Answer:
last one
they can contain mercury that is Very harmful to humans
Answer:
Explanation:
One CH4 molecules = 10 electrons ( Carbon 6e + 4Hydrogen 4e)
A mole of any substance witll have = 6.023*10^23 atom/ molecuels,
One mole of any substnce is equal is nothing but its moalr mass
Molar mass of CH4 = 16.04
It mean,
16.04 g of CH4 has = 6.023*10^23 molecules of methane
but
4.2 gram of CH4 = 6.023*10^23 * 4.2 /16.04 = 1.58*10^23 molecuels of CH4
So one molecule has =10 electrons
1.58*10^23 molecuels will have = 1.58*10^23 * 10 = 1.58*10^24
Hope this help you
Answer:
Empirical formula is CCl₄
Explanation:
Given data:
Percentage of carbon = 7.70%
Percentage of chlorine = 92.3%
Empirical formula = ?
Solution:
Number of gram atoms of Cl = 92.3 / 35.5 = 2.6
Number of gram atoms of C = 7.70 / 12 = 0.64
Atomic ratio:
C : Cl
0.64/0.64 : 2.6/0.64
1 : 4
C : Cl = 1 : 4
Empirical formula is CCl₄.
You would eat something that is dense in carbohydrates. These are the fast-acting molecules that can readily provide energy. Hope this helps!
Answer:
Group 15 elements
Explanation:
The nitrogen family is essentially characterized by this configuration. They are trivially know as the picnic tigers or the pectels. Elements in this group includes nitrogen, phosphorus, arsenic, antimony, Bismuth and Moscovium.
We now look at the electronic configuration of these elements.
Nitrogen -
[He] 2s2 2p3
Phosphorus -
[Ne] 3s2 3p3
Arsenic -
[Ar] 3d10 4s2 4p3
Antimony-
[Kr] 4d10 5s2 5p3
We can notice the configuration in the question in the elements.
