Which is the goal of science to develop new technology to apply information to test hypothesis to expand knowledge

A buffer consists of 0.21 M NaH2PO4 and 0.34 M Na2HPO4. Phosphoric acid is a triprotic acid (Ka1 = 7.2 * 10-3, Ka2 = 6.3 * 10-8, Ka3 = 4.2 * 10-13). (a) Which Ka value is most important to this buffer? Ka1 is most important. Ka2 is most important.

Explain in terms of both electrons and energy how the bright line spectrum of an element is produced

How many atoms are there in 3 moles of Fe?

What is the relationship when as the independent variable increases the dependent variable decreases?

What is represented by the dots in a Lewis electron-dot diagram ofan atom of an element in Period 2 of the Periodic Table?

How would non secretion of of saliva effect digestion of food in the mouth.

Which of the following is insoluble in water? a." (NH) SO b. Na so c. Maso d. ZnSO e Baso

What is the difference between a root word and a combining form? List 2 examples of combining form

What is the octet rule and how does it explain the formation of ionic compounds?

Can somebody explain step by step how to solve decomposition reactions?