The melting point of chloroethane, CH3CH2CL is -136 Celsius and its boiling point is 12 celsius. Is chloroethane a gas, liquid, or solid at STP?

Q: How many calories are released when 58.4 g of steam at 144°C is cooled to -37.6°C?

A: Given: Mass of steam = 58.4 g Initial temperature = 144oC Final temperature = -37.6oC Specific heat…

Q: Ethanol melts at -144°C and boils at 78°C at a constant pressure of 1atm. What state of matter must…

A: The boiling point of a substance is the temperature at which the vapor pressure of the liquid equals…

Q: 9. What is the new temperature when 10L at 5 K is compressed to 4.00 L? O 2K 0.5 K 25 K 20 K

A: PV = nRT  At constant pressure and number of moles,  V = K • T  Initial, V1 = K • T1  Final, V2 = K…

Q: A sample of SO2 gas has a volume of 5.2 liters at 24 degrees Celsius. It is heated at constant…

A: From ideal gas equation,  P V = n R T V / T = n R / P  = constant ( at constant pressure and same…

Q: b. calories to freeze c. kilocalories to melt 140 g of ice. 8. Draw a cooling curve for a sample of…

A:

Q: A sample of solid graphite is heated with an electrical coil. If 107 Joules of energy are added to a…

A: We have given that  Mass of graphite = 13.7g  Energy added i.e. heat = Q = 107J Initial temperature…

Q: 5) The specific heat of water is: A. 5 Cal per g per C B. 2 Cal per g per C C. 3 Cal per g per C D.…

A: Introduction: The heat capacity of a matter is the quantity of heat required to increase the…

Q: Considering change of state descriptions, what is the name of the change of the state for an…

A: Endothermic reaction:- 'Endo' means input of heat requires, that is any reaction (whether a chemical…

Q: In the  attached figure, liquid water is vaporizing into steam.

A: Water is a molecule comprising hydrogen and oxygen. The molecular formula of water is H2O. It has a…

Q: Helium gas in a 2.00 L cylinder is under 1.12 atm pressure. At 36.50C, that same gas sample has a…

A: At a constant volume of the gaseous system, the pressure of the gas has a direct relationship with…

Q: Q6. Calculate the amount of heat (kcal) released when 50.0 g of steam at 100°C hits the skin and…

A:

Q: II 15 b. (0.00763 x 10-28) (5.070 x 10-23) (0.0033 x 1013) C. (8.10 x 10-32)-1/2 = d. (0.08 liter…

A: b.

Q: Which of the following samples has the higher temperature? a. 100. g of liquid water at 16.0 °C that…

A: Introduction: Specific heat: The amount of heat required to raise the temperature of a 1 gram of a…

Q: Which phase change is an endothermic process? a) evaporation O b) deposition Oc) freezing

A: The energy difference between the products and reactants is known as the energy change of a…

Q: Students were conducting an experiment. Each student had a test tube filled with 25.0 mL of a clear…

A: Answer :-  (C) Test tube A, because it took a longer time to reach the bottom of test tube.…

Q: A 10.7-g silicon block, initially at 125.0 °C, is dropped into a Thermos flask containing 39.0 g of…

A:

Q: Liquid A Liquid B 1. The object must be denser than liquid A. 2. The density of the object must be…

A: Interpretation: The comparison between liquid A and liquid B are to be provided.

Q: You have a flask of a certain liquid gas at a temperature of -189°C. You then heat the gas until its…

A: Given that, Initial temperature = -189 °C  Final temperature = ?

Q: Specific Heats of Substances cal Substance Specific Heat Brick 0.20 Ethanol 0.58 Wood 0.10 Calculate…

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Q: How many joules of energy are needed to change 65.00 g of water from -38.0°C to steam at 115.0°C?

A: Given that : Mass of water (m) = 65 g Initial temperature = -38.0°C Final temperature = 115.0°C The…

Q: Below is a diagram showing a typical heating/cooling curve for water. It reveals a wealth of…

A: We would use the given heating curve to answer these questions.      Note : As you have uploaded…

Q: A mixture of carbon dioxide and hydrogen gases at a total pressure of 798 mm Hg contains carbon…

A: In a mixture of gases, the mole fraction of one of the gases, let's say carbon dioxide is given as:…

Q: X Particulate Electrical Forces Unit Test - Profile 1- Microsoft Edge O…

A: Boiling point determined by the team was37.0±0.5°C and the accepted value is 37.4°C

Q: What is the relationship between the object density, the liquid density, and the tendency of the…

A: If,  density of object > density of liquid Then object will sink in water.

Q: The heat of fusion for water is 80. Cal/g. How many calories of heat are released when 20.0 g of…

A: Given: Mass of water = 20 g The heat of fusion for water = 80 cal/g

Q: 11. Which state of matter is most accurately described by the kinetic molecular theory? gas aqueous…

A: Kinetic molecular theory states that gas particle are in constant motion and exhibit perfectly…

Q: How much energy is released when a 50g sample of gaseous ethanol is cooled from 78.4 degrees celsius…

A:

Q: How many calories are given off by 5 grams of 100 deg C steam that changes phase to 5 g of ice at 0…

A:

Q: 2. Gases are capable of being greatly compressed.   Group of answer choices True False     3.All…

A: Collision theory is used to predict the rate of reaction for gases.  It is based on the assumption…

Q: A 25.0 g sample of molten iron releases 1230 cal as it cools from 2000 °C to its freezing point,…

A: Iron at 20000C is in its molten state.

Q: Consider the following water and planetary data: Earth surface temperature: 20.0°C Mars surface…

A: Given: The surface pressure of mars and earth is 0.011 atm and 1.0 atm, respectively. The enthalpy…

Q: 17. The figure below shows how the temperature of a substance changed as it was heated. Which…

A: From temperature - time graph, it can be seen that for portion B of graph temperature change is nil…

Q: Butane (C,H,) is an easily compressible gas used in ciga- rette lighters. It has a melting point of…

A: From the given data we have Butane is used as a gas in cigarette lighters. Let's see whether it…

Q: Calculate the number of calories absorbed when 110 g of ice at -10 degrees Celsius is changed to…

A: Concept introduction: The latent heat of fusion and specific heat capacity are used to calculate the…

Q: Use the values for the heat of fusion, specific heat of water, and the heat of vaporization to…

A: 1. When steam condenses and cools to liquid, two steps occur: 1) Conversion of steam to liquid at…

Q: Draw a cooling curve for a sample of steam that cools from 110 °C to -10 °C. Indicate the segment of…

A: Cooling curve The plot that represents temperature versus cooling time is called cooling curve.

Q: O Temperature 273 K and 760 mm Hg O Temperature 13.3 psi and 1 Torr O Temperature 273 K and 1 atm…

A: STP means standard temperature and pressure

Q: The amount of heat needed to raise 50.0 grams of water from 20.0 degree Celsius to 30 degree Celsius…

A: Given : mass = 50 grams Temperature T2 = 30oC Temperature T1 = 20oC ∆T=T2-T1         = 30 - 20…

Q: 34 - Under what conditions does N2 gas come closest to ideality?    a) High pressure and high…

A: in this question given that,  under the condiction does N2 grass comes close to ideally,

Q: What is the boiling point of the unknown substance Xin K(Kelvin)? X(e) = X(g) AH;°(kJ mol-1) S°(J…

A: In this problem, we are required to calculate the boiling point of liquid X given that the enthalpy…

Q: How many calories could be needed to melt 10 grams of ice at 0 c

A: Heat is required to convert ice at zero degree Celsius to water at zero degree Celsius.hence only…

Q: How many Joules of energy are needed to increase 250.0 g of water from 22.8C to 37.9C? a) 3780  b)…

A: Q = MS∆T  here, Q = energy needed  M = mass of water  S = specific heat  ∆T = temperature gradient

Q: Acetaldehyde, CH3 CHO, is a colorless, flammable liquid used in the manufacture of acetic acid,…

A: The given data is as follows: CH3CHO(l)  →  CH3CHO(g)       ∆H°=? ∆Hf°(CH3CHO(l) )=-191.8…

Q: The temperature of 328.6 mL of Ne is changed from 274.49°C to 14.27K. What is the new volume of the…

A: Given,V1=328.6mL           T1=274.49°C+273.15=547.64KV2=?                         T2=14.27KWe have…

Q: Which state of matter takes the shape of its container and is compressible?

A: There are three states of matter: solid: solid has a definite shape and having a definite volume,…

Q: Which of the following is the best way to increase the rate at which a liquid will become a gas…

A: Generally the interactions between the molecules and its volumes are plays very important role in…

Q: How many grams of water can be heated from 20.0 °C to 75.0 °C using 12500.0 Joules? s = 4.184 J/g °C

A: Given data: The initial temperature of the water is Ti=20.0 °C. The final temperature of the water…

Matter and Measurement

In the universe, there is matter, energy, and void space. The universe contains energy and void space. The definition of matter can be considered as something which possesses mass and consumes space. Chemistry is that branch of science which deals with the study of matter. Under chemistry, nature, composition, and the changes occurring to matter are discussed.