If a sample contained 9.65 x 1023 atoms of iodine, how many grams would this be? Round to one decimal point.

Q: Express your answers to at least 5 significant figures. The mass of one mole of boron is 10.811 g.…

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

A: P

Q: Determine the number of atoms in 55.0 grams of sodium, Na. (The mass of one mole of sodium is 22.99…

A: Here given, the mass of one mole of sodium is 22.99 g. So, in 55 grams of sodium, there are…

Q: what is the mass of carbon in 16.0 g of methane? -please round atomic masses to the nearest tenth.

A: Molecular formula of methane is CH4. Now calculate its molecular mass. Atomic mass of Carbon is 12g,…

Q: An iron atom has a mass of 9.27x10^−23g and a cooking pot has a mass of 0.500kg. What is the mass of…

A: Given: Mass of single iron atom = 9.27 X 10-23 g And mass of cooking pot = 0.500 Kg = 500 g…

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

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Q: b. 3.01 x 1023 atoms of Rubidium c. 8.08 x 1022 atoms of Krypton d. 2.997 x 1025 atoms of Vanadium

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

Q: 2) a) Write formulas for the figures. Dark circles represent element A and light circles represent…

A: Atomic element : Atomic element have single atoms as their basic unit. Molecular element : The…

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

A: Applying mole concept and avogadro number.

Q: Tia has a sample of pure gold (Au). She weighed the sample and the result was 96.896.8 grams. Tia…

A: Formula used: Moles = Mass/ Molar Mass Number of atoms = Moles x Avagadro Number

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: . 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: What is the mass of 4.50 x 1022 cu atoms? Multiple Choice O 747 x 102 amu O 747 x 1029 4.75 g

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Q: Atoms are the smallest spherical particles that make up any matter. If 6.0x10^23 atoms of aluminum…

A: Avogadro’s number is used to determine the number of atoms present in 1 mol of an element.…

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: 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: Which one contains more oxygen atoms? 22 grams of carbon dioxide or 18 grams of water?

A: Given: Mass of carbon dioxide (CO2)=22 g Mass of water (H2O)=18 g To find: which contains more…

Q: A 37.99 gram sample of a hydrate of COCL2 was heated thoroughly in a porcelain crucible, until its…

A: Given mass of the hydrated sample of CoCl2=37.99 grams. Give mass of anhydrous sample of CoCl2…

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: Which of the following is equal to exactly 1 mole of atoms?     6.00 grams of carbon     31.93…

A: According to the mole concept , a mole is a measurement unit of any Substance in which particular…

Q: Show all your work on a sheet of paper to solve the following problem. Full credit is based upon the…

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Q: Circle the best correct answer for the following multiple choice questions: 1) How many aluminum…

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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: 1. How many grams are present in 12 atoms of Potassium? a. 7.8 grams b. 3.91 x 10-22 grams 39.1…

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Q: Do you round before or after multiplying the molecular mass of an element for example I multiplied…

A: Given  Molar mass of Carbon =12.011  Then Molar mass of  C12 =?

Q: What mass of ZnCO3 contains 3.11x1022 O atoms?

A:

Q: A 2.62 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.59 x 1022…

A: Given  (a)   Mass = 2.62 gram       Number of molecule of N2O  =  3.59 × 1022 molecule       Number…

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: - Compare Two compounds that contain copper and chlorine have the following masses: Compound A:…

A:

Q: If a compound is made up of carbon and hydrogen only, what is the mass of its sample that contains…

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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 protons are in 2.08 x 10-21 g of F?

A: Atomic weight of F = 19 Given is Mass of F= 2.08 x 10-21 g Number of moles= given mass/ molar mass…

Q: What is the mass of magnesium fluoride that contains 7.29 × 1024 F atoms?   Relative atomic…

A: Given,  The mass of magnesium fluoride that contains 7.29 × 1024 F atoms is:

Q: A 2.37 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.24 x 1022…

A: Given that : The mass of N2O sample = 2.37 g Number of molecules of N2O = 3.24 x 1022

Q: How many atoms are contained in a block of aluminum metal measuring 6.0 mm x 5.0 mm x 15 mm? The…

A:

Q: How many protons and electrons are there in a neutral atom of each of the following elements? Part A…

A: The atomic number of an element tells about the number of electrons and protons present in an…

Q: 1. Determine the number of atoms in 0.475 g of palladium (Pd). atoms 2. Determine the mass of 139…

A: One mole of any element contains approximately 6.022 x 1023 atoms of that element. Therefore, to…

Q: Determine the mass of 5.0x10^23 tungsten (w) atoms

A: One mole of any substance will have 6.023× 1023 . Therefore number of moles in 5.0× 1023 atoms,…

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

A:

Q: re the masses of C and H ( in grams)? (MM C = 2.01 g/mol, MMH = 1.008 g/mol) (A) 55.19 g and 10.81 g…

A: Theoretical yield = actual yield/% yield

Q: How many total atoms are there in 84.9 g of methane ( CH4 )?

A:

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

A: Calculation of the mass of 1 atom of aluminium in picograms:

Q: Find the mass of 1 molecule of NH3 in gram. a. 2.82 x1023 b. 17 C. 10 d. 2.82 x1023

A: We know that 1 mol of any substance contains Avogadro's number of molecules or atoms i.e 6.023 ×…

Q: which compound contains about 40% carbon by mass? A pure sample of an organic molecule has the…

A: Considered that the compound contains only 1 carbon atom then the molar mass of the compound must be…

Q: Gallium Arsenide has a density of 5.32g/cm3 and the chemical formula GaAs. A GaAs piece has a volume…

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Q: Find the mass of 1 molecule of NO in gram. а. 4.98 х10-23 O b. 30 О с. 15 O d. 4.98 x1023

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Q: What is the mass of 1.6 x 1021 neon atoms?

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Q: Why would the collective mass of twenty pennies not be equal to ‘20 x’ the mass of any individual…

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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.