How many helium atoms are there in a helium blimp containing 534 kg of helium?   Express the number of helium atoms numerically.

Q: Calculate the number of vanadium atoms in a 90.0 g sample of vanadium(V) oxide (V,0,). Be sure your…

A: 1 mole = 6.022×1023 [ Avogadro's number ] The mass of one mole of atoms is called atomic mass  For…

Q: 15. This ForeverspinTM top os made of pure carbon, with an Atomic Mass of 12. This top weights 9…

A: P

Q: A sample of oxygen contains 7.1 x 1020 atoms. How many moles are in this sample? Your answer should…

A: One mole of a substance contains 6.022×1023 particles(atoms/ions/molecules).In this problem,we've to…

Q: carbon

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Q: Calculate the mass in grams of each of the following. Part A.    1.88x1024 atoms of krypton, Kr.…

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Q: This is the chemical formula for talc (the main ingredient in talcum powder): Mg;(Si,O3),(OH); An…

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Q: Calculate the number of hydrogen atoms in a 70.0 g sample of ammonia (NH3). Be sure your answer has…

A: Given: Mass of NH3 is 70.0 g Molar mass of NH3  is 17 g/mol Atoms in 1 mole is 6.022×1023  To find:…

Q: what is the mass in grams of 125 iron atoms?

A: Given that: Number of iron atoms = 125 Atomic mass of iron =  55.845 g/mol

Q: Calculate the mass (in grams) of 4.69 x 1024 carbon atoms.

A: Given : 4.69 × 1024 carbon atoms.  We know 6.022 × 1023 atoms = mass of one mole

Q: A certain organic compound has the formula C8H13O2. A sample of this compound weighs 5.89 grams.…

A: Mass of C8H13O2 = 5.89 g Molar mass of C8H13O2 = 141.184 g/mol Moles of C8H13O2 =MassMolar mass=5.89…

Q: On 12 and 13 I got a negative scientific on one and a positive on the other. Did I make a mistake…

A: General chemistry12. The number of atoms or molecules in a mole of any substance is equal to…

Q: How many grams of CCl4 will contain 36.00 g of carbon? express your answer in decimal notation.

A: Mole of carbon tetrachloride is equal to mole of carbon

Q: How many carbon atoms are present in 5.98 moles of carbon atoms? Give your answer in scientific…

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Q: How many carbon atoms are in 2 dozen molecules of Vitamin D, C56H88O2?

A: Vitamin D ( C56H88O2)  1 molecule of Vitamin D contains 56 carbon atoms.

Q: Aspirin contains 9 atoms of carbon, 8 atoms of hydrogen and 4 atoms of oxygen. The chemical formula…

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Q: Calculate the mass of 3.011 x 10^23 atoms of calcium.  Report your answer to two decimal places

A: First find no. of moles by dividing by Avogadro no. ( NA) then find mass.

Q: Calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetroxide (N,04). Be sure…

A: We have to calculate the number of nitrogen atoms in a 140.0 g sample of dinitrogen tetraoxide…

Q: Provide the chemical formula (including brackets where appropriate) or systematic name for the…

A: Given : Number of molecules of molecular chlorine = 5 x 1023

Q: How many moles does 120.30 g lithium represent? Use correct significant figures and units.

A: The number of moles of an element present in a given amount is calculated by using the following…

Q: Be sure to answer all parts. Enter your answers in scientific notation. Calculate the number of…

A: The compound given is Ca3(PO4)2. Mass of Ca3(PO4)2 given = 9.75 g Molar mass of Ca3(PO4)2 = Atomic…

Q: Calculate the number of carbon atoms in 1.75 g of table sugar, C12H22O11 Express your answer using…

A: mole = (given mass ÷ molecular mass) Molecular mass of sugar C12H22O11 = 342g

Q: How many water molecules does it contain? The density of water is 1.0 g/cm3. A drop of water has a…

A:

Q: How many neon atoms are contained in (6.89x10^2) grams of neon? Use at least two decimal places for…

A: Given -> Weight of neon = 6.89 × 102 gram

Q: Each atom in a crystal of aluminum metal occupies a theoretical cube that is 0.255 nm on a side. If…

A: side of the cube = 0.255 nm = 0.255 x 10-7 cm1nm = 10-7cmVolume of the theoretical cube = (side)3 =…

Q: What is the mass of 1 carbon atom in grams?  What is the mass of one dozen carbon atoms in grams?…

A: The number of moles can be calculated as- n=mMm=n×M where n: number of moles of the atom m: the mass…

Q: How many C atoms are present in the sample of C3H8 with mass 7.11 g? Avogadro's number is 6.022 x…

A: Given : Mass of C3H8 = 7.11 g

Q: What is the mass of 1 carbon atom in grams? what is the mass of one dozen carbon atoms in grams and…

A: Carbon is an important element in periodic table. Its atomic number is 6. It has 4 e-s in outermost…

Q: How many formula units are in 30.912 g of potassium permanganate? Give answer to the correct number…

A: A numerical problem based on formula unit, which is to be accomplished.

Q: How many atoms are there in each of the following substances? 1.88 g Bi Express your answer using…

A: Calculate number of atoms in each element given--

Q: What is the mass in grams of 8.91 × 1016 chromium atoms? Put your answer in box in scientific…

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Q: How many atoms are there in 77.9 g of selenium? You will need to divide your answer by 1.0X10^23

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Q: Calculate the number of oxygen atoms in 1.46 grams of Fe2(SO4)3 1 mole 6.02 x 1023 = Edit Format…

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Q: How many atoms of fluorine are in 1.1E0 moles of CF4? Respond with the correct number of significant…

A: Given, The number of atoms of fluorine are in 1.1E0 moles of CF4 is :

Q: O CHEMICAL REACTIONS Interconverting number of atoms and mass of compound Calculate the number of…

A: Mass of forsterite (Mg2SiO4) = 80.0 g  Number of magnesium atoms = ?

Q: Question attached

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Q: how, many grams of phosphorous are contained in 3.07 x 1027 atoms of phosphorous? Enter your answer…

A: The concept of mole is a conducive way to express the amount of particles. This is a measurement…

Q: A 1.125-gram piece of magnesium was burned in the presence of oxygen, forming 1.866-grams of the…

A: Given : Mass of magnesium burned = 1.125 g And mass of magnesium oxide formed = 1.866 g

Q: How do i Complete the following calculation? Determine the number of grams of Carbon in 3.14 x 1032…

A: To get the number of gram calculate mole then with the help of mole calculate mass.

Q: In a 1.125E2 sample of iron(III) oxide, how many grams of iron are préšěnt? You? number of…

A: Given: The mass of iron (III) oxide = 1.125×102 g. The formula of iron (III) oxide = Fe2O3. The…

Q: How many grams of rubidium are in 3.49 x 1024 atoms of rubidium? Enter your answer in decimal form…

A: 1 mole atoms = 6.023 * 1023 atoms. molar mass of Rb = 85.4678 gmole  and mass of Rb = mole * molar…

Q: What is the mass in grams of 1.20 × 1014 lead (Pb) atoms? X 10 Enter your answer in scientific…

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

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Q: Calculate the number of atoms in 1.02 ×x 10¯º moles of helium. x 10 atoms (Enter your answer in…

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Q: How many atoms of oxygen are in 231.000 grams of lead (IV) oxide? Enter your answer using Canvas's…

A: moles : Mole, also spelled mol, in chemistry, a standard scientific unit for measuring large…

Q: What number of atoms of carbon is in 1.00-carat diamond

A: Number of moles = mass/molar mass  Molar mass of carbon = 12.0107 g/mol  1 mol carbon contains 6.022…

Q: O STOICHIOMETRY Using the Avogadro Number A copper atom has a mass of 1.06 x 10 22 g and a penny has…

A: This question have two subparts. In first part we will determine the mass of 1mol of copper atom and…

Q: Number of OO atoms in 5.25×10−3 molmol Al(NO3)3Al(NO3)3. Express the amount in atoms to three…

A: Given, 5.25×10−3 mol Al(NO3)3

Q: Calculate the mass, in grams, of each of the following.   1.6×1023 gold atoms Express your answer…

A: Number of atoms of different elements are given and from that given data, we have to find the mass…

Q: 5. 3Na,SO, # of molecules: # of elements: Name of element: # of atoms Total # of atoms: The #3 is a…

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Q: How many atoms are there in 11.1 g of sulfur? You will need to divide your answer by 1.0x10^23

A: The number of atoms in a compound is calculated as the product of number of moles and the Avogadro's…

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.