Mass of magneisum before experiment is 0.33g   mass after is 0.49 g   Calculate the number of moles of oxygen from the mass of oxygen

Q: Calculate the mass if dinitrogen tetroxide that contains a million nitrogen atoms

A: Molar mass of dinitrogen tetroxide is 92.011 g/mol

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A: Radius, r=diameter2=212=10.5 cm volume of spherical baloon…

Q: Get Informed (Explain) The collective counting words above (i.e. pair, tray, ream and case) are most…

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Q: Question 7 17.3 g of oxygen contains O a. none of the above O b.6.51 x 1023 oxygen atoms oxygen…

A: Molecules are made up of two or more than two atoms.We have been asked to choose one option from…

Q: D Question 9 How many moles of oxygen atoms are there in 6 moles of Al2(SO4)3? O 4 12 18 72

A: We have to find the moles of oxygen atoms are there in  6 moles of Al2(SO4)3

Q: Calculate the number of moles in 39 grams of silicon. A 0.72 mol (B 11 mol C) 9.1×10-4 mol D E 1.4…

A: We know  1 mole is equal to the atomic mass in gram of the element . Silicon has atomic number 14…

Q: A compound was analyzed and the following results were obtained: • Molar mass: 270.4 g/mole • Mass…

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Q: What is the molecular mass of Sodium hydroxide given by the chemical formula “NaOH”. Atomic masses…

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Q: Which of the following contains the highest number of atoms? A) 1 mole of helium B) 1 mole of carbon…

A: Given that ,we have 1 mole of helium,carbon and uranium each.

Q: What is the mass of 3.80 moles of waterThe atomic mass of Hydrogen is 1.00 amu and that of Oxygen is…

A: First we need to calculate mass of 1 mole of water using the given atomic mass units.  Then we can…

Q: Calculate the number of oxygen atoms in a sample that has a mass of 288 amu

A: 1 oxygen atom has mass 16 amu or 16 amu is a mass of one oxygen atom. To calculate number of oxygen…

Q: Use the References to The formula for sulfur dioxide is SO2. a. How many molecules are in 2.70 grams…

A: a. Here, we have to find the number of sulfur dioxide molecules present in 2.70 g of SO2. b. Here,…

Q: 21.4 g Ar How many moles of atoms are in each elemental sample?

A: Given  Mass of Ar = 21.4 g

Q: A 9.478 gram sample of iron is heated in the presence of excess fluorine. A metal fluoride is formed…

A: The empirical formula represents the simplest whole number ratio of elements present in a compound.

Q: What formula do you use to answer the question, Hydrogen and oxygen undergo a chemical reaction to…

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Q: 21. How many atoms are there in each of the following? a. 1.50 mol Na b. 6.755 mol Pb c. 7.02 g Si

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Q: Determine the number of atoms in a 3.57g same of carbon

A: Since Carbon (C) is a mono atomic element hence number of atoms of C = moles X Avogadro's number…

Q: Write a balanced chemical equation for the formation of magnesium oxide form magnesium metal  and…

A: When magnesium is burnt in the air, it results in the formation of magnesium oxide.

Q: Q1. If one atom of an element A weighs 6.644 × 10-23 g, then the molar mass in g mol-1 of the…

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Q: ne ave 30.79 ncorrect

A: Dear student I have given answer to your question in the image format.

Q: How many grams of sulfur trioxide must be weighed out to get a sample of sulfur trioxide that…

A: 1)       Molar mass of O = 16 g/mol           mass(O)= 15.8g       use:   number of mol of O,   n =…

Q: Compare a mole of Ag-108 and a mole of Pt-195 usingatoms, protons, electrons, and neutrons.

A: Given; 1 mol of Ag-108 amu. 1 mol of Pt-195 amu.

Q: Which of the following contains the highest number of atoms? A) 1 mole of helium B) 1 mole of carbon…

A: 1 mole = 6.022×1023 = Avogadro's number Anything which is present in the number of 6.022×1023 is…

Q: 1. State whether the following is TRUE OR FALSE. JUSTIFY YOUR ANSWER a. One mole of Calcium has the…

A: ( a.) One mole of Calcium has the same number of atoms but a smaller mass than one mole of sulfur .…

Q: atoms

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Q: Mass of magnesum before experiment is 0.33g  after is 0.49g   Calculate the ratio between the…

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Q: What is the mass of 2.21 mol of C₂H₁0? mass: 58.12 Incorrect g

A: moles of C4H10 = 2.21 molmass of C4H10 = ?Note:molar mass of C4H10 = 58.12 g/mol

Q: A 9.249 gram sample of iron is heated in the presence of excess iodine. A metal iodide is formed…

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Q: Popol learns in his biology class that human body is approximately 9.5% carbon. How many moles of…

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Q: Use the References to access important values if needed for this que a. How many moles of dioxygen…

A: According to Bartleby guidelines we have to answer only one question so please submit different…

Q: How many grams of Zn are there in a sample of Zn that contains 4.33x1023 atoms? grams

A: Using molar mass of Zn, grams of Zn present in a sample of Zn can be calculated.

Q: [Review Topics] [References] Use the References to access important values if needed for this…

A: Mole can be defined as a standard unit for measuring large quantities of very small entities such as…

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.