Which of the following is the electron configuration for an electrically neutral atom of beryllium(be)?
1s^2 2s^2

1s2^2s2^2p^6

1s^22s^22p^4

1s^22s^22p^44d^2

A+b→2c when the reaction begins, the researcher records that the rate of reaction is such that 1 mole of a is consumed per minute. after making changes to the reaction, the researcher notes that 2 moles of a are consumed per minute. what change could the researcher have made to effect this change?

If 3 moles of a compound use 24 j of energy in a reaction, what is the a hreaction in j/mol?

The characteristics of two different types of reactions are shown below: reaction a: electrons are gained by the atoms of an element. reaction b: protons are lost by the atom of an element. which statement is true about the atoms of the elements that participate in the two reactions? their identity changes in both reaction a and reaction b. their identity changes in reaction a but not in reaction b. their identity changes in reaction b but not in reaction a. their identity remains the same in both reaction a and reaction b.