A cube of solid aluminum has a volume of 8.87×103 cm3 and a density of 2.6989g/cm3. However, the cube was dropped and you were left with a chunk with a volume of 1.70×103 cm3. How many atoms of aluminum did you lose?

Q: Thomson's experiments with a cathode ray tube demonstrated that protons are positively charges…

A: J J Thomson is one of the famous scientist in discovery of atomic structure and subatomic particles…

Q: The mass of a single iridium atom is 3.19×1072² grams. How many iridium atoms would there be in 339…

A: In order to do the calculation, we need to convert the mass in mg to g using the relation: 1 g =…

Q: How many atoms of copper are in a pure copper penny that weighs 2.15 g? (1 amu = 1.6605 10-24 g)

A: Given that the mass of copper penny is 2.15 g. The number of moles can be calculated using the given…

Q: a) How many electrons are necessary to produce a charge of -1.2 C? Express your answer using two…

A:

Q: The cullinan diamond was the largest natural diamond ever found (january 25 , 1905 25, 1905). It…

A: Use formulas Mole=mass÷molar mass Total atoms=mole×6×1023 MOLAR mass of diamond= 12g/mol

Q: Sulfur forms several compounds with fluorine. Upon decomposition, sample one produces 4.45 g of…

A: Given information is:                   Sample 1 →Decomposition F(4.45grams) + S (1.25grams)…

Q: The mass of a single platinum atom is 3.24×10-22 grams. How many platinum atoms would there be in…

A: The mass of an atom is the amount of matter present in the substance. The mass of an atom remains…

Q: You are given 1.0g samples of Iron, Silicon, and Lithium. Which of the three samples will contain…

A: Given: 1 g sample of Iron, silicon and lithium To find: Sample containing largest number of atoms…

Q: What is the mass of 3.91x1024 oxygen atoms? Select an answer and submit. For keyboard navigation,…

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: How many copper atoms are in a cube of copper metal measuring 1.33 cm on each edge? The density of…

A: Volume of copper cube = 1.33 cm x 1.33 cm x 1.33 cm                                            =…

Q: . Suppose you have a sample of sodium weighing 14.50 g. What mass of potassium would you need to…

A: Atomic mass of sodium=23 Atomic mass of potassium=39 Number of mole=given mass/molar mass So,…

Q: A pure copper sphere has a radius 0.944 in. How many copper atoms does it contain? [The volume of a…

A:

Q: How many atoms of lead are required to cover a 37.0 cm by 55.0 cm area with a sheet of lead that is…

A: The required volume to cover =  37.0 cm×55.0 cm×0.142 cm…

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm³. How many…

A:

Q: How many copper atoms are in a cube of copper metal measuring 1.15 cm on each edge? The density of…

A: Given, edge length = 1.15 cm            density of copper = 8.96 g/cm3 Now, volume of cube of copper…

Q: Suppose that mercury forms a perfect spherical droplet with a diameter of 5.0 mm. (a) What is the…

A: Density is given by the ratio of mass of the substance to its volume. 1 mole of a substance contains…

Q: What is the edge length (in cm) of a titanium cube that con- tains 2.55 x 1024 titanium atoms? The…

A: Calculate the number of moles as follows, Number of moles =2.41×10246.022×1023=0.4×10=4 moles Now,…

Q: Find the mass of 1 molecule of NO in gram. а. 4.98 х1023 b. 30 C. 4.98 x10-23 d. 15

A: According to mole concept, mass of Avogadro number (6.022 × 1023) of molecules is equal to the molar…

Q: A sample of Hg weighs 90.9 grams. Will a sample of Rb that contains the same number of atoms weigh…

A: The number of species atom will be expressed as the mathematical product species moles along with…

Q: 8. Given what you know about the law of conservation of mass, fill in the missing mass below. D0.…

A: law of conservation mass said that mass is conserved during a reaction or any physical changes…

Q: [The volume of a sphere is (4/3)πr3 and the density of copper is 8.96 g/cm3.] A pure copper sphere…

A: Number of atoms in a mole of any substance is equal to Avogadro's number.

Q: How many grams of Mg are there in a sample of Mg that contains 6.21x1023 atoms? grams

A: The amount of Mg present can be calculated as

Q: 1. What is the mass of 1.53x1024 atoms of helium? grams 2. How many helium atoms are there in 46.4…

A: Number of moles is the ratio of given mass of the substance to the molecular mass of the substance.

Q: How many atoms are contained in a block of aluminum metal measuring 4.0 mm x 9.0 mm x 11 mm? The…

A:

Q: How many grams of potassium permanganate contain 5.48 x 1020 atoms of oxygen?

A: Given: Number of atoms of oxygen in KMnO4 sample = 5.48 × 1020 atoms.

Q: A sample of Cs weighs 99.5 grams. Will a sample of S that contains the same number of atoms weigh…

A: 1 mole of any substance = 6.022 x 1023 atoms (Avogadro number)   No. of moles of a substance can…

Q: It is well known that the element magnesium has three naturally occurring isotopes. Mg-24 represents…

A: It is clearly indicates that the Mg-24 posses a natural abundance of 79% along with other isotopic…

Q: What is the mass in grams of 7.33 x 1023 atoms of lead?   How many lead atoms are there in 20.1…

A:

Q: a. What is the mass in grams of 1.48 X atoms of krypton? grams b. How many krypton atoms are there…

A: We’ll answer the first question since the exact one wasn’t specified. Please submit a new question…

Q: What is the volume of a molybdenum atom in microliters?

A: 1 cm3 = 1 mL  1 mL = 0.001 L  1 mL = 1000 microliters

Q: An atom of copper has a mass about four times greater than that of an atom of oxygen. What choice…

A: Mass of copper atom = 4 x mass of oxygen atom

Q: Atoms are the smallest spherical particles that make up any matter. If 6.0x1023 atoms of aluminum…

A: Step : 1            Calculate the mass of 1 atom of aluminium in picograms.

Q: A pure copper sphere has a radius of 0.935 in. How many copper atoms does it contain? [The volume of…

A: First convert the given radius in inch to cm. 1 inch = 2.54 cm, then

Q: The mass of a single copper atom is 1.06×10-22 grams. How many copper atoms would there be in 177…

A: The mass of a single copper atom is 1.06×10-22 grams. How many copper atoms would there be in 177…

Q: A sample of Ni weighs 73.6 grams. Will a sample of Ag that contains the same number of atoms weigh…

A:

Q: 1) What is the mass in grams of 6.86x10^23 atoms of manganese? 2)How many manganese atoms are there…

A: 1)  Number of moles of manganese = number of atoms (given) / number of atoms in 1 mole number of…

Q: A pure copper sphere has a radius 0.927 in . How many copper atoms does it contain? [The volume of a…

A: The term density is defined as the ratio of mass and volume of the given substance. It can also be…

Q: Explain the following statement: The smallest particles uniqueto a compound cannot be atoms

A: A compound can be described as a substance consisting two or more elements present in unique…

Q: (1. On the second floor of Kent Laboratory a chemistry student in 111B finds that 15.20 g of…

A: Given information:Mass of nitrogen = 15.20 gMass of oxygen for different compounds = 17.37 g, 34.74…

Q: 9. How many hydrogen atoms are there in 500.0 L of water? (dH.0 = 1.00 g mL) %3D A: 3.34 x 1025 28

A: Given, the volume of water V =500.0 L =500000 mLdensity of water d =1.00 g .mL-1we are asked to…

Q: The density of liquid mercury is 13.69 g/cm. How many atoms of mercury are in a 1.614E1 mL sample?

A: density = massvolume mass = density × volume mass of liquid mercury = 13.69 g/cm3 ×1.614 ×101 mL =…

Q: How many copper atoms would there be in 70.3 milligrams of copper

A: Mass of Cu atom = 1.06 × 10-22g  Molar mass of Cu = 65.55 g/mol  70 mg Cu = 70 × 10-3 g Cu

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

A: The question is based on mole concept. We have been given diameter of the silicon atom. we have to…

Q: The mass of a single aluminum atom is 4.48×1023 grams. How many aluminum atoms would there be in 185…

A: Given that, The mass of a single aluminum atom is 4.48×10-23grams = (4.48×10-23×103)milligrams =…

Q: White sand is made of silica (silicon dioxide, or SiO2), which has a density of 2.20 g/cm3. How many…

A: Given : Density of silica = 2.20 g/cm3  And diameter of grain of sand = 0.455 mm

Q: What is the mass of 6.77x10^24 nitrogen atoms?

A:

Q: A piece of copper contains 6.7×108 atoms. What is the mass of the sample, in units of kilograms

A: molar mass of Cu = 63.55 g/molThis is mass of 6.022×1023 atomsuse:mass of 1 atom = molar…

Q: Two pure samples of atoms, labeled A and B, contain titanium (Ti) atoms and carbon (C) atoms,…

A:

Q: A pure copper sphere has a radius of 0.935 in. How many copper atoms does it contain? The volume of…

A: First convert the given radius in inch to cm. 1 inch = 2.54 cm, then Next determine the volume of…

Q: If the density of lead is 11.34 g/cm³, how many atoms are there in a lead piece of 2.5 cm wide, 1.00…

A: Given data: The density of lead = 11.34 g/cm3. Width of lead piece = 2.5 cm. Length of the lead…

Atoms and Molecules

An atom is the smallest unit of an element that possesses all the properties of that particular element. Molecules are the smallest unit of a substance that possess all the properties of that particular substance.