Answer:
A
Explanation:
2.60 g of CoCl2 was dissolved in water to make 100 mL of solution.
Number of moles of CoCl2 dissolved = mass/molar mass
= 2.60/130
= 0.02 mole
Molar concentration of solutions = number of moles/volume (dm3)
= 0.02/0.1
= 0.200 M
Hence, the molar concentration of thesolution is 0.200 molar.
Correct option = A
Probably protons because when it changes it becomes a whole new element
1.formular masses
2. molecular masses
3.energy and volume
4.density
It tends to decrease! :(
Hope this helped, and brainliest much appreciated! Have a wonderful day!:)
It floats away. Does it get affected by the salt?