A 37.2-g sample of lead (Pb) pellets at 20°C is mixedwith a 62.7-g sample of lead pellets at the sametemperature. What are the final mass, temperature, anddensity of the combined sample? The density of Pb at20°C is 11.35 g/cm3

Q: What volume (in L) does a 3.88 mol sample of hydrogen gas occupy at STP? (Do not show your work in…

A: Number of moles is calculated by dividing the given mass with molecular mass

Q: Ethyl chloride is sold as a liquid (see photo) under pressurefor use as a local skin anesthetic.…

A: (a). At 120C, ethyl chloride turns into gaseous form from liquid form. Thus liquid state changes to…

Q: (a) Normally the human body can endure a temperatureof 105°F for only short periods of time without…

A: Given data part(a) : temperature  = 105 oF  part(b) : freezes point temperature =  −11.5°C part(c) :…

Q: Ethyl chloride is sold as a liquid (see photo) under pressurefor use as a local skin anesthetic.…

A: (a). At 120C, ethyl chloride turns into gaseous form from liquid form. Thus liquid state changes to…

Q: Platinum, Pt, is one of the rarest of the metals. Worldwideannual production is only about 130 tons.…

A: We know that, density can be expressed as,

Q: A 2.94 g lead weight, initially at 11.1 ∘C, is submerged in 7.93 g of water at 52.7 ∘C in an…

A:

Q: A 19.0 g sample of O₂ at standard temperature and pressure (STP) would occupy what volume in litres?

A: STP means standard conditions of temperature i.e. 273.15 K and pressure i.e. 1 atm

Q: How many milliliters of water at 23 °C witha density of 1.00 g/mL must be mixed with 180 mL of…

A: Given information, Initial temperature of the water = 23oC Final temperature of the water = 45oC…

Q: A hot air balloon has a volume of 5.55 x 104 m3 at 57°C. a. What would be its volume at 27°C? b. At…

A: According to ideal gas law, PV = nRT where P = pressure V = volume n = moles R = gas constant T =…

Q: A 3.00 kg sample of water is heated from 14 degrees celsius to 53 degrees celsius. How much energy…

A: Given,Mass of water = 3kgInitial temperature = 14 degrees CelsiusFinal temperature= 53 degrees…

Q: Which of the following represents an increase in kinetic energy? O A. Cooling steam from 165°C to…

A: When the temperature of an object increases, the average kinetic energy of its particles increases.…

Q: The warmest temperature ever measured in the United States is134 °F on July 10, 1913, in Death…

A: The given temperature is 134°F.

Q: A sample of water is heated from room temperature to justbelow the boiling point. The overall change…

A: The temperature change in kelvins has to be given.

Q: A 571.4 mL sample of carbon dioxide was heated to 371 K. If the volume of the carbon dioxide sample…

A: According to ideal gas equation, temperature is directly proportional to volume of the gas.  ideal…

Q: A 324.0 mL sample of carbon dioxide was heated to 303 K. If the volume of the carbon dioxide sample…

A: This question is simple conceptual problem and based the "Charles law". In this question we have to…

Q: 1. The density of ice at 0°C is 0.9168 g mL-1, and that of liquid water at 0°C is 0.9999 g mL-. (1)…

A: Density of a substance is defined as mass of substance per unit volume. SI unit of density: kilogram…

Q: Gold is alloyed (mixed) with other metals to increase itshardness in making jewelry. (a) Consider a…

A: (a) calculate the percentage of gold (by mass) in the jewelry,

Q: After the label fell off a bottle containing a clear liquid believedto be benzene, a chemist…

A: Record the given data, The given volume of the liquid is 25.0 mL. The given mass of the liquid is…

Q: A ball of silver at 125 °C was added to 65 mL of H2O at 25 °C and the temperature rose to 45 °C.…

A: Heat loss (Q(Ag)) by the silver ball and heat gain (Q(water)) by the water body is calculated as…

Q: Ablock of coper of unknown mass has an nial temperalure of 0.0C The copper is immersed in a beaer…

A:

Q: Which statement describes the relationship between microscopic and macroscopic phenomena? O…

A: Macroscopic phenomena are the process or activities that can be observed , experienced or measured…

Q: Household ammonia is a solution of ammonia gas and water, and it is used as a general purpose…

A:

Q: you have sample of urea (a solid at room temperature) and pure ethanol ( a liquid at room…

A: The measurement of the amount of substance depends on the physical state of the substance.We can…

Q: Water has a density of 0.997 g>cm3 at 25 °C; ice has a densityof 0.917 g>cm3 at -10 °C. (a) If…

A: Density describes any substance's weight that gets divided by the substance's volume. For bulky…

Q: Which is more efficient method of separating solids from liquids by filtration or by decantation?…

A: Filtration is a process of separation of solid particles from liquids by passing the liquid through…

Q: A. A balloon at 25°C has a volume of 595 mL. If the temperature is raised, will the volume increase,…

A: A. For a definite amount of gas, at constant pressure, the volume of the gas increases with an…

Q: If 132 g of ice at 0.0°C is added to 1.64 L of water at 98°C, what is the final temperature of the…

A: a) Given: Mass of ice = 132 g. Initial temperature of ice = 0.0 oC Volume of water = 1.64 L = 1640…

Q: A small hot-air balloon is filled with 1.02×106 L of air (d = 1.20 g/L). As the air in the balloon…

A:

Q: A small hot-air balloon is filled with 1.02×106 L of air (d = 1.20 g/L). As the air in the balloon…

A: Step 1:We have given a hot air balloon which is filled with 1.02×106 L of air and this air is then…

Q: The density of methanol at 208C is 0.791 g/mL. What isthe mass of a 50.0 mL sample of methanol?

A: Density of any liquid, d can be expressed as ------------ d = mV where m is the mass of the liquid…

Q: The density of ice at 0 °C is 0.9168 g/mL, and that of liquid water at 0 °C is 0.9999 g/mL. a.…

A: We, have to calculate the volume of 1 gram of ice and one gram of water.

Q: A soda bottle is flexible enough that the volume of the bottle can change even without opening it.…

A:

Q: Describes how tempera

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

Q: A vial is filled with chloroform (d = 1.48 g/mL), mercury (d = 13.53 g/mL) and water (d = 1.00…

A: The substance with the high density will form the lower layer and the substance with the least…

Q: Which of the following needs greater quantity of heat for 1 kg of water? a. freezing it b. Freezing…

A:

Q: Compressible is a classification of matter, where its molecules are existing separately from each…

A: A solid cannot be compressed much because its particles are already very closely packed and there…

Q: 1.12 x 10-2 s = CS

A:

Q: Thermal energy is the sum of kinetic and thermal energies that are associated with particles of…

A: thermal energy in molecule are generally internal energy,  heat involved in molecule.

Q: Define the term Derived Unit?

A: To define derived unit, it is important to understand the meaning of SI base units. International…

Q: 11. During heat conduction in solids * a. the energy of the particles expands. b. the particles…

A:

Q: Q2. Explain the following changes in states of matter. Write two examples for each. (a) Boiling (b)…

A: States of matter

Q: Dr. Lussier enjoys a bath after a long day. After filling his tub with exactly 216.0 L of hot water,…

A:

Q: A sample of a carbon tetrachloride, a liquid once used in dry cleaning, has a mass of 39.98 g and a…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: A strip of aluminum weighing 0.789 g is heated from 26.1 degrees celsius to 45.8 degrees…

A: Specific heat of aluminium, s = 0.90 J/goC Mass of Al = 0.789 g  q = ms∆T  q = 0.789 x 0.90 x ( 45.8…

Q: A flask weighs 64.25 g when empty and weighs 91.75 g when filled with water at 20oC. However, when…

A: The question is based on the concept of density and volume calculations. density is defined as…

Q: Two 35.0 cm metal rods, one made of copper and one made of aluminum, are placed end to end, touching…

A:

Q: A soda bottle is flexible enough that the volume of the bottle can change without opening it. If you…

A: Initial volume, V1 = 2.0 L Initial temperature, T1 = 25oC = 298 K Final volume, V2 = ? Final…

Q: A 145.3 mL sample of carbon dioxide was heated to 301 K. If the volume of the carbon dioxide sample…

A: Charles law states that the volume of an ideal gas is directly proportional to the absolute…

Q: In the United States, water used for irrigation is measuredin acre-feet. An acre-foot of water…

A: Given: An acre is 4840 yd2 (a) In an acre-foot, there are 43560 cubic feet of water. Every cubic…

Q: A sample of neon occupies 250 mL at 22 degrees C. what volume would it occupy at 45 degrees C

A: Given values are, Volume V1= 250 mL Temperature T1= 22°C Temperature T2=45°C Volume V2=?

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.