Because its made of different materials so it could be strong
Answer:
the mole on my but check LOL LET ME STOP anyway the answer is 100000
Answer:
B. CA, 14
Explanation:
Atoms of elements contain small particles known as electrons, neutrons, and protons. The nucleus of an atom is made up of neutrons and protons which are at the center of the atom. Electrons on the other hand surrounds the nucleus. Electron has negative charge while proton has a positive charge. The number of neutrons is equivalent to the number of protons . In addition, the number of protons is equal to mass number minus the number of electrons.
For the compound , it can be broken down into and . Its ion has a mass of 34 and 18 electrons which means it has already lost 2 electrons.
Therefore:
For the given element, the number of electrons is 18+2 = 20 electrons.
The number of protons = 34 - 20 = 14.
And the number of neutrons is 14.
Only option B has the correct answer.
Electrochemistry should be the answer, If my memory is working right.
Answer:
[HCl] = 2.77 M (option b)
Explanation:
A 10% by mass is an information that means, 10 g of solute are contained in 100 g of solution.
Density is mass / volume and it always corresponds to solution.
So solution mass is 100 g. Let's find out solution volume with density
Solution mass / Solution volume = Solution density
100 g / Solution volume = 1.01 g/mL
100 g / 1.01 g/mL = 99 mL
In conclusion our 10 g of HCl are contained in 99 mL of solution
Molarity is mol of solute in 1L of solution
Let's convert the mass to moles (mass / molar mass)
10 g / 36.45 g/mol = 0.274 moles
Let's convert the mL in L
99 mL = 0.099L
Molarity is mol/L → 0.274 mol / 0.099L = 2.77M