Answer:
D. MgO
Explanation:
We need to look at the charge of element. (Look at a periodic table for this)
Mg, which is Magnesium, has a charge of 2+ because it's in the second column, or group, from the left.
O, which is Oxygen, has a charge of 2- because it's in the second column, or group, from the right.
Since Mg is 2+, it's the cation and since O is 2-, it's the anion. We can put these two elements together into an ionic compound.
Mg^(2+) and O^(2-) becomes Mg2O2, where we can cancel the 2s: MgO.
Thus, the answer is D.
Hope this helps!
This is true, vapor is just evaporated water. Like in machines, you have to fill it up with water so your machine can produce the water vapor. Hope this helps!!
They are all transioning in states of matter
The density of substance that contain 850 milligrams for every Ml is
0.85 g/Cm³
calculation
<em> </em><em>step 1:</em><em>convert 850 Mg to g</em>
<em>that is 1 mg=0.001 g</em>
<em> 850 mg =? g</em>
<em>= (850 mg x 0.001 g)/ 1 mg=0.85 g</em>
<em>step 2: convert Ml to Cm³</em>
<em> that is 1 Ml = 1 cm³</em>
<em>therefore density =</em><em> 0.85 g/Cm³</em>
