The EPA limit for lead in bare soil for children’s play areas is 400 ppm by mass. A contractor is delivering 1171 kg of soil to a new play area. What is the maximum mass of lead (in grams) allowed in the soil delivery?

Q: The average adult human burns 2.00 × 10³ kcal per day in energy. What is this rate in kJ per hour?

A: The unit conversions are  1 kcal = 4.184 kJ To convert kcal into kJ , we need to multiply kcal with…

Q: A carpet sells for $20.99 per square yard. What is the price of the carpet per square meter? $ /m²…

A: Given: Rate of carpet = $ 20.99 /yard2.

Q: True or False  1) A 10 cm3 piece of magnesium will have a greater mass than a 10 cm3 piece of zinc.…

A: Given, Volume of Magnesium = 10 cm3 Density of Magnesium = 1.7gmL Volume of Zinc = 10 cm3 Density of…

Q: Classify each change as physical or chemical. (a) the rusting of iron(b) the evaporation of…

A: Physical change changes the size, shape or phase of substance, Chemical change is a type of change…

Q: When a 1.271g Tums tablet reacted with 44.485 mL of hydrochloric acid (density: 1.140 g/mL), carbon…

A:

Q: Gold can be hammered into extremely thin sheets calledgold leaf. An architect wants to cover a 100…

A:

Q: A brownie contains 1.30 x 102 mg of sodium. What is this mass in units of grams?

A: 1 mg = 10-3 g

Q: A titanium cube contains 3.25 x1023 atoms. The density of titanium is 4.50 g/cm Part A You may want…

A: Given : Number of titanium atoms in cube = 3.25 X 1023 atoms And density of titanium cube = 4.50…

Q: You are renting a car and you wish to travel a distance of 850. miles. If the car has a mileage of…

A: Given: Distance to be travelled = 850 miles Mileage of car = 10.1 km/L To calculate: The Gallons of…

Q: Calculate the volume in cubic centimeters occupied by one molecule of water in a beaker of water.…

A: Given that:                    Density of water = 1.00 g/cm3 To find:                  Volume…

Q: The longest river in the world is the Nile River with a length of 4,145 Mile MOL cable lengths…

A: Given, The length of Nile river is 4,145 miles. What is the length in cable lengths, meters and in…

Q: What is the difference between a chemical process and a physical process in chemistry

A:

Q: 2. Classify the following materials as heterogeneous mixture, solutions, compounds, or plements. a.…

A:

Q: Classify each property as physical or chemical. (a) the tendency for platinum jewelry to scratch…

A: ANSWER

Q: What mass of solid lead would displace exactly 234.6 liters of water? Given that lead has a density…

A: Unit of volume and density is converted as follows:

Q: Given the two liquids, gasoline (d = 0.70 g/mL) and chloroform (d = 1.5 g/mL), how could you…

A:

Q: Liposuction is a technique for removing fat deposits from various areas of the body. How many…

A:

Q: Carbon

A: Avogadro's  number gives the number of atoms, molecules or ions in one mole of the substance and it…

Q: Which is a correct statement about methods for separating mixtures?A. Distillation results in the…

A: Separation of mixtures involves various techniques and methods used to segregate the mixtures based…

Q: On average, Earth’s crust contains about 8.1% aluminum by mass. If a standard 12-ounce soft drink…

A: Given: Mass of Earth's crust = 2 ton = 2000 Kg.                             (Since 1 ton = 1000 Kg)…

Q: If your front lawn is 16.0 feet wide and 20.0 feet long, and each square foot of lawn…

A: Since front lawn dimension given as –Width =16 feetsLength=20feetsSo area of lawn = width ×length

Q: Chlorine is used to disinfect swimming pools. The accepted concentration for this purpose is 1.00…

A: Swimming pools are disinfected with small amounts of chlorine and the accepted concentration is…

Q: Solid iron is about 8 times denser than liquid water. If you have a volume of 1000 cm 3 of water and…

A: Given that: The volume of water is 1000 cm3. The volume of iron is 1000 cm3. Iron is 8 times denser…

Q: Soft wood chips weighing 17.2 kg are placed in an iron vessel and mixed with 150.1 kg water and…

A: (a)

Q: Classify each property as physical or chemical.a. the tendency of ethyl alcohol to burnb. the shine…

A: a. Ethyl alcohol burns as it reacts with oxygen in air to form carbon dioxide and water- this is a…

Q: Ultrapure silicon is used to make solid state devices such as computer chips.  What is the mass in…

A: 1111.3 g

Q: If your front lawn is 22.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates…

A: Given,Area of lawn = 22.0feet wide and 20.0feet long.Mass of a snowflake = 1.60mg.1150 new…

Q: Coconut oil has been found to improve Alzheimer's symptoms, improve skin diseases, and kill many…

A: Given d=0.903 g/mL 1 tablespoon = 14.79 mL

Q: If your front lawn is 21.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates…

A: As given that each square feet of lawn are accumulated 1450 new snowflakes per minutes.Calculate the…

Q: (d) Complete the following statements: (1) The three are solid, liquid and (i) The three scales are…

A: (1) The three states of matter are solid, liquid, and gas (2) The three Temperature scales are…

Q: Human blood typically contains 1.04 kg/L of platelets. A 7.29 pints of blood would contain what mass…

A:

Q: A blood sample of 2.81 milliliters is collected from a patient to be anaylzed for a platelet count.…

A: We know that,1 Kg = 1000g1 L = 103 milli L⇒ 1ml = 11000LGiven,Platelet Density of human blood = 1.04…

Q: Green cube: mass = 37.3g, s=2.20cm How much water would your object displace ml. Will your object…

A: Density=MassVolume If density of Object is greater than water, the Object will Sink and Vice-versa.

Q: The liquid substances mercury (density – 13.6 g/cm³), water (density = 1.00 g/cm) and cyclohexane…

A: In a mixture given of different liquids, the heavier liquid (high density) always forms lower level…

Q: To aid in the prevention of tooth decay, it is recommended that drinking water contain 0900 ppm…

A: Given  0.900 ppm = 0.900 g/106 cm3 water dimensions of cylindrical water reservoir diameter = 5.29 x…

Q: your front lawn is 24.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates 1150…

A:

Q: 5. In an experiment, you would want to separate the mongo beans from water? What process of…

A: Since you are posted with multiple questions. As per the rule, I am answering first question only.…

Q: If you have a piece of lead (dPb = 11.34g cm^-3) with a volume of 23.4 cm^3, what is the mass (in…

A:

Q: Classify each change as physical or chemical. a. Natural gas burns in a stove. b. The liquid propane…

A: a. Natural gas burns in a stove.b. The liquid propane in a gas grill evaporates because the valvewas…

Q: The Deepwater Horizon oil spill released approx. 35000 barrels of crude oil per day into the Gulf of…

A: The Deepwater Horizon oil spill released approx. 35000 barrels of crude oil per day. An oil barrel…

Q: The distance between two carbon atoms in a piece of diamond is 0.154 mn. what is this distance in…

A: Given: Distance = 0.154 nm Conversion factors: 1 pm= 1 x 10-12 m 1 nm= 1 x 10-9 m

Q: Sodium and potassium are both shiny metals in pure form, but corrode rapidly in the presence of…

A: The reaction of sodium and potassium with oxygen gas and humidity can be shown through the balanced…

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: Wine is often bottled in 0.750 L containers.  Using the appropriate equivalence statement from Table…

A: Welcome to bartleby !

Q: If your front lawn is 17.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates…

A: Given : length of lawn = 20.0 ft Width of lawn = 17.0 ft  rate of snowflakes getting accumulated =…

Q: The density of maple syrup is 1.37 g/mL and 1 tsp = 4.93 mL. If a recipe calls for 26 g of maple…

A: Volume of 1.37 g of maple syrup is one milliliter. Therefore, the volume of 26 g of maple syrup can…

Q: The radius of a potassium atom is 231 pm. How many potassium atoms would have to be laid side by…

A:

Q: A patient needs to receive 85 grams of glucose every 12 hours. What volume of a 5.0% (m/v) glucose…

A: Given: Mass of glucose required every 12 hours = 85 g. And the %(m/v) of the solution = 5.0 %

Q: a homeowner no longer desires to have a pool in their backyard. given that the volume of the pool is…

A: Given, Volume  = 52.5 ft3 Density = 1.89 g/cm3 mass = ? kg

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".