Blog

Heartworms are transmitted by

Going from room temperature, 298 K, to {T} K, the rate of a reaction doubles. Calculate the activation energy for the reaction in kJ/mol.  R = 8.314 x 10-3 kJ/mol Answer format:  Enter in standard notation, not scientific using 3 sig figs.  Do not include units.  

Using information from the previous problem and at the bottom of the page , identify  1) Do the electrons in the wire flow go to the right or to the left? 2) Over time, does the Zn electrode mass increase or decrease? 

Which of the reaction diagrams best shows a reaction with a change in enthalpy, ΔHrxn = -50 kJ/mol and an activation energy, Ea = 50. kJ/mol.

Suppose a Voltaic/Galvanic cell at 298 K runs on the reaction,  Sn(s) + Nr2+(aq)   à  Sn2+(aq) +   Nr(s), where Nr is a fake element with the reduction potential,    Nr2+(aq) + 2e- à Nr(s)         E°1/2 = 0.40 V.  The cell contains the following concentrations in each half cell: Sn(s) /Sn2+, [Sn(NO3)2] = 0.70 M               Nr(s)/Nr2+, [Nr(NO3)2] =  {M} M      What is the value of Ecell?            Answer format:  Enter the answer in Volts but do not include the units.  Enter 2 sig figs in standard, not scientific notation. 

What mass of silver metal (molar mass = 107.87 g/mol) will be formed by passing {I} A through AgNO3(aq) for {t} seconds?  Answer format:  Enter your answer in grams but do not include the units.  Enter 2 sig figs in standard, not scientific notation.

A concentration cell consists of two Zn/Zn2+ electrodes. The electrolyte in side A is {M} M Zn(NO3)2 and in side B is 0.10 M Zn(NO3)2. What is the voltage of the cell at 25°C for this cell running spontaneously?  Answer format:  Enter the answer in standard, not scientific notation using 3 decimal places.  Do not include units.

The term gynecology (gynec/o -female) refers to:

The term integumentary ([integument (covering)+ -ary]) means:

A compound suffix is made up of one word component.