Answer:
All elements with 84 or more protons are unstable; they eventually undergo decay. Other isotopes with fewer protons in their nucleus are also radioactive.
For many solids dissolved in liquid water, the solubilityincreases with temperature. Theincrease in kinetic energy that comes with higher temperatures allows the solvent molecules to more effectively break apart the solute molecules that are held together by intermolecular attractions.
Answer:
P = 162 KPa
Explanation:
Given data:
Number of moles = 2 mol
Volume of gas = 30.0 L
Temperature of gas = 293 K
Pressure of gas = ?
Solution:
The given problem will be solve by using general gas equation,
PV = nRT
P= Pressure
V = volume
n = number of moles
R = general gas constant = 0.0821 atm.L/ mol.K
T = temperature in kelvin
P = nRT/V
P = 2 mol ×0.0821 atm.L/ mol.K ×293 K/ 30.0 L
P = 48.11 atm.L/ 30.0 L
P = 1.6 atm
atm to kelvin:
1.6×101 = 162 KPa
We are tasked to find the percent error of the jeweler's density measurement through the formula:
%Error= Absolute Value(Experimental Value - Theoretical value) x 100%/ Theoretical Value
We are given by the problem,
Experimental Value=20.3 g/cm3
Theoretical Value= 19.3 g/cm3
By Substituting the details,
%Error= Absolute Value(20.3 g/cm3 - 19.3 g/cm3) x 100% / 19.3 g/cm3
%Error=Absolute Value (1)/19.3
%Error= 100/19.3
%Error= 5.18%
Therefore, 5.18% is the percent error committed by the jeweler<span />
Answer:
Agree
Explanation:
The way it makes electicity is that it rubs together fast enother it makes the particles move.
Sorry I can't do better
