Answer:
Based on compounds given, NO reaction occurs
Explanation
The compounds should exchange ions to generate a driving force that pulls the reaction to completion. => Example ...
The Molecular Equation is ...
NH₄Cl(aq) + AgNO₃(aq) => NH₄NO₃(aq) + AgCl(s)
Silver chloride forms in this reaction as a solid precipitate because of its low solubility and is the 'Driving Force' of the reaction. Driving Force is a more stable compound than any on the reactant side and when formed leaves the reaction system as a solid ppt, liquid weak electrolyte (i.e., weak acid or weak base) or a gas decomposition product of a weak electrolyte.
The Ionic Equation is ...
NH₄⁺(aq) + Cl⁻(aq) + Ag⁺(aq) + NO₃⁻(aq) => NH₄⁺(aq) + NO₃⁻(aq) + AgCl(s)
This shows all ions from reaction plus the Driving Force of the reaction.
The Net Ionic Equation is ...
Ag⁺(aq) + Cl⁻(aq) => AgCl(s)
The Net Ionic Equation shows only those ions undergoing reaction. The NH₄⁺ and NO₃⁻ ions are 'Spectator Ions' and do not react.
Attached is a reference sheet for determining the Driving Force of a Metathesis Double Replacement Reaction. Suggest reviewing acid-base theories and the products of decomposition type reactions.
Answer:
C₃H₆O₃
Explanation:
Data:
EF = CH₂O
MM = 90. g/mol
Calculations:
EF Mass = (12.01 + 2.016 + 16.00) u = 30.03 u
The molecular formula is an integral multiple of the empirical formula.
MF = (EF)ₙ
![n = \dfrac{\text{MF Mass}}{\text{EF Mass }} = \dfrac{\text{90. u}}{\text{30.03 u}} = 3.00 \approx 3](https://tex.z-dn.net/?f=n%20%3D%20%5Cdfrac%7B%5Ctext%7BMF%20Mass%7D%7D%7B%5Ctext%7BEF%20Mass%20%7D%7D%20%3D%20%5Cdfrac%7B%5Ctext%7B90.%20u%7D%7D%7B%5Ctext%7B30.03%20u%7D%7D%20%3D%203.00%20%20%5Capprox%203)
MF = (CH₂O)₃ = C₃H₆O₃
Answer:
22.656 grams of oxygen gas are there in a 2.3L tank at 7.5 atm and 24° C
Explanation:
An ideal gas is characterized by three state variables: absolute pressure (P), volume (V), and absolute temperature (T). The relationship between them constitutes the ideal gas law:
P * V = n * R * T
where R is the molar constant of the gases and n the number of moles.
In this case you know:
- R= 0.082
![\frac{atm*L}{mol*K}](https://tex.z-dn.net/?f=%5Cfrac%7Batm%2AL%7D%7Bmol%2AK%7D)
- T= 24 °C= 297 °K (being 0°C=273°K)
Replacing:
![7.5 atm* 2.3 L=n*0.082 \frac{atm*L}{mol*K} *297K](https://tex.z-dn.net/?f=7.5%20atm%2A%202.3%20L%3Dn%2A0.082%20%5Cfrac%7Batm%2AL%7D%7Bmol%2AK%7D%20%2A297K)
Solving:
![n=\frac{7.5 atm* 2.3 L}{0.082 \frac{atm*L}{mol*K} *297K}](https://tex.z-dn.net/?f=n%3D%5Cfrac%7B7.5%20atm%2A%202.3%20L%7D%7B0.082%20%5Cfrac%7Batm%2AL%7D%7Bmol%2AK%7D%20%2A297K%7D)
n=0.708 moles
Knowing that oxygen gas is a diatomic gas of molecular form O₂ and its mass is 32 g / mole, you can apply the following rule of three: if 1 mole contains 32 grams, 0.708 moles, how much mass will it have?
![mass=\frac{0.708 moles*32 grams}{1mole}](https://tex.z-dn.net/?f=mass%3D%5Cfrac%7B0.708%20moles%2A32%20grams%7D%7B1mole%7D)
mass= 22.656 grams
<u><em>22.656 grams of oxygen gas are there in a 2.3L tank at 7.5 atm and 24° C</em></u>
2nd option
Heat could transfer from object A to B
The reason : higher kinetic energy means the particles in A are moving /vibrating faster. This is a reason due to hight temperature.
Explanation:
Formula to calculate work done by motor is as follows.
Work done by motor =
where, g = gravitational constant = 10
Therefore, work done by motor is as follows.
Work done by motor =
= 100.0 J
Now, heat lost by water will be calculated as follows.
q =
=
= 10.0 J
Hence, heat gained by motor = heat lost by water
As, heat gained by motor = 10.0 J
So, change in energy = heat gained - work done
Therefore, change in energy will be calculated as follows.
Change in energy = heat gained - work done
= (10.0 J) - (100.0 J)
= -90.0 J
Thus, we can conclude that change in the energy of the battery contents is -90.0 J.