What is enthalpy?

A. Enthalpy is the heat involved in a reaction.

B. Enthalpy is the temperature of a reaction.

C. Enthalpy is the mass involved in a reaction.

D. Enthalpy is the kinetic energy of a system.

Read the list of substances. Wood, Copper, Iron, Foam Which substances are good conductors of heat? A. Iron and Foam B. Cooper and Iron C. Wood and Foam D. Wood and Cooper

Which of the following is an element? a. zinc metal (zn) b. carbon monoxide gas (co) c. magnesium chloride salt (mgcl) d. hydrochloric acid (hcl) ?

Consider the structure of the phosphonium ylide formed by treatment of the following haloalkane with triphenylphosphine followed by butyllithium. Draw the structure of the alkene formed by reaction of this phosphonium ylide with acetone.

A catabolic process is a process in which molecules are broken down and energy is released. molecules are broken down and energy is absorbed. molecules are combined and energy is released. molecules are combined and energy is absorbed.

What is the current in amperes if 1200 na + ions flow across a cell membrane in 3.5 μs? the charge on the sodium is the same as on an electron, but positive?

Why is it possible to safely drink a solution that contains a 50:50 mixture of equal concentrations of a strong acid and a strong base, either of which, if ingested separately, would be very caustic and damaging?

Explain why many compounds that contain one or more hydrogen atoms are not classified as arrhenius acids

pure substance x is a green powder. when heated, it gives off a gas and changes to a black powder. is substance x an element or a compound? give reasons

What amount (moles) is represented by each of these samples? a. 20.0 mg caffeine, c8h10n4o2 b. 2.72 1021 mo?

A sample of gas occupies 40.0 mL at - 123°C. What volume does the sample occupy at 27°C if the pressure is held constant? V1T2 = V2T1 Don't forget to convert temperature to kelvin! Group of answer choices 8.80 mL 20.0 mL 80. ML 182 mL