250 grams of ice, initially at -15 C, is added to coke (240

Q: whats the differerence between 24k gold being a substance and element and 14k gold being a mixture…

A: Differerence between 24k gold and 14k gold:

Q: What is the definition of a physical property? What is thedefinition of a chemical property?

A: answer is discussed below :

Q: Why is it that the red liquid inside the thermometer moves up when a thermometer is heated? Select…

A: Since you have posted more than one question, we will solve only first question for you. If you want…

Q: A 37.2-g sample of lead (Pb) pellets at 20°C is mixedwith a 62.7-g sample of lead pellets at the…

A: Given data contains, Mass of lead pellets at 20°C is 37.2g. Mass of lead pellets is 62.7g.

Q: A new temperature scale, know as the Ungoogable (U) scale is related to Fahrenheit (F) in this way:…

A: Here, Temperature in Fahrenheit, TF=179.50 degrees. To determine the Ungoogable temperature(TU).

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: ange alcohol burning- Chemical Change alcohol boiling– Onsical change 2. In boiling water, the…

A: In  boiling  water,  the bubbles  contain-a  a  mix  of  hydrogen  gas  and  oxygen gas  in  a 2:1…

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: 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: 3. A pinch of bread was placed inside a test tube and heated until it became blackish D. Both…

A: 3. On heating bread forms black precipitate and release a gas.

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: Find the unkwon metal if 43.9 g of that metal is heated to 97.9°C and then transfered into a…

A: Given: Mass of the metal= 43.9 g Mass of the water= 120.0 g Specific heat capacity of water= 4.18…

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: Wanting to make your own ice cream at home, you purchase milk, ice, and salt (MW = 58.44 g/mol). You…

A: A question based on properties of liquids that is to be accomplished.

Q: An 85.0 g piece of copper is heated to 98.7 degrees C.The copper is then quickly put in to water…

A: Answer:- This question is answered by using the simple concept of calorimetry which states that heat…

Q: You are performing an experiment where you place 6.4673 g of Al metal at 209.82 C into a coffee cup…

A: Given, mass of Al metal =6.4673 g at 209.82 °CA coffee cup calorimeter that contains 87 g of water…

Q: Calculate the amount of heat needed to boil 39.6 g of hexane (C,H4), beginning from a temperature of…

A: Given - - > m = 39.6 g T1 = 47.6 °C T2 = 68.72°C ( final temperature because the hexane has to…

Q: Which of the following illustrations best represents themeasurement of the temperature of boiling…

A: Boiling point can be defined as the temperature at which the vapor pressure of liquid becomes equal…

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: Henrietta has a sample of a pure substance in a beaker. She heats the substance to a temperature of…

A:

Q: Which of the following is the largest temperature? O 85°F O380 K O All of these temperatures are all…

A:

Q: Calculate the amount of heat needed to boil 122. g of hexane (C,H4), beginning from a temperature of…

A:

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: Iculate the amount of heat needed to melt 123. g of solid acetic acid (HCH,CO,) and bring it to a…

A: Calculation as shown below

Q: The scenes below illustrate two different mixtures. When mixture A at 273 K is heated to 473 K,…

A: In a physical change, the physical state of the substance (like phase, density, hardness) will…

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: 250 grams of water, initially -15 C, is added to coke (240 grams) at 35 C, if all the ice melts,…

A: The final temperature of the coke is

Q: You are taking a road trip in a car without A/C. The temperture in the car is 85 degrees F. You buy…

A:

Q: How much energy is required to raise the temperature of 47.05 mL of water from 25.52°C to 27.89°C?…

A:

Q: 1. In the following heating curve, which segment represents a freezing and melting?

A: Since we know that freezing point is the temperature where liquid state change to solid state  And…

Q: A pot containing 384 mL of water at 18.3°C is heated on a stove until its temperature is 69.9°C.…

A: as we know that the density of water is 1g/ml so d= m/v  m= d* v       = 1*384 g       = 384 g

Q: Which is a correct statement about heat and temperature? А. О Heat and temperature are both forms of…

A: Answer of given question are as follows:

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

A:

Q: Calculate the amount of heat needed to boil 15.5 g of hexane (C,H4), beginning from a temperature of…

A:

Q: 18) What will the temperature of a 2100. mL sample of nitrogen at 526. mm Hg and 42.4oC be, in oC,…

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: When a 43.0 g piece of aluminum was placed in 250. g water at 20.4 degrees C, the temperature raised…

A: Given data: Mass of the aluminium, M = 43.0 g Specific heat of the steel, Caluminum = 0.900 J/g/oC…

Q: The boiling point of liquid nitrogen, used in the removal of warts is -195.8° What is the…

A: Given: Boiling point of liquid nitrogen=-195.8°C

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 355 g sample of water goes 85 degrees C to 42 degrees C. Calculate the amount of heat energy (in…

A: Given: Mass of water, m =355 g Initial temperature, T1=85oC Final temperature, T2=42oC The specific…

Q: Two pure substances, A and B, each melt at 87.5 °C. An unknown pure substance X also melts at 87.5…

A:

Q: A 45-kg sample of water absorbs 345 kJ of heat.  If the water was initially at 22.1 degrees celsius,…

A: Change in temperature is determined using the given formula,Specific heat of water is 4.184 kJ/kg.oC

Q: Indicate for the examples below if the change is physical (P) or chemical (C) 1. milk turns sour…

A:

Q: To identify a liquid substance, a student determined itsdensity. Using a graduated cylinder, she…

A: Given data contains, Mass of the sample is 38.5g. Volume of sample is 45 mL. Density of propyl…

Q: A 31.8 g wafer of pure gold initially at 69.8 °C is submerged into 63.7 g of water at 26.9 °C in an…

A: According to the principle of calorimetry principle, heat loss from one object is equivalent to heat…

Q: The temperature of an ingot of silver is60°C above room temperature right now. Twenty minutes ago,…

A: Given, The temperature of an ingot of silver is 60°C above room temperature right now and it was…