The English traded their guns with the Indians, in turn the Indians ended up just using the guns against their own Indian enemies rather then shooting down the English. I however do not know what the Indians gave back in return for the guns. Land maybe? no they did not trade there land the English stole it of them and put them into reserves they traded guns for coats and clothes
Atomic mass is the number of protons present in the nucleus or number of electrons revolving around the nucleus in an atom .It is denoted by Z.
Mass number is the sum of number of protons and neutrons present in a nucleus in an atom .It is denoted by A.
By taking the wieghted averages of naturally occurring isotopes of that element. :)
The Universal gas constant is R is independent of the gas taken.. While the Characteristic gas constant depends on the mol. mass of the gas.... The Characteristic gas constant of a gas or a mixture of gases is given by the molar gas constant, divided by the molar mass (M) of the gas/mixture. R(Characteristic) = {R}/{M} Well,this is just the basic...u can relate them both to the Boltzmann constant.. Here are some of the standard values for both: Values of R Units 8.314 472(15) J K−1 mol−1 0.082057 46(14) L atm K−1 mol−1 RChar for dry air Units 287.058 J kg−1 K−1 ok,i guess this is it!Hope this clears it...
It is the no.of particles in 1 mole of that Substance.
In SI units J K-1 mol-1 (Joules/ Kelvin mol or Joules per kelvin per mol)
in some older chemistry text books they quote L atm K-1 mol-1 (liter atmospheres per degree kelvin per mol)
(see wikipedia "Gas constant" for a list of the dimensions in other systems of units)
The element that has the closest mass to 89 is Yttrium(88.91).
In physics, a dielectric is an insulating (or very poorly conducting) material. The material can be solid, liquid or gaseous. When a voltage difference is applied to top and bottom of a cylinder filled with a dielectric, no current will flow inside the cylinder because, unlike metals, a dielectric has no free-or loosely bound-electrons that can drift through the material. Instead, electric polarization occurs. The positive charges within the dielectric are displaced minutely in the direction of lower voltage, and the negative charges are displaced minutely in the opposite direction. When the molecules constituting the dielectric are polar (like water molecules), the molecules will align in the field, thus contributing to the electric polarization. Inside the cylinder no net charge density will arise because the charges in adjacent volume elements cancel. However, at the top and bottom of the cylinder an uncanceled surface charge will appear, and this surface charge (positive at the low voltage side and negative at the high voltage side) will oppose the electric field associated with the voltage difference. Thus, the polarization of the dielectric reduces the electric field inside the dielectric. Dielectric material is characterized by an intrinsic property called relative permittivity, usually denoted by εr (formerly this was known as the dielectric constant). The relative permittivity describes the ease of the polarization of the material and determines the size of the surface charge densities at the top and bottom of the cylinder. The Coulomb force between two permanent electric point charges placed inside a dielectric medium is 1/εr smaller than it would be in a vacuum due to the polarization of the dielectric medium by the point charges. The quantity of electric energy stored per unit volume of a dielectric medium is proportional to εr. The capacitance of a capacitor filled with a dielectric is a factor εr greater than it would be in vacuum. Reference: http://en.citizendium.org/wiki/Dielectric
Dielectric is a substance that can transport electricity without conducting it.
If any other units are used, the value will be different.
--Depending on the units you chose the value of the constant differs
A dielectric is an insulating material that does not conduct electricity and is transparent to an electromagnetic field. Dielectric materials are used to separate conducting surfaces such as the plates inside a capacitor, wires inside transformers, electric cable conductors, and elsewhere in the electric industry where electrical separation of charged elements is necessary. The dielectric constant is a ratio of the capacitance of a capacitor in which a particular insulating material is the dielectric, to the capacitance of the capacitor in which a vacuum is the dielectric.
The atomic number of tellurium (Te) is 52.
The atomic weight of Te 127.60 grams per mole.
See the Web Links to the left of this answer for a periodic table with more information about this element!
The isotopic composition of natural uranium is not absolutely identical in all ore samples; this is valid also and for other elements. The long geological evolution can influence the isotopic composition.
YES IT IS. Any quantity which is ratio of two physical quantities having same unit is dimensionless. Dielectric constant is ratio of Permittivty of medium to the permittivity of free space. As Permittivity of medium and permittivity of free space both have same units(F/m ie Farad/meter) dielectric constant becomes dimensionless quantity
the element that has an atomic mass of 16.00 is sulfer.
The gas constant (R) makes both sides of the ideal gas equation (PV=nRT) equal. It is therefore called the proportionality constant in the ideal gas equation. The value of R is 8.314 J/mol˚K. If you divide the ideal gas constant by Avogadro's number you get R/NA=(8.314 J mol-1 K-1)/(6.022x1023 #of atoms mol-1)=1.38x10-23 J/(atoms x K) since the mol-1 terms cancel out. This value is the Boltzman constant (kb) usually expressed in units of J/K (energy/temperature) and it gives the average energy of a single atom or molecule at an absolute temperature T. Just multiply kb by T and you get energy in Joules.
47 neutron and 36 proton and 36 electron because its atomic number is 36.
Silicon has a Atomic Mass number (weight of protons and neutrons) of 28.09. Its actually 28.0855
Values of general gas constant are: (value dependant on units)
R = 0.08205746 [atm. ℓ.mol-1.K-1]
R = 8.314472 [Pa.m3.mol-1.K-1 or J.mol-1.K-1]
R = 1.99 [Cal.mol-1.K-1]
Bromine is a non meta element. Atomic mass of it is 80.
Values of general gas constant are:-
R = 0.082 atm. â„“.mol-1.K-1
R = 8.314 Pa.m3.mol-1.K-1
R = 1.99Cal.mol-1.K-1
The mass of a neutron is approximately the mass of a proton...so
= 1.66 X 10 -27 kg
-------------------------------approximate neutron mass
Electron mass.
= 9.109 X 10 -31 kg
-----------------------------------so,
1.66 X 10 -27 kg/9.109 X 10 -31 kg
= about 1822 electrons to equal mass of neutron
================================
Avogadro's number of any particles or countable objects, equals by definition 1 (exact) mole.
The conversion factor you need for this problem is Avogadro's number.
(6.02 x 1023 atoms scandium/1 mole scandium) = 1
... OR ...
(1 mole scandium/6.02 x 1023 atoms scandium) = 1
Since you want to end up in units of moles of Sc, this goes in the numerator (on top). You want to convert from atoms Sc, so this goes in the denominator (on the bottom).
atoms Sc1 mole Sc = moles Sc6.02E+23 atoms Sc
Atomic mass is the number of protons and neutrons in an atom.