Chemistry, 11.12.2019 01:31, vanenav2003ovf1lz
Platinum, which is widely used as a catalyst, has a work function φ(the minimum energy needed to eject an electron from the metal surface) of 9.05 x 10-19 . what is the longest wavelength of light which will cause electrons to be emitted?
a. 2.196×10-7m
b. 4.553×10-6 m
c. 5.654 x 102 m
d. 1.370 x 1015 m
e. > 106 nm
Answers: 2
Chemistry, 22.06.2019 00:30, TMeansStupidity
Jessica is traveling from miami, florida, to chicago, illinois. using the map, tell one way the land will change during the second half of her trip.
Answers: 1
Chemistry, 22.06.2019 04:50, aletadaboss
Acompound contains c, h, and o atoms. when 1.130 g of the compound is burned in oxygen, 1.064 g co2 and 0.3631 g h2o are produced. what is the empirical formula of this compound?
Answers: 1
Chemistry, 22.06.2019 06:40, CylieTbh
Which statement is usually true about the relationship between activation energy and reaction rates? low activation energy barriers result in low rates. high activation energy barriers result in low rates. low activation energy barriers result in no reaction. high activation energy barriers result in no reaction.
Answers: 3
Chemistry, 22.06.2019 07:30, 10040813
The table compares the number of electrons in two unknown neutral atoms. comparison of electrons atom number of electrons a 10 d 11 use this information to determine the number of valence electrons in the atoms. which of the following correctly compares the stability of the two atoms? both are unreactive. both are highly reactive. a is unreactive and d is reactive. a is reactive and d is unreactive.
Answers: 3
Platinum, which is widely used as a catalyst, has a work function φ(the minimum energy needed to eje...
Mathematics, 17.09.2021 19:40
Biology, 17.09.2021 19:40
Mathematics, 17.09.2021 19:40
Biology, 17.09.2021 19:40
Mathematics, 17.09.2021 19:40