Answer: True
Explanation:
Molarity of a solution is defined as the number of moles of solute dissolved per Liter of the solution.
![Molarity=\frac{n}{V_s}](https://tex.z-dn.net/?f=Molarity%3D%5Cfrac%7Bn%7D%7BV_s%7D)
where,
n= moles of solute
= volume of solution in L
![Molarity=\frac{\text {given mass of solute}}[\text {molecular mass of solute} times V_s}](https://tex.z-dn.net/?f=Molarity%3D%5Cfrac%7B%5Ctext%20%7Bgiven%20mass%20of%20solute%7D%7D%5B%5Ctext%20%7Bmolecular%20mass%20of%20solute%7D%20times%20V_s%7D)
Thus when making a molar liquid solution from a dry chemical stock you must know the molecular weight of the compound.
Answer:
4.8
Explanation:
We have assume a right triangle to be formed from the given description so for the altitude we can use the Pythagoras theorem.
a²+b²=c² (where a and b are the side lengths and c is the hypotenuse)
Putting the values that we have.
11²+b²=12²
simplify this,
121+b²=144
subtract 121 from both sides
b²=23
To solve for the missing side/altitude we just need to find the square root of 23
b=√23
It is approximately 4.8
Answer:
Three Oxygen atoms gains two electrons each ( total of six) from two Al atoms, each Al atom loses three electrons (total of six) to three oxygen atom , in this process each Al atom becomes Al3+ ion and Oxygen atom after gaining two electrons becomes O2− ion
Explanation: