مساعدة في حل اسئلة الفصل الخامس كيمياء

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شكرا مرررره الله يعطيك العافية
معليش ممكن كمان تساعدني في دي المسئلتين من شابتر 5
What total gas volume (in liters) at 520oC and 880 torr would result from the decomposition of 33 g of potassium
bicarbonate according to the equation:
2KHCO3(s) K2CO3(s) + CO2(g) + H2O(g)
(a) 56 L
(b) 37 L
(c) 10 L
(d) 19 L
الاجابة d
Calculate the weight of KClO3 that would be required to produce 29.5 L of oxygen measured at 127oC and 760 torr.
2KClO3(s) 2KCl(s) + 3O2(g)
(a) 73.5 g
(b) 12.2 g
(c) 14.6 g
(d) 24.4 g
الأجابة a
ممكن اعرف الطريقة
بنسبة لشابتر 7 كمان ابغى المساعدة
What are the valence electrons of gallium Ga?
a) 4s2
b) 3d3
c) 4s24p1
d) 3d5

The n = 2 to n = 6 transition in the Bohr hydrogen atom corresponds to the __ of a photon with a wavelength of__ nm.
a) emission, 411
b) absorption, 411
c) absorption, 657
d) emission, 389

The angular quantum number is 3 in __________ orbitals.
a) s
b) p
c) d
d) f
The n = 1 shell contains __________p orbitals. All the other shells contain __________p orbitals.
a) 3, 6
b) 0, 3
c) 6, 2
d) 3, 3

The 3p subshell in the ground state of atomic xenon contains __________ electrons.
a) 2
b) 6
c) 36
d) 10

The principal quantum number for the outermost electrons in a Br atom in the ground state is __________.
a) 2
b) 3
c) 4
d) 5

Which of the subshells below do not exist due to the constraints upon the angular quantum number?
a) 2s
b) 2d
c) 2p
d) none of the above

Which quantum number determines the energy of an electron in a hydrogen atom?
a) n
b) n and ℓ
c) ml
d) ℓ
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