<span> the answer is that you need 1836 </span>electron<span> to equal the mass of a </span>proton<span>.</span>
Answer:
128 g/mol
Explanation:
The molar mass is how much a mol of the substance weight.
In this question the weight is given (1.570 g).
To find the number of moles in the sample, we use the ideal gas law: PV=RnT
P= 1atm
V= 577mL= 0.577L
R (universal gas constant)= 0.08206(
)
n= number of moles
T= 300°C= 573.15K
Solving for n:
n= 
<em>k</em>
n=0.0123mol
Molar mass=
Molar mass=128
Atomic radius decreases with the increase of atomic number and mass number because the nuclear charge attracts the outermost shell leads to lower distance of the atom.
<h3>
What is the trend of atomic radius across the periodic table?</h3>
Atomic radius decreases when we go from left to right to a period and increases down a group. In a period, effective nuclear charge increases as electron shielding remains the same. An atom gets larger as the number of orbits or shells increases. The radius of atoms increases as you go down the group in the periodic table. The size of an atom will decrease as you move from left to the right in a period. Within a period, protons are added to the nucleus which attracts electrons closer to the nucleus because of its increased positive charge i.e. proton. So that's why we can say that the force of attraction between nuclei and electrons increases, the atomic radius of the atoms decreases.
So we can conclude that Atomic radius decreases with the increase of atomic number and mass number because the nuclear charge attracts the outermost shell leads to lower distance of the atom.
Learn more about atomic radius here: brainly.com/question/15255548
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Answer:
Temperature = 44.02°C
Explanation:
Insulated container indicates no heat loss to the surroundings.
The specific heat capacity of a substance is a physical property of matter. It is defined as the amount of heat that is to be supplied to a unit mass of the material to produce a unit change in its temperature.
The SI unit of specific heat is joule per kelvin and kilogram, J/(K kg).
Now,
Specific heat for water is 4.1813 Jg⁻¹K⁻¹.
Latent heat of vaporization of water is 2257 Jg⁻¹.
Energy lost by steam in it's process of conversion to water, is the energy acquired by water resulting in an increase in it's temperature.
Q= Heat transferred
m= mass of the substance
T= temperature
Also,
L= Latent heat of fusion/ vaporization ( during phase change)
Now applying the above equations to the problem:
Temperature = 44.02°C
Answer:
The statement is true.
Explanation:
&he pressure exerted by a liquid depends on the height of the liquid column. Where h is height and ρ is density. As the height increases, pressure will also increase.
