any kJ are required ti transform 20.0 g of ice at 0 degree C to water at 20 degr

Question

any kJ are required ti transform 20.0 g of ice at 0 degree C to water at 20 degree C? If needed, delta H_ for water = 6.0 kJ/mol, specific heat capacity for water = 4.2J/g.K 10.0 KJ 8.34 KJ 6.66 KJ 1.68 KJ 7.50 KJ Which of the following liquids will be immiscible with water: methanol (CH_3OH), carbon tetrachloride (CCl_4), benzene (C_6H_6), and/or formic acid (HCO_2H)? methanol and carbon tetrachloride benzene and formic acid carbon tetrachloride and benzene methanol, carbon tetrachloride, and benzene carbon tetrachloride, benzene, and formic acid Which of the following statements is INCORRECT? The solubility of a gas in water decreases with increasing temperature. The solubility of a gas in water is proportional to the partial pressure of the gas above the water. The dissolution of a gas in water is usually an exothermic process. The relationship between the solubility of a gas and its partial pressure is known as Henry's law. The solubility of a gas in water is inversely proportional to the molar mass of the gas. Ideally, colligative properties depend only on the concentration of solute particles in a solution. molar masses of the solute particles in a solution. density of a solution. hydrated radii of the molecules or ions dissolved in a solution. partial pressure of the gases above the surface of a solution. Which one of the following indicates the presence of strong intermolecular forces? a low boiling point a low heat of vaporization a high vapor pressure a very low critical point a high heat of fusion An atom located on a face of a unit cell is shared equally between ___ unit cells. 2 3 4 6 8 Which one of the following aqueous solutions will have highest boiling point? 0.125 m KNO_3 0.075 m AlCl_3 0.200 m glucose 0.300m NaCl 0.100 m K_3 P What is the distance, in atomic radii, along any edge of a face-centered unit cell? 4 times r/squareroot 3 2 times r 4 times r 2 squareroot 2 times r r nonpolar liquid (molar mass = 100g/mol). nonpolar liquid (molar mass = 200g/mol). polar liquid (molar mass = 100g/mol). polar liquid (molar mass = 200g/mol). ionic crystal (molar mass = 100g/mol)

Explanation / Answer

iii) Answer: (c)

Explanation:

Acids and alcohols can form H-bonds with the water. Hence these are soluble in water.

Carbon tetrachloride and Benzene are Nonpolar compounds and the water is the polar compounds. Due to these reasons Immiscible.

iv) Answer: (e)

Explanation:

solubility of the gas depends on the pressure of the gas.

v) Answer: (a)

Explanation:

Colligative properties depends on the number of particles. If the concentration is more, Then the particles also more.

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