Answer: This is evidence that the solution a mixture.
Explanation:
Mixture :
- It is defined as a substance which is made by mixing two or more different materials.
- No chemical reaction occurs between the mixed materials.
- Usually mixture can be separated into its original components.
A solution in a dish contains 4.0 grams of salt dissolved in 100 grams of water. If 50 grams of the water evaporate is a mixture because it is made up two substances salt and water which can be easily separated out by the means of evaporation.
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].
<span> I suppose carbon dioxide produced from burning coal and oil can be recycled and converted to methanol. i hope this answers your question</span>
The question is incomplete, the complete question is;
Decide whether a chemical reaction happens in either of the following situations. If a reaction does happen, write the chemical equation for it. Be sure your chemical equation is balanced and has physical state symbols. situation chemical reaction? chemical equation A strip of solid lead metal is put into a beaker of 0.043M Fe(NO3)2 solution. yes no A strip of solid iron metal is put into a beaker of 0.044M Pb(NO3)2 solution.
Answer:
No
Yes
Explanation:
A single replacement reaction occurs when a metal that is higher in the electrochemical series is placed in a solution of the salt of a metal which is lower than it in the electrochemical series.
For instance, when a strip of solid iron metal is put into a beaker of 0.044M Pb(NO3)2 solution, a reaction occurs as follows;
Fe(s) + Pb(NO3)2(aq) ---------> Fe(NO3)2(aq) + Pb(s)
However, when a strip of solid lead metal is put into a beaker of 0.043M Fe(NO3)2 solution no reaction occurs because lead is lower than iron in the electrochemical series hence it can not displace iron from an aqueous solution of its salt.
HBr is polar, so it exhibits dipole-dipole IMFs. F2 and HBr are a pair of a polar and nonpolar molecule, so the IMFs they have are induced dipole because of the polar nature of HBr.