What happens to water when it freezes?

Its mass increases.

Its mass decreases.

Its density increases.

Its density decreases.

The balanced reaction equation for combustion of heptane, C 7 H 16, is C 7 H 16 + 11 O 2 ⟶ 7 CO 2 + 8 H 2 O If the reaction produced 23.

Consider any set of three adjacent elements in the same period on the periodic table. for which characteristic is the average for the three elements always equal to the value of the middle element?

Which compound forms an acidic solution when dissolved in water nh4cl nacl kno2?

The molecules in object A possess a higher average kinetic energy than those in object B. Thus: Heat could transfer from object B to object A. Heat could transfer from object A to object B.

Will mark as Brainliest. What type of reaction will occur if ∆H is negative and there are no significant entropy effects? acid-base reaction redox reaction endothermic reaction spontaneous reaction

What happens to a reactant molecules when forming product molecules

Which is the atomic number of an atom with six valence electrons

O2 + CS2 → CO2 + SO2 Which of the following shows the equation balanced?

Convert 970. mm Hg to atm.

The addition of a catalyst in a chemical reaction (A) increases the concentration of products at equilibrium. (B) increases the fraction of reactant molecules with a given kinetic energy.