Answer:
Conversion factor;
Molar mass;
Avogadro's constant and molar mass
Explanation:
- Firstly, an intermediate step is to define the conversion factor that will be then used in a conversion technique called dimensional analysis in order to convert from one unit to another. An example of a conversion factor would be, for example, 1 L = 1000 mL, which can be manipulated as a fraction, either
or 
; - Secondly, in order to convert mass to moles, we need to know the molar mass of a compound which has a units of g/mol (that is, it shows how many grams we have per 1 mole of substance.
- Thirdly, Avogadro's constant,
tells us that there is 
number of molecules or atoms in 1 mole of substance. We need two conversion factors to convert the number of molecules to a mass: firstly, we need to convert the number of molecules into the number of moles using Avogadro's constant and then we need to use the molar mass to convert the moles obtained into mass.
Mass of Li: 6.94 g Li
Conversion relationship: 1 mole Li=6.94 g Li
100.0 g Li 1 mole Li
---------- x ---------- = 14.4 moles Li
1 6.94 g Li
Conversion relationship: 1 mole Li=6.02x10^23 atoms Li
14.4 moles Li 6.02x10^23 atoms Li
-------------- x ----------------------- = 8.67x10^24 atoms Li
1 1 mole Li
Molarity is the number of moles of solute in one liter of solution whereas molality is the number of moles of solute present in 1 kilo gram of solution.
Molarity is denoted by M and molality denoted by m
Mass of solution
Density of solution = 1.1 g /mL
d = 1.1 = (W_B + W_A) /V
V = 910.11 mL
molarity of solution is:
= 0.0433 /0.910 = 0.0474 M
Thus, moalrity of solution is 0.0474 M
Answer: 2.0 moles of oxygen are needed to completely react with 1.0 mole of CH4 as shown in the balanced equation.
Explanation:
Stoichiometry is a fundamental tool and skill to determine the relative quantities that the chemicals react with. it determines the quantity of one substance to a quantity of another substance or substances. Stoichiometry is relating of one chemical substance to another using a balanced chemical reaction is called stoichiometry. Also, it is very important to predict what will occur and how much is produced through knowing the coefficients of moles of reactants and products.
Mole s defined as the mass of the substance divided by its molar mass.
As shown from the balanced equation every mole of methane(CH4) needs to react with 2.0 moles of oxygen(O2) to produce 1.0 mole of carbon dioxide(CO2) and 2.0 moles of hydrogen peroxide(H2O2).
C) Metallic hope this is correct
