3 4 5 6 7 8
Li Be
B С N O
11
metal
12
metalloid nonmetal unknown
13 14 15 16
Na Mg
AI Si P S
19 20 21 22 23 24 25
26 27 28 29 30 31 32 33 34
K Ca Sc Ti V Cr Mn Fe Co Ni
Ni Cu Zn Ga Ge As Se
37 38 39 40 41 42 43 44
46
47
48 49 50 51 52
Rb Sr Y Zr Nb Mo Tc Ru Rh Pd Ag Cd In Sn Sb Te
55 56
72 73 74 75 76 77 78 79 80 81
83
82
*
84
т LAT
т
A.
Dh
ро
9 10
F Ne
17 18
CI Ar
35 36
Br Kr
53 54
I Xe
85 86
A. D
45
UE
DE
1
Select the correct answer.
Which displacement reaction is most likely to occur? Use the resources to help you.
OA.
A. BaCl2 + Ca → CaCl2 + Ba
B.
BaCl2 + Sr → SrCl2 + Ba
O c. BaCl2 + 2Na → 2NaCl + Ba
D.
BaCl2 + Mg - MgCl2 + Ba
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in scientific notation, the value of the  speed of light in a vacuum

  will be written as 2.995 * 10^8. when this value is represented in the form of

  a * 10^b, then, a = 2.995 and b = 8.

the value of the speed of light in a vacuum given above can also be rounded up to approximately 300000000. in this case, the scientific notation will be written as 3 *10^8.

a rain shadow is a dry region of land on the side that is protected against the prevailing winds of a mountain range. the prevailing winds are the winds that occur most of the time in a particular place of the earth

prevailing winds carry air toward the mountain range. as the air rises up over a mountain range, the air cools, water vapor condenses, and clouds form. on this side of the mountains, called the windward side, precipitation falls in the form of  rain  or snow. this dry air produces a  rain shadow.