Under what condition(s) is the enthalpy change of a process equal to the amount of heat transferred into or out of the system? (a) temperature is constant (b) pressure is constant (c) volume is constant a only b only c only a and b b and c

What is the formula to calculate pH? $pH=-log[H^{+}]$ $pH=log[H_{2}O]$ $pH=-log[H_{2}O]$ $pH=log[H^{+}]$

What is the name of the compound $C_{3}H_{6}$ ? tricobalt hexahydroxide tricarbon hexahydride hexacarbon trihydride tricarbon hexahydroxide

Which statement best describes metallic bonding? A. Electrons are taken away from a full valence shell. B. Electrons are shared between two atoms. C. Electrons are transferred from one atom to another. D. Electrons are free to move among many atoms.

31. Determine the empirical formulas for the following compounds: (a) caffeine, $C_{8}H_{10}N_{4}O_{2}$ (b) sucrose, $C_{12}H_{22}O_{11}$ (c) hydrogen peroxide, $H_{2}O_{2}$ (d) glucose, $C_{6}H_{12}O_{6}$ (e) ascorbic acid (vitamin C), $C_{6}H_{8}O_{6}$

Use the drop-dowr menus to label each of the following changes P for physical change and C for chemical change. $\square $ The substance changes to a new substance. $\square $ The original substance can be recovered. $\square $ The color changes. $\square $ Gas is produced and given off. $\square $ The substance changes size, shape, or volume.

Consider the reaction $H_{2}(g)+I_{2}(g)\Leftrightarrow HI(g)$ with an equilibrium constant of 46.3 and a reaction quotient of 525.Which direction will the system shift to? The equilibrium will shift to the left to favor the reactants. The equilibrium will shift to the right to favor the products. The equilibrium will not shift in any direction. The equilibrium will shift to the forward reaction.

An atom has the electron-dot symbol shown below. If this atom Is a main group element, what charge will It form in its IonIc state? $\dot {X}$ Multiple Choice $-1$ $-3$ $-5$ $-3$ $-5$

What are the strongest intermolecular forces that cadmium chloride $(CdCl_{2})$ has? Cd is a transition metal. London Dispersion forces C Ion-ion Ion-dipole Dipole-dipole

Question 21 If X and Y are placed in a sealed container with an initial volume of 3.0 L at STP, what volume of Z will be produced? 3L 1L Points 3

What color are wet chemical fire extinguishers for Class K fires? Red White Silver Blue