What is the mass number of an oxygen isotope that has nine neutrons? what is the name of this isotope?

A balanced chemical equation explicitly provides you with the

What are some Nonliving things with each characteristic

Which best describes H2 (g) + cl2 (g) - - > 2hci (g), h = - 184.6 kJ/mol? A. the reaction has no activation energy. B. the reaction is endothermic. C. the reaction requires heat. D. the reaction produces heat.

What is the standard measure of energy in radiation treatment?

Which factors affect electronegativity? A. Number of electrons and atomic radius B. Number of unshielded electrons and density of the element C. Atomic radius and number of unshielded protons D. Density of the element and atomic radius

Calculate the concentration of a solution that has 6.7 moles in a volume of 0.6 liters.

Is sidewalk cement an element or a compound?

1.4 Explain why it is important to support individuals to challenge information about services that may present a barrier to participation

Which describes energy changes during nuclear fission? A very large amount of energy is produced from a tremendous mass. EEUU A very large amount of energy is produced from a very small mass. G .

A 0.75mol calcium carbonate (CaCO3) pellet has what mass?