( 6.50 mol * 17 mol * 1.0079g )/ 8 mol = 13.9 grams
Answer:
5.96 g/cm^3
Explanation:
Corner atom = 1/8
Atoms in center = 1
Atoms in face of the cube= 1/2
Molar mass of V = 50.94 g/mol <em>(from period table)</em>
1 mole = 6.02x10^23
<em>In BCC unit cell:</em>
(8 x 1/8)+ 1=2 per 1 unit cell
<em>Mass: </em>2(50.94g)/6.02x10^23 = 1.69x10^-22 g/unit cell
305pm=(305x10^-12m÷10^-2m) x (1mL÷1cm^3)
= 2.837 x 10^-23 mL
<em>1pm=10^-12m</em>
<em>1cm=10^-2m</em>
<em>1mL=1cm^3</em>
<em></em>
density=mass/volume
density of V = 1.69x10^-22g÷2.837x10^-23mL
=5.957g/mL
=5.96g/cm^3
Answer: 4 mol H2O2
Explanation:
First we need to write an equation that relates H2O2 to H2O (water)
H2O2 --> H2O + O2
Now we need to balance the equation so there's the same amount of atoms on each side. We can do this by adding a 2 in front of the H2O2 and H2O. So our balanced equation is now:
2 H2O2 --> 2 H2O + O2
Now, we do dimensional analysis to answer the question.
4 mol H2O * (2 mol H2O2)/(2 mol H2O) = 4 mol H2O2
Answer:
dissolving is classified as a physical change because it can be reversed back to its original form
explanation:
Dissolving is an example of a reversible change. For example, when salt is mixed with water it disappears because it dissolves in the water to make salty water. But we can get the salt can back again by boiling off the water. That leaves the salt behind.
Answer:
THE FINAL TEMPREATURE OF IRON SWORD IS
1331°C