Answer:
CnH2n+2 is the general formula for paraffins, also known as alkanes, which are saturated compounds with the general formula CnH2n+2, where n is the number of carbon atoms in the molecule. Methane (CH4), often known as C1, is the most basic of the alkanes and has the simplest structure. Normal paraffins (also known as n-paraffins or n-alkanes) are straight-chain molecules with no branches.
Explanation:
Alkanes are referred to as paraffins because they have a low affinity for a general reagent when heated. Alkanes, on the other hand, are non-reactive chemicals. When exposed to extreme circumstances, they have responses.
Answer:
a marble about to reach the bottom of the slope
Explanation:
hope this helps
The atomic number of an element is equal to the number of protons. It the element has a neutral charge then the number of protons equals the number of electrons. The number of neutrons equals the atomic mass minus the atomic number.
ex:
Sodium
Atomic number: 11
Atomic mass: 23
Protons: 11
Electrons: 11
Neutrons: 23 - 11 = 12
Explanation:
As we know that density is the amount of mass present in a liter of solution.
Mathematically, density = ![\frac{mass}{volume}](https://tex.z-dn.net/?f=%5Cfrac%7Bmass%7D%7Bvolume%7D)
As it is given that density of water is 1 g/ml and volume is 175 mL. So, mass of water will be calculated as follows.
density = ![\frac{mass}{volume}](https://tex.z-dn.net/?f=%5Cfrac%7Bmass%7D%7Bvolume%7D)
1 g/ml = ![\frac{mass}{175 ml}](https://tex.z-dn.net/?f=%5Cfrac%7Bmass%7D%7B175%20ml%7D)
mass = 175 g
It is known that 18 g of water contains 1 mole of water. Hence, number of moles present in 175 g of water will be calculated as follows.
No. of moles = ![\frac{mass}{\text{molar mass}}](https://tex.z-dn.net/?f=%5Cfrac%7Bmass%7D%7B%5Ctext%7Bmolar%20mass%7D%7D)
= ![\frac{175 g}{18 g/mol}](https://tex.z-dn.net/?f=%5Cfrac%7B175%20g%7D%7B18%20g%2Fmol%7D)
= 9.72 mol
This means that we have 9.72 moles of ethanol also.
Hence, volume of ethanol present in 175 ml of water will be as follows.
No. of moles of ethanol = ![\frac{density \times Volume}{\text{molar mass of ethanol}}](https://tex.z-dn.net/?f=%5Cfrac%7Bdensity%20%5Ctimes%20Volume%7D%7B%5Ctext%7Bmolar%20mass%20of%20ethanol%7D%7D)
9.72 mol = ![\frac{0.789 g/ml \times Volume}{46 g/mol}](https://tex.z-dn.net/?f=%5Cfrac%7B0.789%20g%2Fml%20%5Ctimes%20Volume%7D%7B46%20g%2Fmol%7D)
Volume = 566.69 ml
Thus, we can conclude that 566.69 ml volume of ethanol contains the same number of molecules as are present in 175 ml of
.
Answer:
A: heat energy
Explanation:
because as we light up the bulb it gives us light energy
but when we touch it we feel that it is hot (heat energy)
the heat energy given of is not for our use and goes to waste