In the formula XF2, the element represented by X can be classified as a (1) Group 1 metal (2) Group 2 metal (3) Group 1 nonmetal (4) Group 2 nonmetal

In the example above, imagine that the sunlight, solar cell, and fan form a closed system and no heat is generated.

Can you imagine a situation in which the reserve of a fuel might be increased?

A mole of gas at 0.0oC and 760. torr occupies 22.4 L. What is the volume of this gas at 25. oC and 760. torr

Which statement explains why water is classified as a compound? (1) Water can be broken down by chemical means. (2) Water is a liquid at room temperature. (3) Water has a heat of fusion of 334 J/g. (4) Water is a poor conductor of electricity.

Which describes what happens when a wave transfers energy? A. Waves carry energy toward the energy source through space or through matter, and the matter moves with the energy. B.

Pf3cl2 is a nonpolar molecule. based on this information, determine the f-p-f bond angle, the cl-p-cl bond angle, and the f-p-cl bond angle. enter the number of degrees of the f-p-f, cl-p-cl, and f-p-cl bond angles, separated by commas (e. g.

What is the empirical formula of a substance that contains 2.64g of C, 0.444g H and 3.52g of O

How many liters of space will 7.80 moles of methane gas (CH4) occupy at STP

Which is an example of the flow of heat through conduction? Hot air rises to the top of the room A hot-air balloon rises into the sky Heat flows from a hot liquid to a pot handle Heat causes winds to blow from the water to the land

Jin listed some common thermal insulators and conductors in a chart. A 2-column table with 2 rows. The first column labeled Insulators has entries rubber, air. The second column labeled Conductors has entries copper, X.