Answer:
The correct answer is "True".
Explanation:
Inferential statistics derives from statistics that comprise the methods and procedures by which, using induction, it determines the properties of a statistical population from a sample of this population. The objective of this type of statistics is to obtain useful conclusions to be able to make deductions on a population, based on the information of the sample taken from it.
Have a nice day!
Answer:
The number and the kinds of atoms in the compound
Explanation:
- A chemical formula of a compound contains symbols o the atoms of the elements present in the compound as well as the number of atoms of each element in the form of subscripts.
- Therefore it helps us to know the elements in a compound and the number of atoms in the compounds.
Answer:
The pH of the final solution is 0.16 .
Explanation:
The pH of the solution is defined as negative logarithm of hydrogen ion concentration in a solution.
![pH=-\log[H^+]](https://tex.z-dn.net/?f=pH%3D-%5Clog%5BH%5E%2B%5D)
Concentration of HCl = 0.16 M
HCl is a string acid .1 molar of HCl gives 1 molar of of hydrogen ions.
![[H^+]=0.16 M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%3D0.16%20M)
Concentration of 
= 0.52 M
Nitric is a string acid .1 molar of nitric acid gives 1 molar of of hydrogen ions.
![[H^+]'=0.52 M](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%27%3D0.52%20M)
Total hydrogen ion concentration:
![[H^+]''=[H^+]+[H^+]'](https://tex.z-dn.net/?f=%5BH%5E%2B%5D%27%27%3D%5BH%5E%2B%5D%2B%5BH%5E%2B%5D%27)
=0.16 M+0.52 M=0.68 M
The pH of the solution:
![\pH=-\log[H^+]''=-\log[0.68 M]](https://tex.z-dn.net/?f=%5CpH%3D-%5Clog%5BH%5E%2B%5D%27%27%3D-%5Clog%5B0.68%20M%5D)
pH = 0.16
The pH of the final solution is 0.16 .
Answer:
K2CO3 = K2O + CO2
Explanation:
In a chemical equation, the number of atoms on the left needs to be balanced with the number of atoms on the right, and there has to be the same number of the same *type* of atom on both sides as well.
On the left:
2 K
1 C
3 O
and on the right,
2 K
1 O
On the right, there are a few atoms missing, specifically, 1 C and 2 O.
The missing atoms then should be added to the side missing the atoms, preferably in a stable molecule. Luckily, CO2 contains exactly 1 C, and 2 O s, and is quite stable. So, a "CO2" has to be added on the left
Answer:
37.9%
Explanation:
x/100 × 16.9 = 10.5
16.9x/100=10.5
16.9x=1050. (÷ b.s by 16.9)
x=62.1%
100%-62.1%=37.9%
