25 points right !
terrence claims that a new species of bacteria should be placed on the list of bacteria that cause infectious diseases. he ran his experiment several times in one day and got the same results. ben and frieda also ran his experiment multiple times themselves. they never got the same results that terrence did.

what does this indicate about the claim?

it is invalid because it could not stand up to experimentation.
it is valid because only one person needs to validate it.
it is valid because he did the experiment multiple times.
it is invalid because bacteria are always changing.

Label a-f based on the table using c for concentrated and d for dilute

Many reactions take place in aqueous solution. when potential reactants are mixed, a reaction will occur if there is some driving force that favors the formation of products. it is often convenient to categorize reactions in terms of these driving forces: precipitate formation, in which an insoluble solid is formed, weak electrolyte formation, as in a neutralization reaction involving water, or transfer of electrons, as in a redox reaction. these reactions can be represented by full molecular equations, which contain all species in the reaction mixture, or by net ionic equations, which show only the species that actually undergo a change. the latter does not contain the spectator ions, which do not undergo a net change or do not take part in the reaction. part a when the following two solutions are mixed: k2co3(aq)+fe(no3)3(aq) the mixture contains the ions listed below. sort these species into spectator ions and ions that react. drag the appropriate items to their respective bins. view available hint(s) spectator ions ions that react part b what is the correct net ionic equation, including all coefficients, charges, and phases, for the following set of reactants? assume that the contribution of protons from h2so4 is near 100 %.ba(oh)2(aq)+h2so4(aq)→ express your answer as a chemical equation. view available hint(s) nothing provide feedback

The nuclear fission process releases neutrons and question 27 options: alpha particles electrons energy beta particles