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- solution is a homogeneous mixture. Can you give an example of a gaseous homogeneous mixture? A liquid homogeneous mixture? A solid homogeneous mixture?At what temperature does water freeze in kelvin? 100 K O 273 K O OKDirections Through the given situations below, answer the following questions 1 A mixture of monosodium glutamate, white sugar, salt and benzoic acid is to be melted by a group of Grade 7 students to determine the behavior of the mother during melting Predict how the mixture will look like as it is being heated. Explain your answer SUBSTANCE Sali White sugar Monosodium glutamate Benzoic acid MELTING POINT 801 C 186 C 232 C 122 C 2. Theo wants to observe what will happen to substance X (melting point is at 78 C) after heating it on an evaporating dish. After heating for a few minutes, substance X starts
- What is happening to the water molecules at segment F? C A D El G B F Time Freezing, the water molecules are gaining energy to become a solid. Melting, the water molecules are gaining energy to become a liquid. Freezing, the molecules are losing energy to become a solid. Melting, the water molecules are losing energy to become a liquid. TemperatureBalance each chemical equation. NH2OH(g)→NH3(g)+N2(g)+H2O(g) Express your answer as a chemical equation. Identify all of the phases in your answer.X 26. In the question above, two liquids react together to form solid. What term is given to this process? Precipitation Effervescence O Clumping Freezing
- Use numbers to order the substances by increasing boiling point. Let #1 be the substance with the LOWEST boiling point and #3 be the substance with the HIGHEST boiling point. Hydrogen Sulfide, H2S Methane, CH4 Carbon Dioxide, CO2 o=c=ö H.5. Calculate the amount of energy given off when 13g of water at 51° C freezes to ice at 0°C. Did a phase change occur? If so, which one? Is this endothermic or exothermic?Which is NOT directly attributable to a property of water? O The top of a lake freezing C Nutrients can dissolve and chemical reactions can occur O A small insect's ability to walk on water O The low boiling point of water
- Sarin is a nerve gas that was previously used as a chemical weapon. Considering the physical properties of sarin shown in the table, which statement about sarin is FALSE? Melting point Bolling point -56°C 158°C O A sample of sarin at 0°C exists as a liquid. O A sample of sarin at room temperature (22°C) exists as a liquid. O A sample of sarin at -100°C exists as a solid. O A sample of sarin at 100°C exists as a gas. O A sample of sarin at 170°C exists as a gas.Pure benzophenone melts at 48.1 C. Your sample of benzophenone began to freeze at 47 C. When you repeated this measurement, the sample again began to freeze at 47 C. Give at least two reasonable explanations for this observation. You tried to read the thermometer when your solution containing the unknown began to freeze but were not certain if the reading was 43.5 C or 44 C so you decided to repeat this by melting the solidifying mass. The new reading you observed was clearly 41 C. What happened? Clearly explain your reasoning.Consider equal volumes (say 1 L) of a given substance in the solid, liquid, and gas phases. Arrange them in order of decreasing mass based on the trend for the average substance. If the mass difference between samples is relatively small (10% or less), rank the items as equivalent. Rank from greatest to least mass. To rank items as equivalent, overlap them. • View Available Hint(s) Reset Help 1 L of substance in the solid phase 1L of substance in the gas phase 1L of substance in the liquid phase Greatest mass Least mass