12 in a dozen. If a farmer's chickens produce an average of eggs 726 dozen eggs in a month, how many eggs are reported per month? 726 dozen × 12 eggs/dozen = eggs

Q: If an object has a density of 3.99 g/cm , what is its density in units of kg/m 3? 3.99 x 103 kg/m3…

A: The Density is defined as the ratio of the mass of the substance to that of volume of that…

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: If the rate of a car on the 60 freeway is 65 mph or miles per hour, what is the car’s rate in km per…

A: Introduction: The speed of a moving object is defined as the distance travelled by the object in per…

Q: What is the density, in g/mL, of the metal?

A:

Q: 1.If the temperature is 20. °C, what is the corresponding temperature on the Fahrenheit scale?…

A: Physical property is the substance inherent property. To get this no need of the change in chemical…

Q: What is the volume of a 275.27 g chunk of iron (Fe)? The density of iron is 7.874 g/cm3.

A: Ans given as follows

Q: What are 2 cups of chocolate chips converted into nanograms? 1 cup of chocolate chips = 170 g 1…

A:

Q: A chemist adds 4 drops of hydrochloric acid to a beaker. What kind of number is "4" in this example?…

A: Here the chemist is adding 4 drops of hydrochloric acid so it not a measured number and the…

Q: What is a conversion factor? Give an example of a conversion factor

A: Mathematical tools are used for the measurement of various values.

Q: The mass of earth is 5.98 ×10²⁴ kg. What is the mass expressed in tera-grams?

A: Given that : Mass of earth = 5.98 ×10²⁴ kg

Q: Consider the equation: (9 x 10^-38) x (9.00 x 10^3) x 35.3= Y  how many significant figures should Y…

A: The significant figures can be defined as the digits in the given number that carry some meaning and…

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: A wooden object has a mass of 10.782 g and occupies a volume of 13.72 mL. What is the density of the…

A: For division: In any problem, the minimum number of significant figures in any number is used to…

Q: The volume of water in large scale reservoirs is often measured in units of an acre-foot, which is…

A: 1 acre-foot = 43,560 ft³ 1 US liquid gallon = 231 cubic inches 1 US liquid gallon = 3.785 liters 1…

Q: A car has a milage rating of 38 mi per gasoline. How many km can the car travel on 750ml of…

A:

Q: The volume of a sample of oxygen gas changed from 10 mL to 11 mL as the temperature changed. Is this…

A: A chemical change is observed when there is a change in the chemical composition of elements.…

Q: B. 0.108 lbs/in3 C. 534 lbs/in3 D. 0.697 lbs/in3 2.)The density of an alcohol is 0.788 g/mL. What…

A: Density = 19.3 g/cm3  Density = lbs/in3

Q: A typical human body contains between 9 and 12 pints of blood. A woman's body contains 10.01 pints…

A: Given : Density of  hemoglobin in her blood = 13.5 g/dL

Q: If the volume of a cube is 21.8 cm3, what is the volume in cubic feet? 54 cm = 1 in, 12 in = 1 ft

A: Given data : Volume of cube = 21.8 cm3 The formula for calculating the volume of cube is  V =…

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 rectangular solid measures 1.0 m by 5.6 cm by 2.1 dm. Express its volume in cubic meters, liters,…

A: The volume of the rectangle can be calculated by the formula,Volume (V) = length (l) × width (b) ×…

Q: There are 12 eggs in a dozen, If a farmer's chickens produce an average of 495 dozen eggs in a…

A: Given that,  12 eggs = 1 dozen Farmer's chickens produce 495 dozens eggs on average per month…

Q: Lead has a density of 11.4 g/cm3. What is the mass in grams of a cube of lead that has the…

A:

Q: 1. Convert 6.4 decades to seconds. (24 hours 6.4 decades x ( 10 jo years)x(305 days) x 60 minutes…

A:

Q: A student is determining the density of an unknown metal with a mass of 87.8 g. The student…

A: Given: The mass of an unknown metal, m = 87.8 g The vol. of water in the graduated cylinder without…

Q: A marble weighs 3461 µg. How much does it weigh in grams?

A: Given the weight of marble = 3461 µg  We have to convert this weight into grams(g).

Q: Calculate the density of a metal object with a volume of 20.2 cm3 and a mass of 159 g The object is…

A: Given: The mass of the object, m=159 g  The volume of the object, V=20.2 cm3 The density of the…

Q: Beer is often sold by the pony keg, which has a volume of 7.75 gallons.  How many liters is this?…

A:

Q: A bedroom has a volume of 108 m^3. What is it volume in cubic kilometers (Km^3)?

A: Given: Volume of room = 108 m3

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: While driving your rental car on your vacation in Europe, you find that you are getting 13.4 km/L of…

A:

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

A:

Q: How many cubic feet are there in a room measuring 6m x 10m x 3m?

A: Cubic feet is calculated by measuring the height,width and length.

Q: There are 12 eggs in a dozen. If a farmer's chickens produce an average of 722 dozen eggs in a…

A: 1 dozen egg = 12 eggs There are 722 dozen eggs are produced in the one month.  Means , 1 month = 722…

Q: If gasoline costs 98.5 cents per liter in Canada, what is the price in dollars per gallon? $3.73…

A: The conversion of quantity from one unit to another unit is known as unit conversion. During the…

Q: The output of a plant is 4335 pounds of ball bearings per week (five days). If each ball bearing…

A:

Q: A sample of iron bar has a density of 7.87g/in^3. If the bar measures out to be 17.1mm x 6.6mm x…

A: Density of the iron bar = 7.87 g/ in^3.Volume of the iron bar = 17.1 mm x 6.6 mm x 5.3 mm = 598.158…

Q: You are in a game show and you are asked to pour a gram of sand in the balance, the person closest…

A: Given, the exact value is 1 gram.Individual 1 = 0.894 gIndividual 2 = 765 mg = 0.765 gIndividual 3 =…

Q: While driving your rental car on your vacation in Europe, you find that you are getting 10.4 km/L…

A:

Q: What is 242 lb converted to milligrams? What is 68.3 cm^3 converted to cubic meters? What is…

A: 1 lb = 453592 milligrams.  1 cubic cm = 1×10-6 cubic meters. 1 cubic meter = 1000 litres. 1 mg =…

Q: The number 1960900, when rounded off to 4 significant figures, would appear as _______   a. 1.961…

A: Scientific notation: Scientific notation is a way of expressing numbers to be conveniently written…

Q: tO Another Unit Gasoline at a gas station in Canada costs 1.13 Canadian dollars (CAD) per liter. If…

A: The cost of gasoline in Canada is = 1.13 dollar (CAD)/liter The exchange rate of US and Canadian…

Q: The density of iron is 7.87 g/mL. What is the mass of a 2.00 cm × 4.00 cm × 1.00 cm block of iron?…

A: The answer is given as follows

Q: In SI units, land area is measured in hectares (1ha =1hm2) The commonly used unit for land area in…

A: The conversion factor for ha and cm units is,1 ha = 1 hm21 hm = 10000 cmHence, the conversion of ha…

Q: How many kilometers per hour are 15 miles per hour?

A: Given  Velocity = 15 miles/hour  Velocity in km/hour = ?

Q: 1. Calcium, an element, is a dull, gray solid that melts at 839°C. When it is placed in water,…

A: As per the rules, only the first question can be answered:

Q: What is the average height for an American male (69.5 inches) in centimeters? One inch is 2.54…

A: Unit conversion is a basic tool of measurement, which convert one unit into another unit with…

States of Matter

The substance that constitutes everything in the universe is known as matter. Matter comprises atoms which in turn are composed of electrons, protons, and neutrons. Different atoms combine together to give rise to molecules that act as a foundation for all kinds of substances. There are five states of matter based on their energies of attraction, namely solid, liquid, gases, plasma, and BEC (Bose-Einstein condensates). 

Chemical Reactions and Equations

When a chemical species is transformed into another chemical species it is said to have undergone a chemical reaction. It consists of breaking existing bonds and forming new bonds by changing the position of electrons. These reactions are best explained using a chemical equation.