Chlorine trifluoride (ClF3) melts at -76.3 °C and boils at 11.8 °C at a constant pressure of 1 atm. What state of matter must a sample of chlorine trifluoride be in at 20°C and 1 atm?

Q: What quantity of heat in kJ must be removed from a 35.0 g sample of water initially at 43.0 oC for…

A: Given : Mass of water = 35.0 g Initial temperature of water = 43.0 oC And final temperature of water…

Q: Hikers climbing Mount Everest discovered it took much longer to cook a boiled egg than it does at…

A: Answer: 80.93°C

Q: A 28.9-g sample of water at 290. K is mixed with 48.3 g water at 350. K. Calculate the final…

A: If we assume that no heat is lost to the surroundings, then you can say that the heat lost by the…

Q: A liquid is moved from a warm room to a refrigerator set to 2 degrees celcius, and its vapor…

A: The objective of this question is to find the initial temperature of the warm room before the liquid…

Q: Estimate the molar heat of vaporization (in kJ)of a liquid whose vapor pressure doubles when the…

A:

Q: What amount of heat (in kJ) is required to convert 15.8 g of an unknown solid (MM= 83.21 g/mol) at…

A: In the process of conversion, following steps will happen 1) Heating of solid from -5°C to 10.3 °C…

Q: Benzene has a boiling point of 80.1 °C, and a specific heat capacity of 1.8 J/g °C in the liquid…

A:

Q: How many joules of heat energy are required to heat 25.0 grams ethyl alcohol from prevailing room…

A: Given : Mass of ethyl alcohol = 25.0 g Initial temperature of ethyl alcohol = 22.5 oC Final…

Q: You place a plastic bottle containing 0.600 liters of water at 25.0°C in a freezer that uses CF₂Cl₂…

A: Given that: Volume of water at 25.0oC = 0.6 L = 600 mLHeat of vaporization of CF2Cl2 = 158…

Q: Calculate the heat change in calories for melting 65 g of ice at 0 ∘C

A: When ice melts, the physicals state changes from solid to liquid. The energy or the heat required…

Q: A 47 gg piece of ice at 0.0 ∘C∘C is added to a sample of water at 7.0 ∘C∘C. All of the ice melts and…

A:

Q: A 28.8-g sample of water at 290. K is mixed with 48.6 g water at 310. K. Calculate the final…

A: Heat capacity : It is generally the Energy  required to increase the temperature of a given object…

Q: A 25.0 g sample of benzene at 19.9 °C was cooled to its melting point (5.5 °C). How much heat was…

A: Introduction: Specific heat capacity:                                It is the amount of heat energy…

Q: 2. Calculate the amount of energy absorbed when 75g ice @ -4°C melts to 31°C. Did a phase change…

A: The change from -4°C to 31°C will have three process involved :  a ) Heating of ice from -4°C to 0°C…

Q: An 16.7-g ice cube at 0°C is placed onto a 325-g block of aluminum. Calculate the temperature change…

A:

Q: Example: 5.67 x 10² kJ of heat was needed to completely melt a 0.590 kg sample of aluminum…

A:

Q: Isopropanol (C3H7OH, aka ‘rubbing alcohol’) has a heat of vaporization of 732.2 J/g. How many Jare…

A: Energy can be calculated as: Q = mHVap

Q: Calculate the amount of heat (in kJ) required to convert 75.0og of solid water to liquid water at…

A:

Q: 75.0 grams of ethanol are heated from -145°C to 43.0°C how many joules are required? Ethanol heat of…

A: According to Hess law, the total energy change during any chemical reaction remains same…

Q: Calculate the heat change in calories for melting 95 g of ice at 0 ∘C.

A: Heat absorbed to convert solid substance to liquid form is called heat of fusion (dHfus).

Q: Benzene is used primarily as a solvent in the chemical and pharmaceutical industries. The molecular…

A: Given mass of benzene= 47.56 g  Molar mass of benzene= 78.11 g/mol Therefore moles of benzene= (…

Q: Calculate the kilocalories needed to melt a 825 gg ice sculpture at 0 ∘C∘C and to warm the liquid to…

A: The amount of kilocalories needed to melt a 825 g ice sculpture is calculated as,

Q: Calculate the heat absorbed when 149 g of liquid ethanol at 25.0°C is converted to gaseous ethanol…

A:

Q: If the heat of fusion for water is 80. cal/g, how many calories are needed to melt 4.65 g of ice at…

A: Amount of Heat required to melt a solid into liquid is known as the Heat of Fusion. Its Unit is…

Q: A pure sample of Substance S is put into an evacuated flask. The flask is then heated steadily and…

A:

Q: Given that a 10.0 g sample of ice melts and then the resultant water proceeds to warm to 20.0 C,…

A: Given mass of ice = 10g Process 1: conversion of ice at 0 degree tp water at 0 degree The total heat…

Q: Benzene has a heat of vaporization of 30.72 kJ/mol and a normal boiling point of 80.1 ∘C. At what…

A:

Q: 31.4-g sample of water at 290. K is mixed with 50.7 g water at 340. K. Calculate the final…

A: If you assume that no heat is lost to the surroundings, then you can say that the heat lost by the…

Q: A 193.1 g sample of water at 21.2°C is heated to steam at 131.5°C. How much heat was absorbed?

A:

Q: What is the physical state of tungsten (solid, liquid, or gas) at a temperature of 5993K if the…

A: At any temperature below the melting point temperature the physical state of tungsten will be solid.…

Q: A sample of C₃H₄Br₂ has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

A:

Q: Hikers climbing Mount Everest discovered it took much longer to cook a boiled egg than it does at…

A:

Q: How much ice in grams would have to melt to lower the temperature of 354 mLmL of water from 20 ∘C∘C…

A: Amount of heat lost by water would be = - m. c . dT m= mass of water = 354 mL x 1.0 g/mL = 354 g c=…

Q: Calculate the mass of ice required to cool 535 mL of diet cola (approximate as water) from 23.5 C to…

A: Heat extracted by ice to melt at 0oc  = Heat given by water[diet cola] to reach 0oc from 23.5oc.…

Q:

A: After coming in contact with Ice, water will loose energy by decreasing its temperature. Let Q1…

Q: A sample of C₃H₄Br₂ has a normal boiling temperature of 131.5 °C. The enthalpy of vaporization for…

A: Heat energy required (Q) = mC∆T m= mass of sample C= specific heat ∆T= Temperature difference

Q: Calculate the amount of heat (in joules) required to heat 43 grams of water from 28°C to the…

A: Given, mass of water = 43 g Initial temperature (Ti) = 28°C Final temperature (Tf) = 100°C Amount of…

Q: Naphthalene, an organic substance often used in mothballs, has a heat of fusion of 35.7 cal/g (149…

A: Mass of naphthalene can be calculated from the given Number of moles and molar mass:

Q: Chemistry Using a data below, calculate the molar heat of vaporization of an unknown substance (in…

A: Given the linear regression equation is,  Y = -3125.3*X + 13.248, and R2 = 0.9375

Q: A student leaving campus for spring break wants to make sure the air in her dorm room has a high…

A: Given the temperature of room, T = 22 oC + 273.15 = 295.15 K The dimension of the room =  3.25 m ×…

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.