Orbitals are defined by which term?

• spin direction

• energy level

• composition

• number of electrons

Which of the following is NOT a characteristic of a strong acid? The acid dissolves completely in water All are characteristics of a strong acid The acid conducts electricity Parts of the acid still remain when it is dissolved in water

Technician A says on a correctly operating gas accumulator, precharge pressure should be checked during a 500-hour preventative maintenance inspection.

What does glycine betaine do for the leaves flowers and fruits in cold-exposed plants?

Which sample contains particles in a rigid, fixed, geometric pattern? (1) CO2 (aq) (3) H2O (ℓ) (2) HCl (g) (4) KCl (s)

Find the normality of the solution containing 5.300 g/L of Na2CO3?

If you were asked to convert 4.2 x 1022 atoms of aluminum to moles, which of the following should you use for the conversion?

Carbonic acid (H2CO3) does not dissortate 100 percent in water. What type of substance is it? weak acid Strong base strong acid weak base

The standard enthapy of combustion of solid urea co (nh2) 2 is - 632kjmol-1 at 298k

What happens to an isotopes during radioactive

Why does the effective nuclear charge increase across a row of the periodic table?