Answer:
About 7.886 grams
Explanation:
8 sulfurs will have a molar mass of 32.065*8=256.52g, while 32 flourines will have a molar mass of 18.998*32=607.936. In total, this is a molar mass of 864.456.
2.34/256.52 * 864.456=7.886g
Hope this helps!
Answer:
18.
Explanation:
1) according to the reaction (M(Fe)=56; M(O₂)=32; V₀=22.4):
4Fe+3O₂⇒2Fe₂O₃; - ν(O₂)=0.75*ν(Fe);
2) ν(Fe)=m(Fe)/M(Fe)=60/56≈1.071 [mol];
3) ν(O₂)=0.75*1.071=0.804 [mol];
4) V(O₂)=V₀*ν(O₂); ⇒ V(O₂)=22.4*0.804=18 [lit].
Largest
K
Ca
Ga
Ge
As
Br
Kr
Smallest
An example of a solution would be D : Saltwater :)
Answer:
Electromagnetic waves can travel through empty space; mechanical waves can not
Explanation:
The salient differences between electromagnetic waves and mechanical waves is that electromagnetic waves can travel through empty spaces but mechanical waves cannot.
Mechanical waves always requires a material medium for their propagation. No known mechanical waves can pass through an empty vacuum.
Electromagnetic waves on the other hand can pass through vacuum. They do not require a material medium for propagation.
This makes them unlimited in their form and mode of propagation.