Answer:
The molecules in 2,14 mol CO is 1, 29 x 10 ^ 24. See the explanation below, please.
Explanation:
We use the number of Avogadro:
1 mol----- 6, 02 x10 ^23 molecules
2,14 mol---- x =(2,14 mol x6, 02 x10 ^23 molecules )/ 1mol
x=1, 29 x 10 ^ 24 molecules
The Empirical formula will be for given compound that is 54.48% carbon, 13.75% hydrogen, and 31.77 % nitrogen is .
<u>Explanation:
</u>
The formula which gives the simple whole number ratio of the atoms of various elements present in one molecule of the compound is understood as empirical formula. This can be more appropriately understood by solving the given problem as follows:
The % of elements given as:
C = 54.48%
H = 13.75%
N = 31.77%
The atomic mass of elements given as:
C = 12 g
H = 1 g
N = 14 g
Calculating number of moles as :
Now, we will divide the least number of moles from number of moles of C, H and N respectively, we will round off the values to an integer value:
For C:
For H:
For N:
Hence, C, H and N are in the ratio of 2:6:1, so empirical formula will be for given compound that is 54.48% carbon, 13.75% hydrogen and 31.77 % nitrogen is .
Answer:
This is based on the masses of one element, that will be combined with a fixed mass of the other element.
Explanation:
This is based on the masses of one element, that will be combined with a fixed mass of the other element. Thoses masses are in a ratio.
This state we can find in 'The Law of Multiple Proportions, which is part of Dalton's atomic theory
We see that in the 2 compounds, the masses of oxygen, that combine with a fixed mass of carbon , will be in proportion.
For the first oxide we have 1g carbon per 1.33 g Carbon
1g /1.33g = 0.752
For the second oxide we have 1g carbon per 2.66g Carbon
1g/2.66g = 0.376
Dividing the mass O per g C of the second (larger value) compound:
2.66 / 1.33 = 2 which is the same as 0.752 / 0.376
thus, it means that the masses of oxygen that combine with carbon are in a 2:1 ratio.
Answer:
b
Explanation:
As the coin is rubbed, the particles in the coin vibrate (presenting kinetic energy in the particles i.e. heat). The heat is transferred as thermal energy.
Answer:
I believe it's D. FE2+ and MgCl2...
Explanation:
Hope this helps!!