Which of the following is a polyatomic ion?

O A N₂

B. HCl

O C. S2

O D. PO43-

What type of sand dunes will likely form if the sand supply is limited, the wind direction is constant, and vegetation is sparse?

The reaction described by H2 (g) + I2 (g) ⟶2HI (g) has an experimentally determined rate law of rate=k[H2][I2] Some proposed mechanisms for this reaction are: Mechanism A (1) H2 (g) + I2 (g) - →k12HI (g) (one-step reaction) Mechanism B (1) I2 (g) ⥫⥬=

A mass of 78.9 grams of alimnium will react with how many grams of zinc chloride

Why does temperature decrease with higher altitude? Air is held strongly together by gravity, so there is less heat transfer. Air density is lower, so there is less heat transfer. Air density is higher, so there is less heat transfer.

Is bef2 polar or nonpolar

The spines and thick wavy cuticle on a cactus are both what

What type of chemical process is used to create perfume?

Which of the following is a polyatomic ion? O A. HCI O B. Na O C. PO, O D. 52

What are the cations and anions for V2 (CO3) 3

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?