How many atoms are contained in 4.1 g of carbon? How can you round this answer to 2 significant figures?

Q: How many molecules of sulfuric acid are in 5.00 g of sulfuric acid? Write your answer with the…

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Q: What is the % by mass of a silver ring that has a mass of 12.0 g and contains 11.1 g pure silver?

A: Mass percentage of a compound represents the mass of solute present in a given mass of compound. It…

Q: . The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8…

A: Given: Density of water = 0.967 g/mL. Volume of water = 499.8 mL.

Q: What is the mass in grams of 0.485 moles of barium (Ba)? Enter your answer in decimal form with…

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Q: Calculate the number of hydrogen atoms in a 50.0 g sample of camphor (C10H160). Be sure your answer…

A: In this question, we have to find out the correct answer of given problem by the help of the…

Q: A chemist determined by measurements that 0.015 moles of gallium participated in a chemical…

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Q: Calculate the number of hydrogen atoms in a 150.0 g sample of camphor (C10H160). Be sure your answer…

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Q: There is one mole of water in the beaker.  A student measured the weight of the 1 mole of water of…

A: Molar mass: The molar mass of an element or compound is defined as the mass of one mole of that…

Q: The density of water at 4.00°C is 0.967 g/mL. How many molecules of water are present in a 499.8 mL…

A: Given: Density = 0.967 g/mL Volume = 499.8 mL The Mass of water =   Density of water x volume Mass…

Q: The number of particles in 1 mole of hydrogen gas is __________. Express your answer using three…

A: Given : Moles of Hydrogen gas i.e H2 gas = 1 mol.

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

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Q: A chemist determines by measurements that 0.075 moles of bromine liquid participate in a chemical…

A: Given value -  Moles of Br2 = 0.075 moles, Molar mass = 159.808 g mol-1  Then,

Q: An oxygen atom has a mass of 2.66×10 -23 g and a glass of water has a mass of 0.050 kg. Use this…

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Q: 1. What is the sum of 89.332 g and 1.1 g? a. 90.4g b. 90.432g C. 90.0g d. 90.43g

A: The significant figures of a given number are those significant digits, which express the meaning…

Q: Ammonium phosphate ((NH4),PO4) is an important ingredient in many fertilizers. It can be made by…

A: The balanced chemical equation for the reaction between phosphoric acid and ammonia is as follows:…

Q: Calculate the mass of 0.11 moles of Cu(NO3)2. grams Give your answer to 2 decimal spaces.

A: Given that , No. Of moles of Cu(NO3)2 = 0.11 moles

Q: The chemical formula for diethyl amine is: (CH,CH,),NH Calculate the molar mass of diethyl amine.…

A: To calculate the molar mass of diethylamine.

Q: The density of water is 1.00 g/mL at 4 degrees Celsuis. How many water molecules are present in 2.56…

A: We are having 2.56 ml waterSo , 2.56 ml  x1.00g1 ml=2.56 gno of moles water in 2.56 g=2.56 g18.015…

Q: How many moles of carbon are in 2.2x1027 atoms of carbon? Round your answer to 1 decimal place.

A: Given data Number of atoms of Carbon = 2.2x1027 atoms Avogadro's Number is NA=6.02×1023 atommole

Q: An aluminum atom has a mass of 4.48 x 10 g and a small airplane has a mass of 5000. kg. Use this…

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Q: A chemist determines by measurements that 0.035 moles of hydrogen gas participate in a chemical…

A: Given,  Moles of hydrogen gas participate = 0.035 mol.  The mass of hydrogen gas participate is:

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: What is the mass of one atom of gold (Au)? How would you write this answer to significant figures?…

A: Atomic mass of gold is 196.96655 g/mol.

Q: Calculate the mass in grams of carbon in a 1 carat diamond that contains 1.32x1022 atoms of carbon.

A: Given the number of C atoms present in the 1 carat diamond = 1.32*1022 atoms We have to convert the…

Q: Calculate the mass % of "S" in CS2. Round-off your answer to two significant figures and enter the…

A: Atomic mass of S = 32.06 g/mol Atomic mass of C= 12.01 g/mol Molecular mass of CS2 = 12.01 +…

Q: How many moles Fe(OH)3 are there in 229 g of Fe(OH)3? Round your answer to 2 decimals.

A: Given mass of ferric hydroxide (Fe(OH)3 ) is  229 grams.

Q: Calculate the number of hydrogen atoms in a 90.0 g sample of camphor (C10H160). Be sure your answer…

A: Given  Maas of camphor= 90.0 g We know that,  Number of moles = mass/ molar mass Number of moles of…

Q: The density of water is 1.00 g/mL at 4 degrees celsius. How many water molecules are present in…

A: The formula for density calculation is,

Q: What is the mass in grams of 9.35 x 1024 molecules of CO2 ? Please express in decimal form, not…

A: Given- Molecules of CO2 = 9.35 x 1024 To find - Mass of CO2 in grams

Q: How many oxygen atoms are in 9.00 g of AI2(SO4)3? Also use 2 decimal places.

A: This question involves calculation for the number of atoms present in 9.00 g of AI2(SO4)3 . For…

Q: How many moles of Ca are there in 913 grams? Answer in decimal notation, without units, to 3…

A: • The values provided in the question are:-    i) Mass of Calcium = 913 g  ii) Molar mass of…

Q: Ammonia (NH,) chemically reacts with oxygen gas (0,) to produce nitric oxide (NO) and water (H,O).…

A: We have to calculate the mass of NO produced.

Q: How many molecules are in 2.50 moles of CO2? (please provide your answer with units, in scientific…

A: Given:         No of moles of CO2 =2.50  we know that,      No of molecules in 1 mole of substance…

Q: Calculate the number of oxygen atoms in a 150.0 g sample of scheelite (CaWO4). Be sure your answer…

A: Number of Oxygen atom in 150g CaWO4 can be calculated as follows

Q: Calculate the number of hydrogen atoms in a 80.0 g sample of camphor (C10H160). Be sure your answer…

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Q: 2.3E23 molecules of sugar (CH120,) would weigh how many grams?

A: The moles are the unit of the substance and it is explained as 6.022×1023 atoms/molecules/ions. It…

Q: You wish to prepare 202 grams of 11.8 % Ba(OH)2. You will need _____ grams of barium hydroxide and…

A: Given:  Weight of solution = 202 gm  % by mass = 11.8 %  Density of water = 1.00 g/ml

Q: What mass of copper(I) phosphate contains 3.20x1023 oxygen atoms? Provide your answer in decimal…

A: Chemical formula : Cu3(PO4)2  Given, Atoms of Oxygen = 3.20 x 1023 atoms. Molar mass  : 380.58 g/mol…

Q: Calculate the number of oxygen atoms in a 140.0 g sample of iron(III) oxide (Fe,03). Be sure your…

A: Given, Mass of iron (III) oxide (Fe2O3) sample = 140.0 g Number of oxygen atoms in a 140.0 g sample…

Q: If you have 152 g of glucose (C₆H₁₂O₆), how many moles are present? Use the correct number of…

A: Given: Mass of glucose (C₆H₁₂O₆) = 152 g Molar mass of glucose = 180.156 g/mol

Q: Calculate the number of gold atoms in a 150.0 g sample of gold(III) chloride (Au,Cl,). Be sure your…

A: Given-> Weight of Au2Cl6 = 150.0 gm

Q: 5) A student measures 10.5 mL of diethyl ether using a glass syringe. Given that the density of…

A: The question is based on the concept of physical chemistry. We have to calculate moles of ether…

Q: Vitamin B12, cyanocobalamin, is essential for human nutrition. Its molecular formula is…

A: The ratio of mass of the substance to the number of moles of the substances is known as molar mass.…

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Q: grams

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Q: grams of F are in 255 g CaF2?

A: Given: 245 g CaF2  Calculation of amount of fluorine:

Q: A chemist adds 455.0 mL of a 5.23 mol L silver perchlorate (AgC10,) solution to a reaction flask.…

A: Volume of solution = 455.0mL. Molarity of solution = 5.23mol/L.

Q: Calculate the number of oxygen atoms in a 80.0 g sample of dinitrogen tetroxide (N,04). Be sure your…

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Q: A chemist determines by measurements that 0.095 moles of bromine liquid participate in a chemical…

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Q: A chemist weighed out 3.51g of calcium. Calculate the number of moles of calcium she weighed out.…

A: Solution stoichiometry involves the calculation of concentration of solutions in the given…

Stoichiometry

Stoichiometry is a chemical division that evaluates the quantitative content of the chemical process with the help of the reacting molecules or products taking part in the reaction. The term “stoicheion” in “Stoichiometry”, is an old Greek term for "element" whereas “metron” means "measure".