Start Discovering Solved Questions and Your Course Assignments
TextBooks Included
Active Tutors
Asked Questions
Answered Questions
q what is the electromagnetic spectrumanslight is a very small slice of the electromagnetic spectrum just the wavelengths that our eyes can see which
each element has a unique number of protons this unique number is known as the elements atomic number all atoms of a given element have the same
beginning in the early nineteenth century scientists developed models to explain the structure of the atom as more information was discovered about
q what is atomic mass unitsans notice in the last column of the table the masses of the subatomic particles are reported in atomic mass units the
q illustrate properties of protons and neutronsanswe now know that following fundamental properties of protons and neutrons1 the proton has a charge
q composition of the nucleussince the time of rutherford other scientists have learned a significant amount about the fundamental properties about
q determine mass of an electronans three years later after jj thomson discovered the electron the american scientist robert millikan used an oil drop
q determine mass to charge ratio of the electronanseventually thomson was able to find the ratio of the electrons mass to its electrical charge me
q what are the subatomic particlesanswhat does the inside of atom look like following daltons discovery that all matter was composed of atoms
q explain important properties of energyproperties of energythere are two important laws that explain the important properties of energyconservation
q what are the diffrent forms of energyans kinetic energy is energy of motion gas molecules of a given substance move much more rapidly than do the
q illustrate classification of matterpure substancesin order to understand what a pure substance is you must think of it on an atomic levelelements
matter is anything that has mass and takes up space the term matter refers to all the materials or stuff making up the universe everything you see
the molar concentration of an hcl solution is 124 moll how many moles of hcl is in 150 l of hcl
0205g of a metal on treatment with dilute acid gave 1066ml of hydrogen collected over water at 755mm pressure and 17 degree celsius calculate the
acetic acid has less conductivity due to it ionizes less in solution hcl divides almost completely in solution to form the ions cl- and
what is the net charge of a non-ionized atomin an atom the number of protons is equivalent to the number of electrons and that single proton has the
where is tin obtainedans tin is obtained in several places tin is found mainly in the ore cassiterite which is originate in malaysia bolivia thailand
what is the structure of a dna moleculeans the dna molecule having of two complementary strands oriented in an anti-parallel fashion every strand is
a medicine dropper is an instrument used to calculate small amount of liquids usually in
there are thirty 30 electrons in benzene this contains 24 carbon electrons and 6 hydrogen electrons there are 12 electrons shared among c and h and
alum is a chemical aluminum potassium sulphate it tends to be whitish powder with various
what is the dipole moment of chloro-octaneans there are many forms of the molecule chloro-octane this is due to the chlorine atom can be attached to
any chemical species that has a tendency to accept electrons and thereby undergoing reduction themselves is known as an oxidizing
explain and define standard feat of formationans the amount of heat liberated of absorbed when single mole of compound is formed in its standard