a) the potassium ion is twice the size of the sulfide ion
14) the formula k2s indicates that
a) the potassium ion is twice the size of the sulfide ion
b) sulfur and potassium form a covalent bond
c) there are two potassium ions for each ion of sulfur
d) there are two sulfur ions for each ion of potassium
15) fluorine, f, forms a binary ionic compound with lithium li. what is the name of this compound?
a) fluorine lithide
b) lithium fluoride
c)lithium fluorine
d) fluorine lithium
16) the standard on which the atomic mass unit is based is the mass of a
a) proton
b) neutron
c) chlorine-35 atom
d) carbon-12 atom
17)two highly reactive elements in period 2 are the metal lithium and
a) metalloid arsenic
b) nonmetal selenium
c) nonmetal fluorine
d)nonmetal krypton
Answers: 1
Physics, 21.06.2019 22:40, kiaunarayne808
The desk has a weight of 75 lb and a center of gravity at g. determine the initial acceleration of a desk when the man applies enough force f to overcome the static friction at a and b. also, find the vertical reactions on each of the two legs at a and at b. the coefficients of static and kinetic friction at a and b are ms = 0.5 and mk = 0.2, respectively
Answers: 2
Physics, 22.06.2019 11:00, zhjzjzzj6325
Afisherman notices that his boat is moving up and down periodically without any horizontal motion, owing to waves on the surface of the water. it takes a time of 2.20 s for the boat to travel from its highest point to its lowest, a total distance of 0.670 m . the fisherman sees that the wave crests are spaced a horizontal distance of 5.80 m apart. (a) how much is the wavelength? (b) find the period of the wave. (c) how fast are the waves traveling? (d) what is the amplitude a of each wave?
Answers: 3
14) the formula k2s indicates that
a) the potassium ion is twice the size of the sulfide ion
a) the potassium ion is twice the size of the sulfide ion
English, 13.06.2020 23:57
English, 13.06.2020 23:57
Mathematics, 13.06.2020 23:57
Mathematics, 13.06.2020 23:57