During all chemical reactions, mass, energy and charge are

Creativity plays a vital role in science. In what aspects of science is creativity involved?

If 100. ml of a 5.0 M solution is heated on a hot plate until the volume is cut in half, what will the concentration be?

If a nail made of elemental iron [Fe (s) ] is placed in an aqueous solution of a soluble palladium (II) salt [Pd2 + (aq) ], the nail will gradually disappear as the iron enters the solution as Fe3 + (aq) and palladium metal [Pd (s) ] forms.

A girl rubs a balloon against her har. The balloon then has a negative charge. The most likely explanation is that the girl's har A. was uncharged before but now has a positive charge B. was uncharged before but now has a negative charge C.

Many people avoid processed food to eliminate unnecessary ingredients like food dyes and excess sodium from their diets. A study calculated that every 70.

How much energy is needed to convert 57.3 grams of ice at 0.00°c to water at 75.0°c? specific heat (ice) = 2.10 j/g°c specific heat (water) = 4.18 j/g°c heat of fusion = 333 j/g heat of vaporization = 2258 j/g?

A certain first-order reaction (A→productsA→products) has a rate constant of 9.90*10-3 s-1s-1 at 45 ∘C∘C. How many minutes does it take for the concentration of the reactant, [A][A], to drop to 6.

Assign the oxidation number for (NH4) 3PO4

When gold is melted and formed in a mold to make a piece of jewelry, what type of change is taking place?

Do pure substances have the same chemical and physical properties