Which element, represented by X, reacts with fluorine to produce the compound XF2?

(1) aluminum (3) magnesium

(2) argon (4) sodium

Carbon monoxide is: Only found in large cities An odorless, colorless, toxic gas Healthy to breath in A danger when driving on the open highway

What three factors set convection currents in motion?

Which ecological pyramid cannot be inverted and is only upright

What does an object need to contain in order for a magnet to be attracted

Which phrase describes a solution? A. a homogeneous mixture B. a graduated substance C. a heterogeneous mixture D. a primary mixture of elements

Molybdenum has a body-centered cubic unit cell. how many atoms of mo are present in each unit cell?

A solution of 3 moles of carbon disulfide in 10 moles of ethyl acetate has a vapor pressure of 170 torr at 28°c. the vapor pressure of pure carbon disulfide at 28°c is 390 torr. what is the vapor pressue of pure ethyl acetate at 28°c

What ion does a base give up

Imagine that you could hold two atoms that are bonded together, twist them, and not change the bond length. Would it be easier to twist (rotate) around a single σ bond or around a double σ plus π bond, or would they be the same?

How does the structure of a carbon atom enable it to form large molecules