The correct answer is option C, that is, far greater than 118 as elements combine in different ways.
The estimated number of compounds produced by the elements in the periodic table is much greater than 118 as elements can combine in different manners. Compounds are the substances comprising more than one element that is held together with chemical bonds. In addition, they can be transformed into a distinct chemical composition by associating with another compound through a chemical reaction.
3,91·10²⁴ = 39,1·10²³
-----------------------------
110,96g ----------- 6,02·10²³ molecules
Xg ------------------ 39,1<span>·10²³ molecules
X = (110,96</span>×39,1·10²³)/<span>6,02·10²³
<u>X = 720,687g</u>
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Your answer is AIDS good luck
B. warm air rises and takes heat with it; eventually it cools and sinks
Answer:
5 ppb of Cd
Explanation:
Given , Concentration = 0.0050 mg/L
To find this concentration in parts per billion
As,
1 mg per liter = 1 ppm
Parts per billion is defined as the number of the units of the mass of contaminant per thousand million units of the total mass. The relation between ppm and ppb is shown below as:
1 ppm = 1000 ppb
Concluding as:
1 mg per liter = 1000 ppb
So,
0.0050 mg/L = 1000 × 0.0050 ppb = 5 ppb of Cd
