At least 14 to 18 percent of water is being lost each year. I really hope this helps :D
<span>C4H4
The compound in question has an equal ratio of hydrogen and carbon. The atomic weight of carbon is roughly 12 and the atomic weight of hydrogen is roughly 1. The mass of the compound in question is roughly 52.
52/13=4
C4H4</span>
Answer:
D
Explanation:
Erosion is when rocks or sediments are moved around by those means mentioned.
Lewis structure of N2O5 is :
:O : : O:
II II
N N
/ \ / \
:O: :O: :O :
.. ..
or or O2 N-O- NO2
<span>So the covalency of nitrogen is 3 only as one pair of electrons is coordinated with oxygen shown here as having all the six electrons intact.
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Answer: Option A
Explanation: 2 Na + Cl2---> 2NaCl
Here Oxidation no of Na is zero while in NaCl is +1. That means oxidation state of Na increased from 0 to +1 hence oxidation
While Cl2 has zero in molecular form and -1 in NaCl hence Reduction (Oxidation no decreased from zero to -1)
Halogens(cl) always shows -1 oxidation state and IA group elements(Na)shows +1 oxidation state