Answer:
There are 12 atoms in the compound
Scientists often repeat one or more steps several times.
Answer:
The right answer is "![[Na^+]=5.57 \ ppm](https://tex.z-dn.net/?f=%5BNa%5E%2B%5D%3D5.57%20%5C%20ppm)
".
Explanation:
The given values are:
According to the question,
The concentration of standard will be:
= 
= 
= 
Coffee after dilution,
⇒ 
or,
⇒ 
On substituting the values, we get
⇒ 
⇒ 
⇒ 
hence,
In unknown sample, the concentration of coffee will be:
= 
= 
= 
Where it is on the periodic table
Explanation:
The properties of elements can be predicted by where it is located on the periodic table.
The periodic table is an arrangement of elements based on the their atomic numbers.
Arrangement of elements in the periodic table follows a systematic manner such that it now known that elements in the same vertical column have the same chemical properties.
Elements to left on the table are mostly metals. Those to the left are non-metals.
The position of an element on the periodic table determines its properties
learn more:
Periodic table brainly.com/question/2014634
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Answer:
B. 16
Explanation:
Cl -35 and Cl-33 have the same number of protons because it is the same element Cl.
Their masses are different because they have different number of neutrons.
Cl- 33 has 2 neutrons less than Cl-35.
35 - 33 = 2
If Cl-35 has 18 neutrons, then Cl-33 has 18-2=16 neutrons.
