A single water molecule has a mass of 2.99x10-23 g. Each molecule contains two hydrogen atoms that together make up 11.2% of the mass of the water molecule. What is the mass in grams of a single hydrogen atom

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: 2. If the density of an unknown object was found to be 2.87 x 10 “ pounds (lbs) per cubic inch, what…

A: Density of a unknown object = 2.87 × 10-4 pounds (Ibs) per cubic inch  Density of the unknown object…

Q: The density of methanol at 20.0 oC is 0.791 g/mL.  What is the mass, in grams, of a 280. mL sample?

A: Density: The density of the substance can be defined as the mass of a unit volume of the substance.…

Q: what is the density of the salt in g/mL?

A: Density = mass ÷ volume    Rule for significant figure in division:- Round off final answer as per…

Q: What is the mass of  1.42x10^24 atoms of oxygen?  grams What is the mass of 5.01x10^23 molecules…

A: In the question, following information given - Atoms of oxygen (O) = 1.42×1024 Molecules of oxygen…

Q: aluminium has a density of 2.70 g cm3 if you bought a sheet of aluminum that is 30 m wide 1.50x10 3…

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

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Q: The density of gold is 19.30 g/cm3. What is the mass (in grams) of a block of gold with dimensions…

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Q: 2. If the density of an unknown object was found to be 2.87 x 10 pounds (Ibs) per cubic inch, what…

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Q: A student is determining the density of unknown metal with a mass of 627.0 g. The student partially…

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

A: The mass of an ethanol is to be determined from the given volume and density. It seems like the…

Q: Butane (c4h10) is the liquid fuel in lighters. how many grams of carbon are present within a lighter…

A: Density :-  The ratio of mass oa substance to its volume is known as density  Density = mass /…

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: You have three objects of varying shapes and sizes: Object 1 is a rectangular block of tin. Object 2…

A: Given: Volume of copper = 335 cm3 Density = 8.96 g/cm3

Q: A bank teller is asked to assemble “one-dollar” sets of coins for his clients. Each set is made of…

A: A bank teller is asked to assemble “one-dollar” sets of coins for his clients. Each set is made of…

Q: The density of an object was 2.622 g/in3. What was the density in g/cm3? There are 2.54 cm in an…

A: 1 g/in3 = 1 g /(2.54 cm)3          (since 1 in = 2.54 cm)             = 1/(2.54)3 g/cm3…

Q: A student measures 49.2 mL of concentrated nitric acid, which has a density of 1.53 g/mL. Part A…

A: Density ( d ) :- Density is defined as the ratio of mass and volume of solution. Density(d) = mass…

Q: a marble is placed on a scale and is found to has a mass of 22.2g.if the radius of the marble ball…

A: The mass per unit volume of a substance is known as the density of the substance. The density of a…

Q: A spherical iron ball has a diameter of 11.6 cm and has a mass of 4.60 kilograms. This particular…

A: Given: Diameter of spherical iron ball = 11.6 cm Radius of spherical iron ball = 11.6 cm/2 = 5.8 cm…

Q: 2. When you donate blood, you usually give 1.00 pints of blood. If a blood has a density of 1.06…

A: Given that 1 pint of blood is donated. Volume of blood in milliliters can be calculated as follows:…

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: If a large marshmallow has a volume of 2.25 in3in3 and density of 0.242 g/cm3g/cm3, how much would…

A: Given: Volume of marshmallow = 2.25 in3 Density of marshmallow = 0.242 g/cm3

Q: Gold (Au) has a density of 10.463 g/cm3. What is the mass in kg of 8.74 m3 of Au?

A: Given :-  Density of gold = 10.463 g/cm3  Volume of gold = 8.74 m3  To calculate :-  Mass of gold…

Q: The mass of gemstones and pearls is usually expressed in units called carats. One carat is equal to…

A: 1 carat = 200 mg Also, 1g = 1000mg

Q: Two identical sized sheets of copper and gold are placed side by side on a table. If the copper…

A: Density of gold is 19.3 g/cm3 & density of copper is 8.96 g/cm3. Now, let the cross sectional…

Q: What is 83.5 centigrams, cg, in ounces, oz? A. 295 oz B. 23.7 oz C. 0.0295 oz D. 2.37 x 105

A:

Q: You have three objects of varying shapes and sizes: Object 1 is a rectangular block of tin. Object 2…

A: Given: Volume of aluminum = 436 in3  And density of aluminum i.e. object 2 = 2.70 g/cm3.

Q: The dimensions of a 1.50x10?g metallic block are 1.166 cm wide, 9.23 mm high, and 18.87 çm long.…

A: We know density is equal to mass/ volume.   In this case mass is given and we will find volume by…

Q: An iron cannonball with a density of 7.86 g/cm3 is on display at a military museum. The cannonball…

A: Given: The density of the ball is 7.86 g/cm3. The volume is 115 cm3. The mass of the ball has to be…

Q: A lead ball has a mass of 75.0 g and a density of 11.4 g/cm3. What is the volume of the ball? 855…

A: Given data: The mass of the ball is 75.0 g. The density of the ball is 11.4 g/cm3. To calculate:…

Q: The cup is measure of volume widely used in cookbooks. One cup is equivalent to 225mL. What is the…

A: The mass of three-quarters of a cup of honey is = 252 g The volume of one cup is = 225 mL The…

Q: What is its density in kg/m3?

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

Q: What is the volume of a box in cm^3 if its dimensions are 7 inches x 7.7 inches x 10.7 inches? 1…

A: Given dimensions has to be converted from inches to cm.

Q: A piece of metal has a density of 12.67 g/mL and a volume of 19.8 L What is its mass

A: Given density is 12.67 g/mL and a volume is 19.8 L  Then mass will be

Q: Your 50 mL beaker has a mass of 6.29 g. You add 10.00 mL to the 50 mL beaker and now the total mass…

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

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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: If a sample of clay has a density of 1.7 g/cm3 and it takes up a volume of 0.43 cm3, what is its…

A:

Q: If a dog has a mass of 20.1 kg, what is its mass in the following units? Use scientific notation in…

A: Given :-  Mass of dog = 20.1 kg  To calculate :-  Mass in grams (g) Mass in milligrams (mg) Mass in…

Q: An empty beaker weighs 42.77 g. When completely filled with water, the beaker and its contents have…

A: Density is a physical quantity that can be determined with the help of the mass and volume of the…

Q: The density of mineral oil is 0.834 g/mL. What is the mass in kg of the mineral oil in a cubic…

A: Given that: density of oil = 0.834 g/mL side of a cube = 11 inches. To find: The mass in Kg of…

Q: chemist has a block of iron metal (denisty is 7.87 g/ml) The block weighs 1.90g What is the volume…

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Q: The density of a metallic sample is 13.9 g/cm3. What is its density in pounds per cubic inch…

A: The given density = 13.9 g/cm3 Now given that  1 lb = 453.6 g, 1 in = 2.54 cm

Q: Mr Fast runs 3.7km. Mr Slow runs 630m. How much further does Mr Fast run than Mr Slow?   Add…

A: Since you have posted a question with multiple sub-parts, we will solve the first three subparts for…

Q: What is the mass of 1.91 x 10^23 atoms of nitrogen? ____ grams What is the mass of 3.91 x 10^23…

A: Since moles of any atom = number of atoms / Avogadro's number And moles of any molecules = number of…

Q: Substance A has a density of 0.30 g/ml and substance B has a density of 0.690 g/ml. Are the…

A: Density of a substance is defined as it mass per unit volume.The density (d), mass (m) and volume…

Q: The average dollar bill is 1.8x107 nm long and weighs 0.987 g.  The distance to the sun is 1.5x108…

A: This question is related mass finding out. First utilitizing the given information in equivalent…

Q: A certain solution is 5.84 % by mass in calcium carbonate (CaCO3).  If the density of the solution…

A: Given that : % by mass of calcium carbonate (CaCO3) =  5.84 % The density of the solution = 1.02…

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: Given : Mass of object = 10.782 g And volume of object = 13.72 mL

Q: What is the mass of a magnesium block that measures 2.5 cm x 3.5 cm x 1.5 cm if the density of…

A: Given : Density of magnesium = 1.738 g/cm3  And measurement of block = 2.5 X 3.5 cm X 1.5 cm

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.