Consider a block of wood having a volume of 125 cm³. If the clock of wood burns at a rate of 15 g/min and you take the density of the wood as 757 kg/m³, how long will it take for the block to burn completely?

Q: Sugar decomposes in water at a rate proportional to the amount still unchanged. There were 70 lbs of…

A: Answer: In the problem statement it is said that, 3 hours is the time required for the sugar…

Q: c) You decide to preserve some fish using sodium chloride. Explain how the sodium chloride works as…

A: Hello. Since more than one question gas been asked, the first question shall only be answered in…

Q: Consider a block of wood having a volume of 125 cm³. If the block of wood burns at a rate of 15…

A:

Q: Food safety guidelines recommend that a beef rib roast (bone-in) should cook for 23.0 minutes per…

A: According to the question, it is given that time is taken to cook 1 Pound roast = 23.0 minutes Thus,…

Q: A college student produces about 101 kcal of heat per hour on the average. What is the rate of…

A: According to the rule of conversion of the unit, 1 cal is equal to 4.184 J So, (1×103) cal is equal…

Q: 2. As part of the process in the production of a perfume, a certain substance with water is…

A: It follows first order kinetics.  So, ln(a0/at) = kt  Or, k = (1/t)ln(a0/at) .....(1)  Here, a0 = 75…

Q: For a certain shrink film, an edge of length 15.6 cm is reduced to a length of 6.00 cm upon exposure…

A: 16.92 cm2 will be the area.

Q: Area or Field Medicine ommunication Consumer Product Some Chemical Components (Chemical Formula) Use…

A: Consumer Product  Consumer products are those that are purchased by the typical customer for…

Q: Food safety guidelines recommend that a beef ribs roast (bone-in) should cook for 23.0 minutes per…

A: The recommended cooking time per pound of beef ribs has been provided as follows: Time=23.0 min/lb…

Q: A student performs a reaction and the mass of the watch glass, filter paper, and product together…

A: Mass of watch glass + filter paper + product = 130.0g Mass of watch glass = 80.0g Mass of filter…

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A: Given: Each glass of drink contains = 8.8 mg Allura Red Person's body weight = 165 lbs To Calculate:…

Q: A sample of silver (cs = 0.235 J/(g-°C)) is heated to 84.92°C and then dropped into 31.53 g of water…

A: Specific heat: Amount of energy required to raise the temperature of water by one degree. We can…

Q: Alabama Instruments Company has set up a production line to manufacture a new calculator. The rate…

A:

Q: Answer the following questions.  1. What are the benefits of green chemistry? 2. How can…

A: 1. If one follows green chemistry guidelines, then environmental benefits are:− there is check on…

Q: The thermogram in Figure below shows the change in mass of a sample of Copper sulfate pentahydrate,…

A: The mass fraction of water in CuSO4.5H2O = Mass of water in CuSO4.5H2O/ (Molar mass of CuSO4.5H2O)

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A: Given : the volume of beverage consumed = 12 fl oz since 1 fl oz = 29.5735 mL  hence volume of…

Q: If the mass of the hot water is -67.46 and initial temperature of hot water is 51.0 and mass of cold…

A: First, the amount of heat absorbed by the cold water is determined.

Q: Food safety guidelines recommends that a beef rib roast should cook for 23.0 minutes per pound based…

A: Given: Time taken to cook 1 pound of beef rib roast=23.0 minutes. The time taken to cook  5.17…

Q: Which type of energy is stored in fuels?

A: A fuel is substance that can be made to react with other substances so that it releases energy in…

Q: Earthquake may occur due to: a. Transform tectonic boundaries. b. Active jointing area. c. a sudden…

A:

Q: Complete the table for Experiment 2 and find the kinetic energy of different masses of cars…

A: In the given question we have to calculate the kinetic energy of different masses of cars travelling…

Q: As an EPA scientist studying catalytic converters and urban smog, you want to find Kc for the…

A:

Q: 8. Mars is known as the "Red Planet" because of the red color of its soil. The red soil is rich in…

A:

Q: One of the volunteers suggests hiring an on-site water treatment company to remove the arsenic from…

A:

Q: A subcompact car with a mass of 1.60×103 kg and a loaded dump truck with a mass of 1.60×104 kg are…

A: Since ,         kinetic energy KE=12mv2where ,           m=mass of moving particle…

Q: Allyson and Cami add 25 mL of 3 M hydrochloric acid (HCl) to beakers containing 0 mL, 25 mL, 50 mL,…

A: In the given question, different volumes of distilled water containing beakers are given and 25ml of…

Q: The mass of the solution totals 20 grams.   C. The temperature of the solution is 350 C.   D.

A: Correct option is C. The temperature of the solution is 35 degreeC. These is due to when calcium…

Q: 14. Which absorbs heat faster? Land or water? Why?

A: “Since you have asked multiple question, we will solve the first question for you. If you want any…

Q: A student places 3.157 grams of copper wire along with excess sulfur into a crucible (and cover),…

A: When Cu (copper) reacts with excess S (sulfur), Cu2S is formed as the product. The corresponding…

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A: Mass of the person given is 225 lbs Since 2.205 lbs = 1 Kg  Hence mass of person in Kg = mass in lbs…

Q: Why do you think engineers believe that spraying, and not a steady stream of fuel, is more…

A: Spraying a fuel and steady stream supply of fuel have different surface area of action. Hence they…

Q: What kind of change is ripping a piece of paper towel from the roll, and what kind of change is…

A: Ripping a piece of paper towel from the roll is a physical change as here the piece of paper is…

Q: Eastern loggerhead shrike is a critically endangered species of bird in Canada. Its population has…

A: This is a pure logic question. What we have is the number of birds in 2004 and 2009. So it's very…

Q: Many common materials that we ingest, though quite safe in reasonable quantities, become toxic when…

A:

Q: Classify each change as physical or chemical. A silver surface becomes tarnished after exposure to…

A:

Q: Given the experimental information in the following table below: Why are the rates calculated not…

A: The reaction rate is the change in the concentration of a reactant or product with time(M/s).…

Q: An unlit match contains approximately 1,000 J of chemical energy.When it burns , the match released…

A: According to the first law of thermodynamics, In the law of conservation of energy, energy can…

Q: the Daily Value for saturated fat is 20 grams (g), which equals 100% DV. If the Nutrition Facts…

A: Since daily value helps you to make informed food choices. It is labelled on right-hand side of…

Q: Complete the below examples by stating which types of energy the objects starting with and what its…

A: Glow stick on cracking, the glass inside gets broken. Its ingredients start mixing freely and react,…

Q: The radioactive isotope mercury-197 is used in medical imaging as indicated on the table above. If…

A: The half-life of the mercury-197 is = 64.1 h The initial amount of mercury-197 is = 57.9 mg The…

Q: what is the definition of a single replacement

A: • The chemical reaction in which one element takes the place of another element in a compound is…

Q: Energy consumption in the United States produced 4.57 x 10^6 metric tons of carbon dioxide emissions…

A: Given: Mass of CO2 = 4.57 X 106 metric tons.

Q: Burning paper is a chemical change.

A: Chemical change is in which chemical composition is changed of the compound.

Q: Is cooling a nuclear reactor consider a chemical or a physical change?a) Physical b) Chemical c)…

A: If the reaction is irreversible and bond making and bond breaking occur in the reaction and then…

Q: In Raiders of the Lost Ark, Indiana Jones tried to remove a gold idol from a booby-trapped pedestal.…

A: Given : Mass of gold idol = 2.00 Kg And density of sand = 3.00 g/cm3 = 3.00 Kg/L…

Q: Discuss 5 advantages and disadvantages of palm oil source of oleochemicals in Malaysia.

A: Advantages of palm oil source of oleochemicals in Malaysia. 1) Malaysia contributes about 20% to the…

Q: Boron is concentrated mainly in the lungs (0.34 mg), thyroid gland (0.30 mg), spleen (0.26mg), brain…

A: Given that, Amount of boron in lungs = 0.34 mg Amount of boron in thyroid gland = 0.30 mg Amount of…

Q: 104.3 MHz in energy

A: We know that , energy of a photon is related to Plank's constant as,…

Q: 7) A chemical company developsa new processthatresults in some waste. Their internal studies show…

A: Any chemical substance that causes malignant growth is known as a cancer-causing agent. However,…