How many helium atoms are there in a helium blimp containing 537 kg of helium? Express the number of helium atoms numerically.

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: a. What is the mass of 1.49 x 1024 atoms of chlorine? grams b. What is the mass of 9.12 x 1023…

A: a) mass of 1.49×1024 atoms of chlorine.

Q: Calculate the number of atoms in each of the following quantities:  a. 10.8 g boron  b. 20.0 g…

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

Q: how many grams of mercury are in 9 moles of mercury ?

A: By using mole concept , number of moles is given as below: number of moles=mass in gMM in…

Q: a. A sample contains 2472 atoms of phosphorus atoms. If each atom of phosphorus has 15 protons, what…

A: Given,Number of phosphorus atoms=2472 atomsNumber of protos in one atom of phosphorus=15

Q: The mass of an atom of hydrogen is 1.673 x 10-24 g. How many atoms are in a 10.5 g sample of…

A: Given, Mass of a hydrogen atom = 1.673*10-24 g. Mass of sample = 10.5g.

Q: A copper ring is composed of 1.45×1023 atoms.1.45×1023 atoms. Calculate the mass of the ring in…

A: The mass of the ring in grams is to be calculated

Q: In a combustion reaction, 46.0 g of ethanol reacts with 96.0 g of oxygen to produce water and carbon…

A:

Q: What mass of ammonia gas (NH3) contains 2.81 ✕ 1024 hydrogen atoms?

A:

Q: A sample of Aluminum foil contains 6.30 x 10^23 atoms. What is the mass of the foil

A: One mole of any substance contains 6.023 X 1023 units of that substance (atoms, ions or Molecules) .…

Q: How many grams does 1.44 x 1028 carbon atoms weigh?

A: To calculate the mass in grams for the atoms  First we have to convert the number of Atoms into…

Q: A sample of aluminum foil contains 7.50 x 1023 atoms. What is the mass of the foil?

A: Given :- no. of atoms of Al = 7.50 × 1023 atoms  To be calculated :- mass of Al foil (in g)

Q: Determine the number of atoms of mercury in a 8.332 g sample of pure mercury

A: First Calculate mole= weight/molar mass Atomicity =1 because Mercury excuse as Hg in nature so 1…

Q: A scientist has two samples of gas: The first sample contains one mole of argon atoms and has a mass…

A: 1 mole of any gas has equal no. Of atoms i.e., avogadro no. of atoms 6.023*1023 atoms. Or Equal…

Q: Rubidium has two naturally occurring isotopes. The average mass of Rb is 85.4678 u. If 72.15% of Rb…

A: Given, Average mass of Rb = 85.4678 u Isotope I, Rb-85 : natural abundance = 72.15 %  relative…

Q: oxygen atoms

A:

Q: The atomic masses of chlorine-35 (75.780%) and chlorine-37 (24.220%) are 34.969 amu and 36.966 amu,…

A: To calculate : average atomic mass of Cl

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: A hydrogen-filled balloon was ignited and 1.70 gg of hydrogen reacted with 13.6 gg of oxygen. How…

A:

Q: A sample of alumminum foil contains 7.5*1023 atoms. What is the mass of the foil?

A: Given : Number of aluminium atoms in the foil = 7.5 X 1023

Q: An unused flashbulb contains magnesium and oxygen. After use, the contents are changed to magnesium…

A: The observation can be explained by the the law of conservation of mass. The law of conservation of…

Q: In an experiment, the reaction of 100.0 g of iodine produced 144.9 g of a compound formed from…

A:

Q: How many grams of oxygen are combined with 94 grams of iron to make the iron(II) oxide compound?

A: Given: Oxygen is combined with iron to give iron(II) oxide. Mass of iron = 94 grams.

Q: What do you look at on the periodic table to determine the number of protons of a element

A: The atomic number of an element tells the number of electrons in it. An element in its neutral state…

Q: A tiny sample of gold contains  1.5 x 10^16 atoms. The mass of the gold sample is ______  μg.

A: Given the number of gold atoms, the tiny sample contains = 1.5*1016 atoms We have to find the mass…

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

A: Introduction: Atomic mass is an average of the masses of a number of different atoms.It is also…

Q: Determine the mass in grams of 7.75 x 1021 atoms of carbon. (The mass of one mole of carbon is 12.01…

A: Given,the mass of one mole of carbon = 12.01 gNumber of carbon atoms = 7.75×1021 atomsHere, we are…

Q: A one carat diamond which is made of the element carbon, weighs 0.200 grams. The average mass of a…

A: Given,1 u = 1.6605 ×10-24 g

Q: How many helium atoms are in 541 kg of helium?

A:

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: Use the following information to determine the mass of chlorine combined with the magnesium to two…

A: Given, mass of crucible = 35.1  mass of crucible and magnesium = 38.92  mass of crucible and…

Q: What is the mass of 4.91x10^21 platinum atoms?

A: Given: Number of platinum atoms= 4.91×1021 we know that Molar mass of platinum=195.084 g/mol

Q: Which sample contains the greatest number of atoms?a) 14 g C                  b) 49 g Cr…

A:

Q: A mole of lithium atoms has a mass of 6.941grams What is the mass of one single lithium atom in…

A: Given,Molar mass of lithium = 6.941g

Q: total mass i

A:

Q: The mass of an average neon atom is 20.2 atomic mass units. One atomic mass unit is equal to…

A: The term atomic mass unit can be defined as the unit of mass which is used to express the atomic or…

Q: If a sample contained 9.65 x 1023 atoms of iodine, how many grams would this be? Round to one…

A:

Q: Calculate the mass of oxygen in a 2.25 g sample of borax

A: Given Mass of Borax = 2.25 g

Q: A newly found element, Savannium, is composed of three different isotopes. In every sample, there is…

A:

Q: If a silver dollar contains 91.0% silver by mass, how many kilograms of silver can be extracted from…

A: As per the given information given silver dollar contains 91.0% silver  here, 1 kg of silver dollar…

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: 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: Calculate the mass in grams of 1 neutron given the following conversion factors: 1 n° = 1.008665…

A: Given  1n0 = 1.008665 amu 1 amu = 1.660538 x 10-24 g

Q: What is the mass in grams of 7.70 × 1014 lead (Pb) atoms? × 10 Enter your answer in scientific…

A:

Q: How many helium (He) atoms are there in (3.74x10^2) g of helium?

A: A number of an atom of an element in the compound = number of moles of the element in compound x…

Q: What is the mass occupied by 2.3 X 10 6Smolecules of Oxygen gas?

A: Number of molecules of oxygen = 2.3×1065 molecules

Q: How many silver atoms are there in 6.74 moles of silver? You will need to divide your answer by…

A: Mole is one of the fundamental unit used to calculate the amount of substance. It is the sixth unit…

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

A:

Q: A 7.57 g sample of calcium carbonate completely decomposes into calcium oxide (lime) and carbon…

A: A chemical reaction is a symbolic representation of the conversion of substances to new substances.…

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.