Q: hydrogen sulphide becomes a superconductor at 203 K. Determine what this temperature is on the…

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Q: 20. A diagram representing water molecules in the solid phase (ice) is shown below. Which of these…

A: * The change of state in matter is conversion of solid to liquid or gas . When the solid substance…

Q: The study of energy changes that accompany chemical and physical changes is known as? Select one: a.…

A: It is not definition of physical chemistry because it is interactions and transformations of…

Q: A baby's spoon with a surface area of 6.25 cm² is plated with silver from AgNO3 using a current 2 A…

A: Given : Surface are of spoon = 6.25 cm2  Current = 2 A And time = 2 hr 25 min = 145 mins…

Q: A cube of sugar (p = 0.85 mg/ml) is dropped in a glass of tea at a rate of 0.02 L/sec. it take about…

A: Given : Density of sugar = 0.85 mg/mL Rate of addition of sugar = 0.02 L/sec And time = 5 s

Q: Mercy is experiencing a fever. Upon taking her temperature, it was found out the she has a…

A: Hence 3rd option is correct that is 1.43

Q: The temperature of the water boils at 100 degrees Celsius and while cooling, the temperature of the…

A: Given : time required for 10 oC drop in temperature = 20 mins Boiling point of water = 100 oC To…

Q: The specific heat capacity of liquid mercury is 0.14 J/g-k. How many joules of heat are needed to…

A: Given: The specific heat of Hg = 0.14 J/g-K or J/g-0C The initial temperature, (T1) =22.1 0C. The…

Q: Food safety guidelines recommend that a beef ribs roast (bone-in) should cook for 23.0 minutes per…

A: The recommended cooking time per pound of beef ribs has been provided as follows: Time=23.0 min/lb…

Q: law of conservation

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Q: 200 Heating steam 150 Vaporizing water 100 Heating liquid water Melting ice Heating ice 25 50 75 100…

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Q: 6. Gases can be compressed because: A. gases do not contain molecules B. molecules of gas can be…

A: 6 There are 3 state of matter  Solid liquid and gas Solid In solid the atoms are closely  packed so…

Q: It includes characteristics of the land surface, such as topography, the slope, and its aspect. A…

A: Topography, slope, elevation, and it's aspects of land surface are studied in relief.

Q: Chemical or physical a) Plants are the color green       b) Iron turns orangeupon exposure to…

A: Physical change is that change in which no new substance is formed rather original substances…

Q: Food safety guidelines recommend that a beef rib roast (bone-in) should cook for 23.0 minutes per…

A: beef rib roast (bone-in) should cook for 23.0 minutes per pound based on a 325 °F oven setting…

Q: Which of the following statement is true?    A. laws are shorter theories  B. theories have not…

A: We are to discuss which of given options about scientific theories and laws is correct.

Q: Food safety guidelines recommends that a beef rib roast should cook for 23.0 minutes per pound based…

A: Given: Time taken to cook 1 pound of beef rib roast=23.0 minutes. The time taken to cook  5.17…

Q: A student observed a sample of water in three states of matter. The student should describe the…

A: Three state of matters are solid, liquid and gas. Solids have very strong intermolecular attraction…

Q: 24. The graph to the right represents the uniform cooling of a substance, starting with the…

A: When we cool the gas, it converts into a liquid state. On further cooling the liquid converts into…

Q: Find the difference between the value of x2 and the sum of x1 plus x3.; let x4 be equivalent to the…

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Q: Find the boiling point of tungsten in degrees Fahrenheit. (Tungsten, also known as wolfram, has the…

A: Tungsten is a transition metal with atomic number equals to 74. The chemical symbol used to donate…

Q: A sheet of gold metal that has a mass of 100.0g and has a temperature of 18.0 degrees C is placed…

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Q: 8. Mars is known as the "Red Planet" because of the red color of its soil. The red soil is rich in…

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Q: The thermostat shows that the room temperature is 21.7°C. Convert 21.7°C to Kelvin and Fahrenheit…

A: Given, T = 21.7 degree celsius

Q: A volatile liquid (one that evaporates quickly) was put into a jar and sealed. The temperature of…

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Q: 1. A cup of water containing an ice cube at 0°C is filled exactly to the brim (so that a single…

A: To answer this question , we will consider the fact about density of liquid water and ice.

Q: Describes how tempera

A: Different fundamental gas laws are there that tells the relationship between the pressure,…

Q: A 15 g g piece of iron (C = 0.444 J/(g·°C)) is heated to a temperature of 100°C and placed into a…

A: Given mass of iron is 15 g,heat capacity of iron is 0.444 J/(g.°C) and initial temperature of iron…

Q: a new temperature scale ("N), water boils at 180.0°N and freezes at 60.0°N. Calculate the normal…

A: Hello. Since more than one question has been posted, the first question shall be only solved in this…

Q: Which statement is true about the particles of a solid when the solid changes into a liquid? A.…

A: Matter is anything which occupy space and have mass. Physically their are three states of matter…

Q: b. melting of ice c. boiling of water d. all of these e. none of these

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Q: This graph represents the density of water. Sketch and label a line representing: A- a metal B-…

A: The density is defined as the ratio of mass per unit volume. density = massvolume d = mv

Q: (b) Manuel is driving at a constant speed. He then slows down to pass an accident. After passing it,…

A: Option C. Is correct.  As per statement, Manuel is driving at constant speed. He slows speed to pass…

Q: An object with initial temperature 50°C is brought into a 22°C room. At noon the object's…

A: When an object of different temperature is brought in contact with other object at different…

Q: Using this chart : Time (seconds) [PHT] ln[PHT] 1/[PHT] 0 0.005000 -5.298 200.0 10.5 0.004500…

A: A question based on chemical kinetics, which is to be accomplished.

Q: A 2.5 kg sample of copper at 24.1 degrees C experiences a change in temperature to 19.7 degrees C.…

A: The given problem can be solved by using the formula given below as; q = m C ∆T…

Q: 3. (a) Estimate the fractional change in the volume of Earth's oceans due to an average temperature…

A: Solution -

Q: Use the simulator to determine the temperature change of 80 grams of water initially at 20 °C…

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Q: What is occurring in section C? B C temperature (°C) forening D BONG Cat time (minutes) OA.…

A: We are given a Temperature(oC) versus Time(min) graph for the conversion of an unknown material from…

Q: f you put salt water in an open container under the sun, the water evaporates leaving the salt…

A: ANSWERE IS DISCUSSED BELOW :

Q: Physical changes may be reversed by changing the temperature. Select one: O True O False

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Q: A container of hot liquid is placed in a freezer that is kept at a constant temperature, 20 °F. The…

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Q: Use the data in the table to plot a heating curve of temperature versus time for a 180-g sample of…

A: Heating curve is a graphical representation of changes that occur in the physical state of a…

Q: A pipe leaks water at a rate of 1.24 mL/s. What is the rate of the water leak in L/hr?

A: Given, rate of water leak = 1.24 mL/s We need to convert the unit of water leak from mL/s to L/hr.

Q: The temperature of a steel ball is measured to be -12 °F. Convert this temperature to K (Kelvin).

A: The relationship between temperature in °F and Kelvin is given by  (T in °F − 32) + 273.15 X 1.8 = T…

Q: 2. A temperature of 310'k is the same as: b) 94'F., a) 67'F c) 98.6'F. d) -97 F. e) 95'F.

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Q: Earth's oceans have an average depth

A: An ocean is a huge body of saltwater that covers 71 percent of surface of earth.