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(a)
Interpretation:
Whether the given statement is true or false needs to be determined.
In the phase diagram for a pure substance, triple point is temperature and pressure value at which the substance can boil, freeze and sublime simultaneously
Concept introduction:
Triple point is that point on the phase diagram at which all the three phases, liquid, solid and vapor, are in equilibrium with each other.
(b)
Interpretation:
Whether the given statement is true or false needs to be determined.
The boiling point of CHF3 is more than CHCl3 due to hydrogen bonding in CHCl3.
Concept introduction:
Hydrogen bond is a strong type of dipole force which act between hydrogen atoms bonded to comparatively highly electronegative atoms specially fluorine, oxygen or nitrogen atom in a molecule and an unshared pair on such atoms of the neighboring molecule. There are two types of hydrogen bonding; intermolecular and intramolecular hydrogen bonding.
(c)
Interpretation:
Whether the given statement is true or false needs to be determined.
The melting and boiling point of a compound is independent of the strength of covalent bonds in it.
Concept introduction:
Covalent bonds are intermolecular bonds which are formed by sharing of electrons between two or more atoms. These can be formed by sharing of electron/s between same or different type of atoms.
(d)
Interpretation:
Whether the given statement is true or false needs to be determined.
The pressure deceases due to decreases in the amount of a condensable gas is reduced in a tank.
Concept introduction:
Here,
P- Pressure
V-Volume
T- Temperature
n- Number of moles
R- Universal gas constant
(e)
Interpretation:
Whether the given statement is true or false needs to be determined.
The temperature above which there is only gas phase is known as the critical temperature.
Concept introduction:
The critical temperature is the temperature below which any phase of a substance can be present but above it, there is no solid and liquid phase exist. Thus, only vapor phase of the substance is present at that point.
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Chapter 9 Solutions
Chemistry: Principles and Reactions
- Conservation of mass was discussed in the background. Describe how conservation of mass (actual, not theoretical) could be checked in the experiment performed.arrow_forwardWhat impact would adding twice as much Na2CO3 than required for stoichiometric quantities have on the quantity of product produced? Initial results attachedarrow_forwardGiven that a theoretical yield for isolating Calcium Carbonate in this experiment would be 100%. From that information and based on the results you obtained in this experiment, describe your success in the recovery of calcium carbonate and suggest two possible sources of error that would have caused you to not obtain 100% yield. Results are attached form experimentarrow_forward
- 5) Calculate the flux of oxygen between the ocean and the atmosphere(2 pts), given that: (from Box 5.1, pg. 88 of your text): Temp = 18°C Salinity = 35 ppt Density = 1025 kg/m3 Oxygen concentration measured in bulk water = 263.84 mmol/m3 Wind speed = 7.4 m/s Oxygen is observed to be about 10% initially supersaturated What is flux if the temperature is 10°C ? (2 pts) (Hint: use the same density in your calculations). Why do your calculated values make sense (or not) based on what you know about the relationship between gas solubility and temperature (1 pt)?arrow_forwardFind a molecular formula for these unknownsarrow_forward(ME EX2) Prblms 8-11 Can you please explain problems 8 -11 to me in detail, step by step? Thank you so much! If needed color code them for me.arrow_forward
- Don't used hand raitingarrow_forwardThe following 'H NMR spectrum was taken with a 750 MHz spectrometer: 1.0 0.5 0.0 10.0 9.0 8.0 7.0 6.0 5.0 4.0 3.0 ' 2.0 1.0 0.0 (ppm) What is the difference Av in the frequency of RF ac Δν ac radiation absorbed by the a and c protons? (Note: it's not equal to the difference in chemical shifts.) Round your answer to 2 significant digits, and be sure it has an appropriate unit symbol. = O O a will shift left, c will shift right. O a will shift right, c will shift left. a and c will both shift left, with more space between them. Suppose a new spectrum is taken with a 500 MHz spectrometer. What will be true about this new spectrum? O a and c will both shift left, with less space between them. O a and c will both shift right, with more space between them. O a and c will both shift right, with less space between them. Which protons have the largest energy gap between spin up and spin down states? O None of the above. ○ a Ob Explanation Check C Ar B 2025 McGraw Hill LLC. All Rights Reserved.…arrow_forwardWhat mass of Na2CO3 must you add to 125g of water to prepare 0.200 m Na2CO3? Calculate mole fraction of Na2CO3, mass percent, and molarity of the resulting solution. MM (g/mol): Na2CO3 105.99; water 18.02. Final solution density is 1.04 g/mL.arrow_forward
- Chemistry: The Molecular ScienceChemistryISBN:9781285199047Author:John W. Moore, Conrad L. StanitskiPublisher:Cengage LearningIntroductory Chemistry: A FoundationChemistryISBN:9781337399425Author:Steven S. Zumdahl, Donald J. DeCostePublisher:Cengage Learning
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