Well because we can use those elements for are own personal use like combining them to make better things like iron is in lots of things. Without knowing alot about the elements we wouldnt know how to use them
The number located in the top right corner of the ion is +2
An ion is an atom or group of atoms which possess an electric charge.
The charge on an ion can be obtained by using the following formula:
<h3>Charge = Proton – Electron </h3>
With the above formula, we can obtain the charge of the ion given in the question above as illustrated below:
Proton = 16
Neutron = 17
Electron = 14
<h3>Charge =? </h3>
Charge = Proton – Electron
Charge = 16 – 14
<h3>Charge = +2</h3>
Therefore, the charge on the ion is +2
Learn more: brainly.com/question/3428265
mol = conc × v
= 1.5 × 0.09
= 0.135 moles of HCl
HCl + NaOH > NaCl + H2O
1 mole HCl = 1 mole NaOH
0.135 mol HCl = x
x = 0.135 mol NaOH
mass = mol × molar mass
= 0.135 × 40
= 5.4 g
NaOH = 23 + 16 + 1 = 40 g/mol
I'm not a 100% sure if it's correct
Answer:
A ( salinity )
Explanation:
The full question is actually:
Which of the following is a chemical property of seawater?
salinity
temperature
density
depth
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mass is the answer 110% sure hope this helps
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