Which list of solutions is arranged in order from highest boiling point to lowest boiling point?
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In determining the boiling point of solutions, always take note of the number of ions that will dissociate in the solution. It does not depend on the nature of the substance. The greater the number of ions dissociated, the greater is the boiling point of the solution.
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Two fractions that are equivalent to 90/100
On a hot summer day Lam walked home from his grandmothers with a chocolate bar in his pocket. When he arrived home the chocolate bar had melted in his pocket, which statement BEST explains why thechocolate bar melted?A Heat transferred from the chocolate bar to his pocket.B. Heat evaporated from his pocket to his chocolate bar.c. Heat condensed from his leg to his chocolate bar in his pocket.D. Heat transferred from the environment to the chocolate bar in his pocket.
What types of epithelial cells would you expect to find in an area of the body where diffusion of nutrients needs to occur?1) Cuboidal 2) Columnar3) Squamous
7. (1 point) Colligative properties are directly related to the ____. *freezing point of a solutenature of the solutenature of the solventnumber of solute particles in a solution8. (1 point) What is the formula for sulfuric acid? *H₃SO₄H₃SO₃H₂SO₄H₂SO₃9. (1 point) Which of the following is an Arrhenius base? *CH₃COOHHSO₄⁻LiOHNH₄⁺10. (1 point) A Lewis base is a substance that can ____. *accept a pair of electronsaccept a hydrogen iondonate a hydrogen iondonate a pair of electrons11. (1 point) Which compound is amphoteric and can act as both a Brønsted-Lowry acid and a Brønsted-Lowry base? *ammoniahydrochloric acidsodium hydroxidewater12. (1 point) What are the bases in the following equilibrium reaction? CN⁻ + H₂O ⇄ HCN + OH⁻ *CN⁻ , H₂OCN⁻, OH⁻H₂O, HCNH₂O, OH⁻13. (1 point) The products of the self-ionization of water are _______. *H₃O⁺ and H₂OOH⁻ and OH⁺OH⁺ and H⁻OH⁻ and H⁺14. (1 point) What type of solution is one with a pH of 10? *acidicbasicneutralThe type varies depending on the solution.15. (1 point) The base dissociation constant is only found for ________. *Concentrated basesDilute basesStrong basesWeak Bases16. (1 point) A 18M solution of an acid that ionizes only slightly in solution would be termed_________. *concentrated and weakstrong and dilutedilute and weakconcentrated and strongShort Answer / Essay QuestionsPlease answer the following with complete sentences If there is math involved please show all of your work -The work is worth at least 1 point.17. (3 points) If the solubility of a gas is 5.6 g/L at 505 kPa pressure, what is the solubility of the gas when the pressure is 1010kPa? *18. (4 points) You have your choice of sucrose, C₁₂H₂₂O₁₁, sodium chloride, NaCl, or calcium chloride, CaCl₂ to use to melt the ice on the driveway. Explain why each choice will melt the ice, but also include which is the best choice and why. *19. (3 points) Calculate the [H⁺] for the aqueous solution in which [OH⁻] is 1 x10⁻⁹. Is this solution acidic, basic or neutral? Show your work *20. (3 points) What is an acid dissociation constant? When can it not be calculated and why? *21. (4 points total) Classify each solution as either an acid or a base using the properties that are stated. What are two ways these solutions are similar? Solution A – has a bitter taste and feels slippery Solution B – has a sour taste and feels sticky.
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Petroleum and coal can be mined from the continental shelf. Hot magma from inside the Earth seeps out from the crevices in the mid-ocean ridge. There is speculation regarding whether this is a cost-effective technique. Fossil fuels and mineral deposits can be located all throughout the continental shelf and also in some of the deepest depths of the ocean.
Answer:The given statement is true.
Explanation:
Continental Shelf: A portion of continent submerged under the relative shallow ocean water.Most of the gradually slopes down in to the water.
The relatively flat surface and shallow water makes it fitr place to harvest sea food, non renewable energy resources like : coal, petroleum .
b). horn corals
c). brachiopods
d). crinoids
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NO3- + 6 H2O + 8 e- -------> NH3 + 9 OH-
( Zn + 4 OH- ----> Zh(OH)4= + 2e-) x 4
7 OH- + NO3- + 4 Zn + 6 H2O -------> NH3 + 4 Zn(OH)4
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Answer: Boiling point
Explanation:
Boiling point is the temperature where the vapor pressure of a liquid equals the pressure of the gas present above it.
The normal boiling point of a liquid is the temperature at which its vapor pressure is equal to one atmosphere.
Boiling point depends on the intermolecular forces present between the molecules. More are the intermolecular forces, lesser will be the vapor pressure and thus more heat will be supplied to make vapor pressure equal to the atmospheric pressure. Thus higher will be the boiling point.
Normal boiling point for water is .
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A catalyst never takes part in the reaction, so it does not affect the reaction.
Hope this helps~
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The solutes dissolves in solvent results in the formation of a solution.
Those mixtures in which the components of mixture are uniformly distributed throughout the mixture are said to be homogeneous.
Those mixtures in which the components of mixture are not uniformly distributed throughout the mixture are said to be heterogeneous.
Those solutions whose concentrations are accurately known are known as standard.
Hence, a mixture of uneven distribution and easy separation is heterogeneous.
Answer:
A heterogenous separation!
Explanation: