Which of the following is true of solids?a. All solids have equal melting points.
b. Ionic solids have higher melting points than molecular solids.
c. Molecular solids have higher melting points than all other types of solids.
d. It is impossible for solids to melt; therefore solids do not have melting points.

The IUPAC name for the compound ZnO is zinc oxide.

The International Union of Pure and Applied Chemistry (IUPAC) is responsible for standardizing the naming of chemical compounds to ensure uniformity and clarity in chemical nomenclature. In the IUPAC system, chemical names are based on the elements present in the compound and their respective oxidation states.

In the compound ZnO, "Zn" represents the element zinc, and "O" represents the element oxygen. The oxidation state of zinc in this compound is +2, and the oxidation state of oxygen is -2. To form a neutral compound, one zinc ion (Zn²⁺) combines with one oxide ion (O²⁻) in a 1:1 ratio. Therefore, the IUPAC name for the compound ZnO is "zinc oxide."

Zinc oxide is a white powder that is commonly used in various applications, such as in the production of rubber, ceramics, and cosmetics. It is also used as a pigment in paints and as an additive in food products. The IUPAC naming system ensures that scientists and chemists worldwide can communicate effectively about chemical compounds and their properties.

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Final answer:

By utilizing stoichiometry, we can determine that the given volume and molarity of acetic acid (HC2H3O2) would produce approximately 3.65 grams of carbon dioxide (CO2). The calculation involves determining the moles of HC2H3O2 used, which equals the moles of CO2 produced, and converting that to grams using the molar mass of CO2.

Explanation:

The amount of carbon dioxide produced can be determined through stoichiometry, using the provided balanced chemical equation and molarity (M) of the acetic acid HC2H3O2. According to the balanced chemical equation, one mole of NaHCO3 reacts with one mole of HC2H3O2 to produce one mole of CO2. In other words, the moles of HC2H3O2 used equals the moles of CO2 produced.

First, calculate the moles of HC2H3O2 by multiplying the given volume (0.100 L) by its molarity (0.83 mol/L): 0.100L x 0.83 mol/L = 0.083 mol.

So, according to the stoichiometric ratio, 0.083 mol of HC2H3O2 would produce 0.083 mol of CO2. If you want your answer in grams, note that the molar mass of CO2 is approximately 44.01 g/mol. Multiply the moles of CO2 by its molar mass: 0.083 mol x 44.01 g/mol = 3.65g.

So, the amount of CO2 produced would be 3.65 grams.

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Answer:

Colligative properties depend on the quantity of solute and solvent and the identity of the solvent.

Explanation:

Colligative properties are defined as a set of intensive physical properties that result from the interactions between solute and solvent that form a solution. In this group of properties, we can find the freezing point depression, boiling point elevation, osmotic pressure, and vapor pressure lowering.

The mentioned properties dependon the amount of solute and solvent (concentration) and the nature of the solvent. this fact can be pictured by the freezing point depression formula:

where is the freezing point of the pure solvent, is the freezing point of the solution,is the freezing point depression constant  and m is the molality

In the equation, it can be seen that the change of temperature of the solution with respect to the pure solvent depends on the molality, which is the ratio of moles of solute and mass of solvent. Moreover, the change also depends on the freezing point depression constant that is a characteristic of the solvent.

Answer:

Option (A)

Explanation:

A dew point is usually defined as the specific temperature at which the air gets cooled in order to undergo complete saturation with water vapor. This refers to the condition when the relative humidity becomes 100%, and with progressive cooling, it results in the process of condensation, thereby giving rise to the formation of dew.

In a condition, where there is increasing air temperature and no addition of water vapor, the dew point will eventually remain the same. It is because there is not enough water vapor present in the air for the condensation process to take place and form dew.

Thus, the correct answer is option (A).

Final answer:

The dew point would remain the same when air temperature increases without any additional water vapor. The dew point is dependent on humidity and not on the air temperature. Hence, increase in air temperature with no extra water vapor will leave the dew point unchanged.

Explanation:

Dew Point and Air Temperature

The dew point is the temperature at which air becomes saturated with water vapor after cooling without changing its pressure or moisture content. It's significant in understanding weather and climate patterns. If the air temperature increases with no additional water vapor introduced to it, the dew point would remain the same.

This is because the dew point depends on the humidity or water vapor content of the air, not the air temperature. Thus, without the addition of more water vapor, the amount of water the air can hold at saturation stays the same, therefore the dew point remains the same.

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Answer:

9 duh

Explanation: