Answer:
20 hydrogen atoms
Explanation:
Let us carefully observe the words of the question. We were told that the compound is a hydrocarbon. This implies that it is composed of only hydrogen and carbon.
Secondly, we are informed that the compounds is composed of only C-C single covalent bonds. This means that the compound is an alkane.
Then we are told that it contains nine carbon atoms and is a linear molecule. Hence, the compound must be n-nonane.
Recall that for alkanes, the general molecular formula is CnH2n+2 Substituting n=9 for nonane we have; C9H(2*9)+2 which is C9H20.
Thus there are 20 hydrogen atoms. The structure of the compound is attached to this answer
They found that difference occurs in the speed of both sound and charges occur due to the difference in the type of medium.
Sound and charges needs specific medium for faster movement i.e. sound moves faster in solid as compared to liquid and gas whereas charges moves faster and easily in gold due to lower resistance which is followed by copper. Sound can move from solid, liquid and gases whereas charges move only in solid metal in which free electrons are present. The speed of sound and flow of current are affected due to difference in the arrangement of atoms in solid, liquid and gas.
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Answer:
both will be at liquid state. the particles will move rapidly in all directions and will collide with other particles in random motion
The answer to this question would be: <span>its concentration is half that of the cl− ion.
When CaCl2 molecule dissolved, it will split into one Ca2+ ion and two Cl- ion. That means for every 1 CaCl2 there will be 3 ions formed. In this case, the amount of Ca2+ should be half of Cl- ion. An element with higher valence tends to have less atom in a molecule than an element with lesser valence </span>electron.