Answer:
M = 64.1 g/mol
Explanation:
Given data:
Density of gas = 2.18 g/L
Temperature = 67 °C
Pressure = 720 mmHg
Molar mass =?
Solution:
We will convert the mmHg to atm.
720/ 760 = 0.95 atm
Temperature from °C to K.
67 + 273 = 340 K
Formula:
PM = dRT
M = dRT / P
M = 2.18 g/L ×0.0821 atm. L . mol⁻¹ . K¹ × 340 k / 0.95 atm
M = 60.9 atm. g/mol /0.95 atm
M = 64.1 g/mol
The observers which would experience the same apparent solar time are observer B and observer E. This means the correct response as per the full question indicated in the attached document is number 2.
<h3>Types of Solar Time</h3>
There are two types of Solar Time. They are:
- Apparent Solar Time and
- Mean Solar Time
<h3>
What is Apparent Solar Time?</h3>
Apparent solar time refers to the time of the day that is shown by the hour angle of the sun. It is also defined as the sun's position in the sky going by direct observation. Direction observation of the sun to determine Solar Time is possible using a Sundial.
See the link below for more about Apparent Solar Time:
brainly.com/question/6336054
Answer:
pH at the equivalence point for titration of HF and HCl will be basic and neutral respectively.
Explanation:
pH at equivalence point depends on hydrolysis equilibrium of conjugated base present in mixture.
Neutralization reaction: ![HF+OH^{-}\rightleftharpoons F^{-}+H_{2}O](https://tex.z-dn.net/?f=HF%2BOH%5E%7B-%7D%5Crightleftharpoons%20F%5E%7B-%7D%2BH_%7B2%7DO)
Hence, at equilibrium,
is present in mixture.
Hydrolysis reaction: ![F^{-}+H_{2}O\rightleftharpoons HF+OH^{-}](https://tex.z-dn.net/?f=F%5E%7B-%7D%2BH_%7B2%7DO%5Crightleftharpoons%20HF%2BOH%5E%7B-%7D)
Here HF is an weak acid and
is a strong base, So, resultant pH of the solution will be basic.
Neutralization reaction: ![HCl+OH^{-}\rightleftharpoons Cl^{-}+H_{2}O](https://tex.z-dn.net/?f=HCl%2BOH%5E%7B-%7D%5Crightleftharpoons%20Cl%5E%7B-%7D%2BH_%7B2%7DO)
Hence, at equilibrium,
is present in mixture.
Hydrolysis reaction: ![Cl^{-}+H_{2}O\rightleftharpoons HCl+OH^{-}](https://tex.z-dn.net/?f=Cl%5E%7B-%7D%2BH_%7B2%7DO%5Crightleftharpoons%20HCl%2BOH%5E%7B-%7D)
Here HCl is a strong acid and
is a strong base, So, resultant pH of the solution will be neutral.
Answer:
1.5 moles of Fe produced.
Explanation:
Given data:
Moles of FeO react = 1.50 mol
Moles of iron produced = ?
Solution:
Chemical equation:
FeO + CO → Fe + CO₂
Now we will compare the moles of ironoxide with iron.
FeO : Fe
1 : 1
1.5 : 1.5
Thus from 1.5 moles of FeO 1.5 moles of Fe are produced.
D) reacts with oxygen
All other are physical properties.