Perform the calculations required to answer each of the following questions. Pay attention to significant figures. a) What has the greater mass, 3.8 mol of silicon or 5.6 mol of sulphur? b) What is the mass of 3.64 × 1030 atoms of magnesium?

Q: A college chemistry student is performing this reaction in a lab, where magnesium is burned and…

A: When a reaction occurs,  reaction occurs in stoichiometry amounts.  Product is formed with respect…

Q: 7. (NH)2Cr2O7 Element # atoms Atomic mass (g/mol) Total (g/mol) H. Cr Total Molar mass La Display…

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Q: 48. How many molecules of caffeine, C4HSN2O, are there in 18 g of caffeine? a. 1.12 ×10E23 b. 1.05…

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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: Moles In this experiment you will use grains of rice as an analogy for atoms and experience why…

A: The average mass per grain of rice is 0.017932 g. This mass per grain of rice is chosen due to its…

Q: How many iodine atoms are present in 4.10 moles of diatomic iodine? Give your answer in scientific…

A: Given: The number of moles of diatomic iodine=4.10 moles To calculate: The number of iodine atoms.…

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: What is the mass of 3.119 moles of Ca(OH)2? a.  231.1 g b. 462.1 g d. 74.10 g c. 4.209 x 10^-2 g

A: Given, moles of Ca(OH)2 = 3.119 moles. We have to calculate how many grams of Ca(OH)2 are present…

Q: Which sample contains the greatest number of atoms? 54.7 g V 51.2 g Mn 203 g Bi

A: To find number of atom we have to calculate number of moles first. Moles= given mass/molar mass…

Q: Calculate the number of atoms in each of the following masses: a. 54.0 g of aluminum ans: 1.21 1024…

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Q: 10. When copper oxide reacts with hydrogen gas at high temperatures, copper metal and water vapor…

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Q: D. Empty Volume Determination of Aluminum A sample of aluminum weighs 27.0 g and has a volume of…

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Q: what is the mass of 1.08x10^22 molecules of SF6? pls, show how you got it.

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Q: How many grams of Al are in 7.23 x 10²* Al atoms? Enter your answer to the ones place,

A: Convert the number of atoms into moles by using Avogadro Number and then determine the mass in grams…

Q: Give the mass % of carbon in your compound  ___________________18.537956___________ Give the mass %…

A: Let us assume that there is 100 g of a compound. Hence it contains , Mass of carbon = 100 g of…

Q: How many grams of gold (Au; atomic mass = 197.0 g/mol) contains 2.5 x 1020 gold atoms?

A: Number of moles = mass/molar mass  Mass = moles × molar mass  Molar mass of Au = 197.0 g/mol

Q: [Atomic Weights: Zn 65.39 amu S 32.07 amu O 16.00 amu Report Table Express each number to the…

A: (a)Mass of empty crucible = given in data table = 23.578 gram (b) Mass of crucible+unknown = 27.432…

Q: Complete the table below.

A: Since you are asked for multiple elements, we are entitled to solve first three for you.

Q: How many particles are contained in 5.43 moles of carbon? * Type in answers without units, using…

A: Given data: Moles of Carbon=5.43 moles. To find: The number of particles.

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: 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: 3.72 (A) what is the atomic weight of the halogen X? Express your answer using two significant…

A: "Since there are multiple sub-parts in this question and it is not mentioned that which one has to…

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: Complete the table below

A: Since you have posted multiple parts, the answer for first three parts are given below. Kindly…

Q: You have 1 mole of oxygen (O₂) gas and 1 mole of ammonia (NH3). Which has more mass? 1 mole of…

A: We are given 1 mole each of Oxygen gas, O2 , and ammonia, NH3.

Q: Determine the mass (in grams) of aluminum present in 1.07 grams of Al2S3? Do not type units into…

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Q: Show your calculations clearly. Suppose you are provided with a 36.55 g sample of potassium…

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Q: How many atoms are contained in each of the following? (Please enter your answers in scientific…

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Q: 1. 6.02 x 1023 is called a. Avogadro's number. b. Newton's C. Aristotle's d. Planck's mass. 2. The…

A: Avogadro's Hypothesis:- 1 mole of substance = 6.02*1023 particle

Q: If a different nail is coated with a 0.053 cm thick layer of zinc and the surface area of the nail…

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Q: 16. While cleaning your attic, you find your old rock collection. If 74.2% of the rocks have a mass…

A: If a substance is present in more than one form then average mass of that substance given by…

Q: 6. This Magnesium top by ForeverspinTM weighs merely 6g. a) Write the weight of this top in…

A: The question is based on mole concept. We have to determine number of particles present in 6 gram of…

Q: Matter is neither created nor destroyed in a chemical reaction. Thus, the mass of the products of a…

A: As you already know the basics of law of mass conservation and its written over there in the…

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

A: Given that , The charge produced = -1.2 C

Q: A sulfur dioxide gas sample has a volume of 242.62 mL at 242279 pascals and 82.99oF. Calculate the…

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Q: Part B Magnesium makes up 2.10 % by mass of the Earth's crust. How many grams of magnesium are…

A: Mass percent :-  The mass of a component in grams present in 100 grams mixture of all components is…

Q: Determine the number of atoms in 27.0 grams of bromine, Br. (The mass of one mole of bromine is…

A: Given : mass of 1 mole of bromine i.e Br = 79.90 g And mass of Br = 27.0 g

Q: A 1.58 mole sample of a pure unknown substance has a density of 1.87 g/cm3. If the sample occupies a…

A: Given,Density = 1.87 g/cm3Volume = 188 cm3Mole = 1.58 mole

Q: Give the mass % of carbon in your compound  ___________________18.537956___________ Give the mass %…

A: Molecular formula indicates simple number of each atom in a molecular substance

Q: You take three compounds, each consisting of two elements (X, Y, and/or Z), and decompose them to…

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

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: Obtain an estimate for the number of atoms in the universe. Make the following assumptions: (a) All…

A: Atom is the smallest particle (unit of matter) of an element which can exist. Avogadro's number- It…

Q: he mass composition data for two compounds containing phosphorus and chlorine is shown below. Does…

A: we are given the composition of compound 1 and compound 2           PHOSPHORUS(P) CHLORINE(Cl)…

Q: A. Calculations for the Determination of Ammonium Chloride The data from the data entry portion of…

A: Given that, Mass of evaporating dish, w1 = 38.478 g Mass of evaporating dish + original sample, w2 =…

Q: A student used a piece of aluminum that had a mass of 2.583 grams, and treated according to the same…

A: Given:Mass of Al= 2.583 gramsChemical equation:2 Al(s) + 2 KOH(aq) + 4 H2SO4(aq) + 22 H2O(l) → 2 KAl…

Q: Please use the precision of the values in the periodic table link to determine the correct number of…

A: The atomic mass of  He = 4.003 amu The atomic mass of  Fe = 18.998 amu The atomic mass of  Na =…

Mass Spectrometry

This process is an instrumental method in which a sample is changed to fast moving positive ions by electron bombardment. The charged particles vary due to their different mass to charge ratio and are estimated with the help of this difference. It is also called mass spectroscopy.