which a neutron decomposes giving rise to three new particles: a proton, an electron (β particle), and a neutrino. The antineutrino and electron are emitted. The proton, however, remains in the nucleus.
The symbol is used to represent beta particles.
Answer: b. Beta
Answer: 1.77 kg of manganese (IV) oxide reacts to produce 1.12kg of manganese metal.
Explanation:
The balanced chemical equation is:
To calculate the moles, we use the equation:
moles of manganese =
According to stoichiometry :
3 moles of is produced by = 3 moles of
Thus 20.4 moles of is produced by = of
Mass of (1kg=1000g)
Thus 1.77 kg of manganese (IV) oxide reacts to produce 1.12kg of manganese metal.
Answer:
B. PEA = KEC. +PEC
Explanation:
From the figure it is clear that there is interconversion between potential energy ( PE ) and kinetic energy ( KE ) , so that total mechanical energy is conserved .
At A only potential energy exists . Kinetic energy is zero .
At B only kinetic energy exists . Potential energy is zero .
At C both potential and kinetic energy exist .
So Potential energy at A is equal to potential energy at C and kinetic energy at C
Ie , PEA = KEC + PEC .
Option B is correct .