What layer of the sun is after the core

Consider the group 1a elements sodium (period3), potassium (period 4) and rubidium period 5). whatwould you predict about the ionization energies of theses elements?

Which of the following is typical of an endothermic reaction? The reaction container is warm. The reaction container is cold. Light is a product of the reaction. Sound is a product of the reaction.

What did J. J. Thomson discover about the atom that changed the atomic model previously used?

Which of the following elements would you expect to behave most like magnesium? a) sodium b) calcium c) aluminum d) scandium

If a substance has a half life of 45 days, how much of the original substance would be left after 90 days?

Write the Chemical formula for the conjugate base of the following Bronsted-Lowry acids. A) H2SO4 B) HPO4^2-

The heat from the bonfire is transferred to the student's hands through the process of

How many atoms are present in 0.0845 moles of tungsten (W) ?

Indicate which reactions are redox reactions. check all that apply. check all that apply. 2na (s) + cl2 (g) →2nacl (s) cd (s) + pb2 + (aq) →cd2 + (aq) + pb (s) pb (no3) 2 (aq) + 2licl (aq) →pbcl2 (s) + 2lino3 (aq) c (s) + o2 (g) →co2 (g)

If the mass of a material is 119 grams and the volume of the material is 20 cm3, what would the density of the material be?