The mass of gemstones and pearls is usually expressed in units called carats. One carat is equal to exactly 200 mg. What is the mass in grams of a 2.10-carat diamond ? 2.10-carat diamond = - TOOLS x10

Q: What is the density of a 789 kg object that is 1.58 m³ in size? number unit

A: Given, Mass the object = 789 kg Volume of the object = 1.58 m3 Density of the object = ?

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: Vinegar is 5% acetic acid by mass and has a density of 1.02 g/mL.What mass of acetic acid, in grams,…

A: Mass % of acetic acid in Vinegar = 5% Density = 1.02g/mL Volume of vinegar = 185 mL Mass of acetic…

Q: How many significant figures are in this number? 0.70050 g

A: • Significant figures are meaningful digits which are known with certainty.  • There are certain…

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

A:

Q: How many significant figures are in the number 0.0062500?

A: The meaningful digits which are known with certainty plus one digit which is estimated or uncertain…

Q: The density of silver is 10.5 g/cm3. What is its density in kg/m3?

A: Given data, The density of silver = 10.5 g/cm3. To calculate the density in kg/m3.

Q: Ethanol is a common laboratory solvent and has a density of 0.7890.789 g/mL. What is the mass, in…

A: Given: Density of ethanol = 0.7890 g/mL Volume of ethanol= 143143 mL To Calculate : Mass in grams…

Q: A piece of black onyx is a rectangular solid measuring 5.00 cm by 5.00 cm by 2.50 mm. What is the…

A: Given that:                      Length of rectangular solid = 5.00 cm                     Width of…

Q: The density of iron is 7.86 g/cm3. What is its density in pounds per cubic inch (lb/in3)?

A:

Q: A chemist has a block of aluminum metal (density is 2.7 g/mL). The block weighs 1.1 g. What is the…

A:

Q: 1. Which of the following quantities has three significant figures? a) 0.0095 b) 0.4 c) 101 d) 0.10…

A: a) 0.0095  two significant figure b) 0.4  one significant figure c) 101   three significant figure…

Q: How many cubic centimeters are there in 8.14 yd^3 Express the volume in cubic centimeters to three…

A:

Q: mol aqueous L A chemist must prepare 875. mL of 10.0 mM aqueous calcium sulfate (CaS0,) working…

A: On dilution, the concentration of solution decreases but the number of moles remain constant. Write…

Q: The gasoline in an automobile gas tank has a mass of 60.0 kg and a density of 0.752 g/cm3. What is…

A: Given data contains, Mass is 60.0 kg=60000g Density is 0.752 g/cm3.

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: You add 6.2 g of iron to 23.00 mL of water and observe that the volume of iron and water together is…

A:

Q: if an object has a density of 4.00 g/cm3, what is its density in units of kg/m3

A:

Q: How many significant figures are in the number 9.540x107?

A: The given number is = 9.540×10-7

Q: What is the volume of an object whose density is 9.8 g/mL and has a mass of 100 grams?

A:

Q: 4)1345 dm in to Km? 5) 780 ounces in to Kg?

A:

Q: What is the volume in cubic inches? A box measure 3.12 feet in length, 0.0455 inches in width and…

A: Given : Length = 3.12 feet  Width = 0.0455 in  And height = 7.87 in

Q: How many significant figures are in the number 9.80 x 104?

A: Significant figures: The number that makes it easy to read or write in simple form is called…

Q: If an object has a mass of  3.682 g and a volume of  17.9 ml, What is its density.

A: Density is defined as mass per unit volume. According to definition: Density = Mass/ Volume

Q: A room measures 10.0 ft by 11.0 ft. And is 9.0 ft high. What is its volume in liters

A: A cuboid is a shape with different length, breadth & height. The volume of cuboid can be…

Q: When multiplying or dividing measured quantities, what determines the number of significant figures…

A: The significant figures of a number written in positional notation are digits that carry meaningful…

Q: An object is determined to have a mass of 0.00180 g . How many significant figures are there in this…

A: Significant figures – calculation rules are as follows,Significant figure is a non-zero number…

Q: A house has an area of 221 m2m2. What is its area in each unit? Express the area in square…

A: The space occupied by a surface of object or a flat shape is known as area.

Q: What is its density in kg/m3?

A: Given :- density of Be = 1.85 g/cm3  To calculate :- density in kg/m3

Q: A student measured the dimensions of a block of aluminum.  It is 2.00 cm x 0.55 cm x 10.50 cm.  The…

A: Mass of aluminium block = 31.19 g  Length of block = 2.00 cm Breadth of block = 0.55 cm Height of…

Q: In the former British monetary system, one pound consisted of four crowns, each crown was worth five…

A: One unit is converted into other by multiplicative factor .

Q: How many significant figures are there in each number below? (a) 1.903 0 (b) 0.039 10 (c) 1.40 X 104

A: Given   How many significant figures are there in each number below? (a) 1.903 0 (b) 0.039 10 (c)…

Q: The density of benzene is 0.879 g/ml. What is the mass in grams of 1.00 qt of benzene?

A: Given data is as follows: The density of benzene = 0.879 g/mL The volume of benzene = 1.00 qt 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 rectangular box measures 6.00 inches in length, 7.00 inches in width, and 8.00 inches in height.…

A: Given values and their conversion to centimeter: 1 inch = 2.54 cm Length = 6.00 inches = 6.00 x 2.54…

Q: The density of titanium is 2.25 g/mL.  What is the volume, in milliliters, of 10.0 g of titanium?

A: Density is the mass of any substance confined in a given volume. Mathematically  Density =…

Q: A block metal has a volume of 13.4in^3 and weighs 5.22lb. What is its density in grams per cubic…

A:

Q: The Hope diamond is the world's largest blue diamond ith a weight of 44.4 carats. A carat is defined…

A: In the given problem weight of gold is 44.4 carats. Weight of 1 carat gold = 2.0 ×102 mg To find :-…

Q: 908oz to kilograms 12.8 l to gallons 125 ml to quarts

A: Ounce (oz) or kilogram (kg) are the units of mass. The relation between ounce and kilogram is…

Q: density

A:

Q: A metal cube has an edge length of 0.54 in and a mass of 23.0g. What Is the density of the metal in…

A: We have to calculate the density of metal.

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: If an object has a mass of 2.33 grams and a volume of 0.761 Mililiters, its density is

A: Density is defined as mass per unit volume. Using this we will be solving this question.

Q: what is the mass in miligrams of 567 ml of mercury? The density of mercury is 13.6 g/mL

A: Given: The volume of mercury= 567 mL Density of mercury = 13.6 g/mL Mass of mercury (in mg)=?…

Q: Ethanol is a common laboratory solvent and has a density of 0.7890.789 g/mL. What is the mass, in…

A:

Q: Liquid hexane (CH3(CH2), CH,) will react with gaseous oxygen (02) to produce gaseous carbon dioxide…

A:

Q: A drop of acetone (nail polish remover) has a mass of 35 mg and a density of 0.788 g/cm3. What is…

A: We have to calculate the volume.

Q: What is the density of the rock

A: In this question we found the density of the rock and also we know about the density.

Q: In the old pharmaceutical system of measurements, masses were expressed in grains. There are 5.760…

A: 1 lb = 453.592 g = 453592 mg Given, 1 lb contains 5.760103 grains.Each tablet contains 5 grains of…

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.