The mass of an iron nail is measured before and after being placed in a beaker of water for 2 days. It is found that 0.059 g of rust was produced over the 2-day period. What mass of iron in the nail reacted with the water? Assume the nail is pure iron (use 2 significant figures)

Q: The solubility of potassium chromate is 66.8 g per 100 g of water. In an experiment, a student had…

A: Molarity is defined as “the mole of the solute per unit volume of the solution”. It is represented…

Q: A scale used to weigh produce at a market has markings every0.1 kg. Which measurement for the mass…

A: A scale used to weigh produce at a market has markings every 0.1 kg. Which measurement for the mass…

Q: If you have a mixture of 10 lb. sunflower seeds which cost 32¢ per pound and 16 lb. of cracked corn…

A: #Q.1: The mixture has 10 lb sunflower seeds and 16 lb cracked corn. Cost of sunflower seeds = 32¢ /…

Q: When elemental iron corrodes it combines with oxygen in the air to ultimately form red brown…

A: (a) The mass of the iron nail will increase after the rusting process.  Rusting involves a…

Q: A student sets up the following equation to convert a measurement. (The ?stands for a number the…

A: we need to convert from N/cm to N/mm

Q: A block of iron was measured to be 2.00 cm by 3.15 cm by 5.25 cm. If the density of iron is 7.87…

A: Block of Iron was measured and value is given Density of iron is given How Heavy was the block of…

Q: A citrus dealer in Florida sells boxes of 100 oranges at a roadside stand. The boxes routinelyare…

A: Given data contains, The average weight of orange is 7.2 ounces. Average weight of the boxes is 3.2…

Q: Convert 6.4 x 10^-28 j-s/ kg to erg- min /lb. Note that “j” means “ joule” - it is one of the units…

A: 6.4*10-28 j-s/Kg to erg-min/lb Conversion required : 1 J = 107 ergs 60 sec = 1 min => 1 sec =…

Q: The goose has a mass of 19.5 lb (pounds) and is flying at 9.90 miles/h (miles per hour). What is the…

A: Given ,             Mass of the goose (m) = 19.5 lb (pounds)                            Velocity…

Q: The density of copper is 8.92 g/ml. and the density of lead is 11.35 g/ ml. If equal masses of…

A: Density is the ratio of mass to volume.  Density =  mass / volume    Density is directly…

Q: A star is estimated to have a mass of 1x10^36 kg. Assuming it to be a sphere with an average radius…

A: First, volume of sphere with given radius 7.5x105km is determined as follows,

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A:

Q: The density of aluminum is 2.70g/cm3. A square piece of aluminum foil, 22.01cm on a side is found to…

A: Calculate the volume of aluminum foil:

Q: A student sets up the following equation to convert a measurement.

A: Unit converstions :  1. mole unit conversion:    1 mol = 103 mmol        where mmol stands for…

Q: A student uses a stoppered 25.0-mL volumetric flask to determine the density of a liquid. The mass…

A: As our Website policy we can solve only one question per post. Hence, please post question number 4…

Q: The mass of an object was determined using two balances of different precisions. Balance 1 gave 5.40…

A: Given, mass using balance 1 = 5.40 g mass using balance 2 = 5.390 g

Q: If your front lawn is 25.0 feet wide and 20.0 feet long, and each square foot of lawn accumulates…

A: Lawn is rectangular which has width = 25.0feet; length = 20.0feet  so Area = length * width…

Q: Prior to hosting an international soccer match, the local soccer club needs to replace the artifical…

A: Given : Length of field = 0.101 Km Width of field = 0.065 Km And cost of turf per m2 = $ 7.00 per m2…

Q: PART 2 Density of Gravel 0010 The mass of the empty weighing boat was measured. Then the weighing…

A: Density of a substance is defined as mass per unit volume. It is denoted as d or ρ. S.I unit of…

Q: The solubility of potassium chromate is 66.9 g per 100 g of water. In an experiment, a student had…

A: The question is based on the concept of solubility. We have to calculate how much solute can be…

Q: Decide which of the earlier measurements was the most accurate, and which was the most precise.

A: Accuracy determines that how close a measurement to the accepted value or true value. Precision is…

Q: 4. What volume of silver metal will weigh exactly 25.0 kg? The density of silver is 10.5 g/cm

A: Given that: Mass of silver metal = 25.0 kg = 25000.0 g Density = 10.5 g/cm3

Q: A student has measured a piece of aluminum foil with length of 6.25cm, width of 8.20cm, and mass of…

A: given, the density of aluminum = 2.702 g/ml length of foil = 6.25 cm width of foil = 8.20 cm mass of…

Q: An ibuprofen suspension for infants contains 100mg / 5.0mL. The recommended dose is 10mg / kg body…

A: Conversion:1 pound = 0.4535 g2.20 lb = 1 kg18 lb = 8.16 kg

Q: a thin sheet of lead measures 15.5 cm by 23.0 cm and weighs 0.627 g. if the density of lead is 11.34…

A: Given information is as follows: Length of the lead sheet = 15.5 cm Width of the lead sheet = 23.0…

Q: 9. Body surface area (BSA) is often used in place of body weight when determining medication…

A: Since you have posted multiple questions, we will solve only first question for you. If you want any…

Q: If a bullet travels at 531.0 m/s, what is its speed in miles per hour?

A: Given : Speed in m/s = 531.0 m/s

Q: An acetaminophen suspension for infants contains 80 mg/0.80 mL suspension. The recommended dose is…

A: 1 lb =0.45359 kg mass of infant = 14 lb using the…

Q: A block of wood has the measurements 78 cm X 15.1 cm X 243.1 cm has a mass of 1.716 x 103 grams.…

A: Here we need to calculate the density of the block of wood. We know that, density is defined as the…

Q: A chemist weighs herself on a scale and records a mass of 65.1 kg. She removes a calculator and…

A: Given : Mass of chemist with calculator = 65.1 Kg = 65.1 X 103 g                   (Since 1 Kg =…

Q: If I wanted to convert 34.5 meters in to km which of the following conversions factors would I need?

A:

Q: Keeping track of units during conversions can get confusing. Therefore, a good strategy is to use…

A: We will use conversion factor to convert each term in question.

Q: The average adult heart pumps about 84. mL/s of blood at 72 beats per minute. Suppose you need to…

A: Given that : Rate of volume of blood pumping = 84 mL/s The volume of blood to be circulated = 5100…

Q: A rectangular block of aluminum has a mass of 39.589 g with dimensions of 5.10 cm by 2.50 cm by 1.15…

A: Here we need to calculate the density of the aluminum block. We know that, density is defined as the…

Q: A major component of gasoline is octane (C,H8). When octane is burned in air, it chemically reacts…

A: Octane reacts with oxygen to form carbon dioxide and water. The equation for the balanced chemical…

Q: A block of wood measures 8.0 in high, 2.0 in wide, and 1.5 in deep. a. Name one physical property…

A: GIVEN Height of block of wood a =8.0 Width of block of wood b =2.0 length of block of wood c =1.5

Q: A piece of metal has a density of 2.7 g/cm? and a volume of 28.5 cm3. What is its mass in grams?

A: Given :  Density of metal = 2.7 g/cm3  Volume of metal piece = 28.5 cm3

Q: In the lab, a student determines the density of a metal object by measuring its mass on a balance…

A: Calculate the volume of the object:

Q: Q1: Fill the below situations in the table Chemical change Physical change • Melting of wax…

A: (1) There are different type of changes in nature, some of them are physical changes, where no any…

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

A:

Q: laboratory experiment requires 13.0g of aluminum wire (d=2.70g/cm cubed). The diameter of the wire…

A: Given,  Mass of aluminum wire= m= 13 g Density of aluminum wire= d= 2.70 g/cm3 Diameter of wire= D=…

Q: A student sets up the following equation to convert a measurement. (The ? stands for a number the…

A: Unit conversions involve conversion of a unit of a physical quantity into another unit of same…

Q: What volume of silver metal will weigh exactly 25.0kg? The density of silver is 10.5g/cm^3.

A:

Q: The mass of a 10 mL of graduated cylinder is 11 g. When 9 mL of a liquid A is poured into this…

A: Given data,Mass of cylinder=11gMass of cylinder+mass of liquid=24.5gVolume of liquid=9mL

Q: A 5.73g cube measures 2cm in length,12cm in width, and 0.25cm in height. What is the density of the…

A: Density of an object  is the mass of an object per volume of an object. It is expressed as,…

Q: The mass of an empty 10ml graduated cylinder is 8.6g. What is the mass of a graduated cylinder with…

A: The given data is: Mass of an empty 10 mL graduated cylinder is 8.6 g Volume of water = 10 mL…

Q: Suppose that an in-ground swimming pool has a length and width of 22.0 ft and 39.5 ft, respectively,…

A:

Q: A sheet of aluminum foil weighs 2.07g. If the sheet is 24cm long and 20cm wide, how thick is the…

A: Given details about aluminum foil is as follows: Aluminum foil weighs = 2.07g. The length of the…

Q: A student is asked to make up a 16% sodium chloride solution. She makes the solution by weighing an…

A: Given :  Weight of empty beaker = 98.5 gm  Weight of the beaker and sodium chloride = 114.71 g…

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.