Cordelia researched Ernest Rutherford’s experiments. Read her summary below and find the error. Rutherford’s experiment showed the positively charged particles were only deflected by a small percentage of the atoms. If the positive charge in the atom was spread throughout the atom, this could not happen. This meant that the atom must be composed mostly of solid positive particles.

A. error is in sentence 2. If the neutral charge was spread through the atom, this could not happen

B. error is in sentence 1. Positively charged particles were deflected by a high percentage of atoms.

C. error is in sentence 1. Experiments showed that only a few atoms deflected negatively charged particles.

D. error is in sentence 3. The atom must be composed mostly of empty space.

in the analysis of systems that involve fluid flow, we frequently encounter the combination of properties u and pv.

hydrocarbons are organic compounds that contain only hydrogens and carbons. they can be saturated (those which contain only carbon-carbon single bonds) or unsaturated (those which contain carbon-carbon double or triple bonds) in nature. hydrocarbons can undergo several reactions like substitution, elimination etc.  

on substituting one or more hydrogen atoms in hydrocarbon it results in the formation of haloalkane. as the halogen atoms are large compared to the carbon and hydrogen atoms, due to which the molecular weight increases and the bond become polar because of presence electronegative halogen atom and results in the increase in boiling point of the haloalkane.

thus, the correct option is (b) that is the boiling point of the new compound increases on substituting a hydrogen atom with a halogen in a hydrocarbon.

the answer is a! (2.9 x 10^-18 j) hope i could someone. : )

chemical changes occur when a substance combines with another to form a new substance, called chemical synthesis or, alternatively, chemical decomposition into two or more different substances. these processes are called chemical reactions and, in general, are not reversible except by further chemical reactions. some reactions produce heat and are called exothermic reactions and others may require heat to enable the reaction to occur, which are called endothermic reactions. understanding chemical changes is a major part of the science of chemistry.