When you have both of these ( The periodic table of elements and the formula of your compound) you are able to calculate the R.M.M ( Relative atomic mass) of that compound.
For example the formula of a NaCl ( Table salt ) has the elemnt Na and Cl.
We look at the atomic mass of both of these compounds
Na - 23
Cl - 35.5
R.M.M = 23 +35.5 = 58.5
Hope this helps :).
Electrons are shared in compound X and transferred in compound Y.
<h3>Further explanation </h3>
1. ionic bonding
Bonding that occurs due to electron transfer. Can occur in metal and non-metal atoms. To get stability, atoms release or bind electrons to get stable electron regulation from noble gases
2. covalent bonding
Bonding that occurs due to shared use of electron pairs
The two bound atoms contribute their electrons to produce bonds
Generally occurs in non-metallic elements
So compound X = covalent bond (metal with metal) and compound Y= ionic bond(metal with non metal)
- Compound X : shared electron
- Compund Y : transferred electron
Answer:
B. 1.000 × 10-4 kg
Explanation:
A. 1.000 × 10-8 Mg = 0.00000001 Mg = 0.1 mg
B. 0.0001 kg = 0.1 g
C. 1000 ug = 1 mg
D. 1
.000 × 10-2 cg = 0.01 cg = 0.1 mg
A = D
B > C > A = D
Answer:
provide steels-specific bins to families and provide people to collect the cans
Explanation:
The recycling process plays an important role in the saving of the environment. Recyling of steel cans uses less energy than manufacturing something from the scratch. In addition, the process creates jobs for the people. There are number of recycling usints that are making a living. In order to make the process faster and easier, the coucile can encourage each househild to have a can bin. This will be dedicated to the alumininium cans. This makes iyt easuetr to dispose the bins abs tha vcans. In addition, the council can employ more people who move from house to house collecting the cans.
Answer:
Explanation:
In this case, to calculate the <u>heat of solution</u> (KJ/mol) we have to take into account the mass of water, the specific heat of the water and the temperature change, so:
Δ
With this in mind, we can use the <u>equation</u>:
If we plug the values into the equation we will have:
Now, with the mass value (21.5 g) and the molar mass of LiCl (42.39g/mol) we can <u>calculate the moles of LiCl</u>:
Now, in the heat of solution, we have <u>KJ/mol units</u>. Therefore, we have to <u>convert</u> from J to KJ:
Finally, we can <u>divide</u> by the moles of LiCl:
So, <u>for each mole of LiCl, we have 63.09 KJ involved in the dissolution process.</u>
I hope it helps!
