Answer:
0.047 M
Explanation:
Given data:
Volume of KF = 93.2 mL
Molarity of KF = 2.03 M
volume of water added= 3.92 L
Solution:
First of all we will calculate the number of moles of KF.
number of moles = Molarity × volume in litter
number of moles = 2.03 mol/L × 0.0932 L
number of moles = 0.189 mol
Molarity of solution:
Total volume = 3.92 L + 0.0932 L = 4.0132 L
Molarity = number of moles / volume in litter
Molarity = 0.189 mol/ 4.0132 L
Molarity = 0.047 M
Answer: 
: Pure substance, Element
: Pure substance , Element
: Pure substance, Compound
Explanation:
Element is a pure substance which is composed of atoms of similar elements.It can not be decomposed into simpler constituents using chemical reactions.Example: 
and
Compound is a pure substance which is made from atoms of different elements combined together in a fixed ratio by mass.It can be decomposed into simpler constituents using chemical reactions. Example:
Heterogeneous Mixture : Mixture that has its different components mixed unevenly within the substance
. Example: Air
Homogeneous Mixture : Mixture that has its different components mixed evenly within the substance. Example: sugar dissolved in water
If we are talking about moles then the answer to that is 0.22
Answer:
The correct answer is D Vaporizing a substance.
When a metal undergoes a reaction, especially with a nonmetal, you should look for the formation of salts or the formation of precipitates in the case the product is not soluble to water. Metals loses electrons to form positive ions which then reacts to nonmetals that are negatively charged ions.<span />
