Which best describes a force?

a vector with magnitude and direction

a vector with speed and strength

a vector with direction only

a vector with strength only

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Relative dating uses laws or principles of stratigraphy and paleontology. These laws of relative dating are:

Which element has the larger atomic radius lithium or potassium

How many grams of hydrogen gas will be produced when you react 40.0 grams of sodium with 25.0 grams of water?

At 101.3 kPa and 298 K. what is the total amount of heat released when one mole of aluminum oxide, Al2O3 (s), is formed from its elements? (1) 393.5 kJ (2) 837.8 kJ (3) 1676 kJ (4) 3351 kJ

In the reaction 2co (g) + o2 (g) â 2co2 (g), what is the ratio of moles of oxygen used to moles of co2 produced? select one:

To what part of a plant does the stem sliver water and nutrients

You place a balloon in a closed chamber at STP. When the balloon doubles in size, what happens to the chamber pressure? A.) The pressure stays the same B.) The pressure doubles C.) The pressure reduced by one half

2K3N + 3CaCrO4 → Ca3N2 + 3K, CrO Give the formula for the second reactant: How many potassium atoms on the reactant side: How many oxygen atoms on the product side?

Why does aluminum most often have an oxidation state of + 3

In the thermal decomposition of copper carbonate, the black solid left behind weights less than the original copper carbonate. Why?