Answer: The nuclide symbol of X is 
Explanation:
The given nuclear reaction is a type of alpha decay process. In this process, the nucleus decays by releasing an alpha particle. The mass number of the nucleus is reduced by 4 units and atomic number is also decreased by 2 units. The particle released is a helium nucleus.
The general equation representing alpha decay process is:
For the given equation :
As the atomic number and mass number must be equal on both sides of the nuclear equation:
Thus the nuclide symbol of X is
Answer:
cW = 4.2J/g.k
Explanation:
Heat gained = Heat lost
iron(mc∆€) = water(mc∆€)
mi= 100g
ci = 0.449
∆€i= 150-25 = 125
...
mw= 268.5g
cw = ?
∆€w=25-20 = 5
...
100×0.449×125= 268.5×cw×5
5612.5= 1342.5cw
cw = 5612.5/1342.5
cw= 4.18 ~ 4.2J/g.K
The speed of sound depends on the elasticity and density of the medium through which it is traveling, a.k.a sound travels faster in liquids than in gases and faster in solids than in liquids. The greater the elasticity and the lower the density, the faster sound travels in a medium.
Answer: A compound is a substance made up of a definite proportion of two or more elements. A chemical formula tells us the number of atoms of each element in a compound. It contains the symbols of the atoms of the elements present in the compound as well as how many there are for each element in the form of subscripts.
Explanation: there is no explanation i copied it off of google
:)
Answer:
NH3OH⁺ is the strongest acid
Explanation:
NH2OH + CH3NH3⁺ 
CH3NH2 + NH3OH⁺
Equilibrium favours backward, so NH3OH⁺ is giving H⁺ so NH3OH⁺
The system lies to the left so the reaction is going in backward direction.
So CH3NH2 reacts with NH3OH⁺ to give NH2OH it implies that the H+ is transferred from NH3OH⁺ to CH3NH2, so here the strongest acid is NH3OH⁺. strongest base will be: CH3NH2.
Thus, Equilibrium favours backward, so NH3OH⁺ is giving H⁺ so NH3OH⁺ is the strongest acid
