. What is the mass (grams) of 2500. carbon atoms?  2.  What is the mass (grams) of 6.52 x 1018 atoms of gold (Au)? Is this the correct answer including the correct labels?

Q: 2.01×1022 HeHe atoms         Express your answer using three significant figures.    How many moles…

A: We have to calculate the number of moles of He

Q: Which one is a FALSE statement? O The chemical formula CuBr2 indicates that this compound is…

A: We have to predict the false statement.

Q: made-up compound: J2(QZ3)2 Determine the number of molecules of J₂(QZ3)2 in 7.2 grams of J₂(QZ3)2…

A: Given -> Weight of J2(QZ3)2 = 7.2 gram  Atomic mass of J = 19.00 g/mole Atomic mass of Q = 35.00…

Q: 1. Which statement best describes molar mass? a. the mass of 6.02 x 1023 atoms, which is constant…

A: The molar mass of a compound is described by the moles concept. According to this concept, one molec…

Q: A 1-carat diamond is pure crystaline carbon and has a mass of 0.200 g.Which contains more carbon…

A:

Q: carbon

A:

Q: The cullinan diamond was the largest natural diamond ever found (january 25 , 1905 25, 1905). It…

A: Use formulas Mole=mass÷molar mass Total atoms=mole×6×1023 MOLAR mass of diamond= 12g/mol

Q: 10) In a round-bottom flask, a chemist completely reacts 4g of hydrogen with 25g of chlorine. What…

A: Since you have asked multiple questions, we will solve the first question for you. If you want any…

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

A:

Q: What is the mass in grams 1.46 x 10^24 of atoms of krypton? a. _____grams b.  How many krypton…

A:

Q: How many O atoms are in 80.4 grams of Al(NO2)3? (The molar mass is 165.01 g/mol.)

A:

Q: a) What is the mass of iron (in grams) contained in 87.14 g of an iron ore which is 80.00% hematite,…

A: Following is the appropriate answer of the given question. Since it is a multiple type questions,so…

Q: A 2.37 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.24 x 1044…

A: Given data,  Mass of nitrous oxide = 2.37 g  Contains 3.24 × 1022 N2O molecules

Q: Which of the following statements is/are correct? atoms of carbon-12 H. A mole of iodine atoms…

A: The statements given are,

Q: Convert 1.28 moles of Pb (OR P b) to grams. Do not type units with your answer. The atomic weight…

A: Given that, The no. Of moles of Pb = 1.28 moles Atomic weight of Pb = 207.2 grams/mol

Q: Sucrose has the molecular formula C12H22011. If a sucrose sample contains 9.0 x 1024 atoms of…

A: Given, Sucrose has the molecular formula: C12H22O11 A sucrose sample contains, Number of atoms of…

Q: a. How many grams of C are present in 3.56 grams of carbon tetrafluoride? Mass = g C b. How many…

A: Mole is defined as mass of substance divide by it's molar mass

Q: A 2.41 g sample of nitrous oxide (an anesthetic sometimes called laughing gas) contains 3.30 x 102…

A: Given: Number of molecules of N2O =3.30×1022 molecules And mass of N2O sample =2.41 g

Q: What is thé mass percentage of C in codeine, C18H21NO3? Provide an answer to two decimal places.

A: Given : We have to calculate mass percentage of carbon in codeine.

Q: Perform the calculations required to answer each of the following questions. Pay attention to…

A: In order to find the element with greater mass, we need to calculate the mass of each element from…

Q: a. How many grams of C are present in 1.76 grams of carbon tetrachloride? Mass= 9 C b. How many…

A:

Q: An unknown compound contains 53.34% rhodium, 9.338% carbon, and the rest is oxygen. a) If you assume…

A: Given a compound with the composition: Rh = 53.34 % C = 9.338 % O = 100 - (53.34 + 9.338) % = 37.322…

Q: A chemical reaction was used to produce 1.61 moles of copper (II) bicarbonate, Cu(HCO3)2. What mass…

A: Given data:

Q: osmium by mass. a) If you assume 100.0 g of the compound, what is the mass in grams of osmium that…

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

Q: An unknown compound has the following chemical formula: Al,Cl where x stands for a whole number.…

A: given formula = Al2Clx

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: CHEMWORK With the advent of techniques such as scanning tunneling microscopy, it is now possible to…

A: The advent of advanced techniques such as scanning tunneling microscopy has revolutionized the field…

Q: STARTING AMOUNT X Determine the quantity of atoms of vanadium in 1.28 grams of vanadium ADD FACTOR…

A:

Q: In 6.9 g of aluminum, there are ______ x 1023 aluminum atoms present

A: Molecular mass of atom contains 6.023 × 10^23 atoms. Molar mass of aluminium is 26.981 g/mol

Q: Convert 3.69 moles of Al (OR A l) to grams. Do not type units with your answer. The atomic weight…

A:

Q: The molecular formula mass of CH2O compound is 60.0 amu. What are the subscripts in the actual…

A: The objective of the question is to find the subscripts in the actual molecular formula of the…

Q: a. How many ATOMS of phosphorus are present in 2.41 grams of phosphorus pentachloride? atoms of…

A: -> number of moles are obtained when weight is divided by atomic mass or molar mass . -> 1…

Q: Determine the mass of 0.0146 mol KOH mass = ___ g Determine the mass of 10.2 mol ethane (C2H6)…

A:

Q: A scientist is trying to discover information about an unknown metal in a compound. The formula for…

A: Step - 1Formula for the compound = XBr3Means in 1 mol of compound 3 mol of Bromine are…

Q: Given these masses of elements found in a sample of a compound: 15.27 grams Ca, 4.57 grams C, and…

A: Given data :

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".