K2O + CaBr2 ---> CaO + 2 KBr
Unable to read second question properly sorry
Answer:
Approximately 
.
Explanation:
<h3>Number of moles of formula units of magnesium sulfate required to make the solution</h3>
The unit of concentration in this question is "
". That's equivalent to "
" (moles per liter.) In other words:
.
However, the unit of the volume of this solution is in milliliters. Convert that unit to liters:
.
Calculate the number of moles of 
formula units required to make this solution:
.
<h3>Mass of magnesium sulfate in the solution</h3>
Look up the relative atomic mass data of 
, 
, and 
on a modern periodic table:
Calculate the formula mass of using these values:
.
Using this formula mass, calculate the mass of that (approximately) 
of formula units:
.
Therefore, the mass of required to make this solution would be approximately .
Answer:
either first or second if not them try d but I'm pretty sure a also I'm sorry if I getbyou this wrong I dearly apologize
Answer:
It is thinner than the continental crust.
Explanation:
The answer is (in
order from strongest to weakest);
<span>covalent </span>
<span>ionic </span>
ion-dipole
H-bonding
dipole-dipole
<span>van der Waals</span>
A covalent<span> bond is
hardest to break because it involves sharing of electrons by atoms while Van der
Waals is weakest because they involve electrostatic
attraction due to differentially induced
dipoles between atoms and its strength is dependent
on their distance apart. </span>
.
.
.