Water has a density of 0.997 g/cm3 at 25 °C; ice has a density of 0.917 g/cm³ at -10 °C. What is the final volume of ice if 1.50 L of water at 25 °C was cooled to -10 °C?

Q: What is the final equilibrium temperature when 20.00 grams of ice at -15.0°C is mixed with 5.000…

A: Heat gain by ice =Heat loss by steam Heat change in same phase=ms∆T Heat change when phase…

Q: It is observed that 1.51 kcal of energy are released when a 21.7 g sample of an unknown liquid…

A: We know that   q = m·ΔHv in which q = heat energy, m = mass, and ΔHv = heat of vaporization Given…

Q: Magnesium (Mg) has an HCP crystal structure and a density of 1.740 g/cm unit cell in cubic meters?…

A:

Q: Q3. Calculate the theoretical density for Zinc of HCP crystal structure, the atomic mass = 65.38…

A: The density of zinc can be calculated by using given formula

Q: liquids

A: a) Given four liquids are -  HF, NaF, ClF, F2. Out of these 4 liquids NaF is the ionic compound with…

Q: 5.50 g of solid sodium hydroxide is dissolved in 175 mL of water. Using a coffee-cup calorimeter,…

A: 4.  Given that,  Amount of solid NaOH dissolved in 175 mL water = 5.50 g Temperature change of water…

Q: Water melts at 0°C. A student observes a liquid that melts at 10°C. Which conclusion can the student…

A: Melting point is the temperature at which a solid melts.  It depends on - Composition of molecule…

Q: How many grams of water can be cooled from 32 C to 19 C by the evaporation of 42 g of water? (The…

A: Given, The evaporation of water = 42 g. The heat of vaporization of water = 2.4 kJ/g. The specific…

Q: The AHfus of gold is 12.55 kJ-mol1, and its ASfus is 9.384 J-mol1.K-. What is the melting point of…

A: The term enthalpy of fusion for a given substance can be defined as the change in enthalpy which is…

Q: 61. Complete the following partial ICE tables. change (b) change +x (c) change (e) 2H₂(g) + O₂(g) =…

A: 1.  2 mol of H2 reacts with one mole of O2 to produce 2 mol of H2OH2 (g)O2 (g)H2O(g)Change-x+x2. 1…

Q: At the top of Mount Everest, water boils at 70  C. Explain.

A: Boiling point is temperature at which vapour pressure of liquid become equal to atmospheric pressure…

Q: The heat of fusion of pure silicon is 43.4 kJ/mol. How much energy in kJ would be needed to melt a…

A:

Q: -9 Silicon used in computer chips must have an impurity level below 10 (that is, fewer than one…

A: No. of boron atoms = 1.8*1013Edge length(a) = 543 pm = 5.43*10-8 cmNo. of Si atoms in a cubic unit…

Q: Calculate the final temperature of a mixture of 120.0  g of ice initially at -10.50 °C and 315.0  g…

A: Heat lost by water = Heat gained by ice  Specific heat capacity of water = 4.18 J/goC Specific heat…

Q: Calculate the amount of energy given off when 13g of water at 51° C freezes to ice at 0°C. Did a…

A: At 51°C , water is in liquid phase, so first there would be cooling of water from 51°C to its…

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: Which segment of the heating curve for pure water shown below corresponds to the process of fusion?…

A: The correct option is given below:

Q: 4. You have a beaker of water at 25 C, that has a mass of 145.5g. How much energy is needed to…

A:

Q: melting point of HC1: -114.8 °C boiling point of HCI: -85.1 °C A B -90. °C C (Choose one) (Choose…

A: Given that the melting point of HCl is -114.8Co and the boiling point is -85.1 Co.

Q: The molar mass of a metal element is 296 g/mol and the density of its solid is 4.05 g/cm3. This…

A: the density of the crystal can be calculated from the mass contained in unit cell and volume

Q: How does the strength of the forces that hold the basic particles of a substance together relate to…

A: Correct Option is A Stronger forces between the particles means the substance boils at a higher…

Q: Calculate the number of joules of heat that is required to completely boil 500 mL of water at 100 C.…

A: The amount of neat energy required by liquid Substance to changed into Gaseous substance. It is…

Q: How much heat is required to change  256.0 g  of water at  58.1 ° C  to steam at  100.0 ° C?

A: Given that: Mass of water, mwater = 256.0 g Initial temperature = 58.1⁰C Final temperature = 100.0⁰C…

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: How many joules does it take to melt 50 g of ice at O0C. (heat of fusion = 333j/g)

A: The amount of heat required to convert one unit amount of substance from the solid phase to the…

Q: How much heat is released ( in J) when 54.0 g of water at 10.0 °C is cooled to form ice at - 10.0…

A: Given the mass of water, m = 54.0 g  The initial state is water at 10.0 oC.  The final state is ice…

Q: 4.What is the name of a phase change between a solid to a liquid?  a freezing  b evaporation  c…

A: melting  Option "d" is correct.

Q: 9. In the given list, PI3 , KCI, MgCO3,, SCl, CaF2, N;Os , the compound(s) that a have high density…

A: Density is the mass of the Substance occupied by its fix volume. It can be written as - Density =…

Q: The atmospheric pressure at the summit of Mount Everest is 0.335 atm.  At what temperature does…

A: Given,The atmospheric pressure at the summit of Mount Everest = 0.335 atmThe ∆Hvap for water =…

Q: Using the heat of vaporization of benzene, 395 J/g, calculate the grams of benzene that will…

A: Given that heat of vaporization of benzene is 395 J/g and also given that 9.28 k J is removed at its…

Q: Which compound has the highest melting point: NaCl, CH 4, or H 2SO 4?

A: The melting point depends on the strength of intermolecular forces. Higher the intermolecular force,…

Q: 5. Calculate the amount of heat released when 100.0 g of water at 50.0 °C is converted to ice at…

A: Given data  Specific Heat (C) for ice = 2.03 J/g-°C Heat of Fusion for ice, ∆Hfusion = 6.01 KJ/mol…

Q: A 37.0 g sample of ice is held at -12.0 °C. If the ice absorbs 25800 J of heat, what state and…

A: We can determine the final state of the water from the final temperature.  The formula is : q = m ×…

Q: If it requires 70.4 kJ of heat to boil 1.60 moles of water, what is its enthalpy of vaporization?

A: Thermodynamic is the branch of chemistry that mainly deals with the heat transfer between system and…

Q: 3. Diethyl ether (molar mass 74.12 g/mol) boils at 34.6 °C and water (molar mass 18.02 g/mol) boils…

A: The temperature at which vapour pressure of a liquid is equal to the atmospheric pressure is called…

Q: How many joules of energy must be removed from 131 g of water at 14.5 °C to form ice at 0 °C? How…

A:

Q: Convert 98.24 cal/g of ice to kj/mol

A: 1- First converted cal/g to cal/mol :  Molar mass of water( Ice ) is 18.01gmol-1  = ( 98.24 cal/g )…

Q: What correctly describes a property of one of the states of matter? O Strong intermolecular forces…

A: What correctly describes a property of one of the states of matter?   A) Strong intermolecular…

Q: . How much heat must be removed from 15.5 g of water at 90.0°C to cool it to 43.2

A: q=m.c.∆T q= heat  m=mass C.=heat capacity ∆T= difference in temperature

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 heat, in kilocalories, that is absorbed if 149 g of ice at 0.0 ∘C is placed in an ice…

A: Given data,  Mass of ice (m) = 149 g  Heat of fusion for water (lf) = 80 cal/g = 334 J/g Specific…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.