ithout doing any detailed calculations (but using a periodic table to give atomic weights), rank the following samples in order of decreasing number of atoms: 0.50 mol H2O, 23g Na, 6.0 × 10^23 N2 molecules.   How do I do this?

Q: A mixture consisting of 11.6 g of calcium fluoride, CaF2, and 10.8 g of sulfuric acid, H2 S04, is…

A: Calcium fluoride reacts with sulfuric acid to form hydrogen fluoride and calcium sulfate. The…

Q: When I calculate 9.89g of caffeine (C8H10N4O2) into number of atoms I divide the mass by atomic mass…

A: Your calculations are on the right track, but it's important to understand the concept of the mole…

Q: Caffeine, a stimulant of the central nervous system, has the molecular formula C8H₁0N4O2. The molar…

A: Mass of 1 mole = molar mass 1 mole AB contain 1 mole A and 1 mole B

Q: Part 1: Calculate the mass percentage of N in N2O4. Report your answer to 3 significant figures.…

A:

Q: How many moles of Al are necessary to form 38.6 g of AIBR3 from this reaction: 2 Al(s) + 3 Br2(1) →…

A: Answer: 0.1447 Moles of Aluminium (Al) necessary to form 38.6 gram of AlBr3.

Q: he crystalline density of polypropylene is 1.121 g/cm³, and its amorphous density is 0.906 g/cm³.…

A:

Q: If a sample of B10H12[N(CH3)3]2 is found to contain 7.25 · 1019 B atoms how many moles of…

A:

Q: Magnesium hydroxide (Mg(OH) 2), as "Milk of Magnesia" can be used to neutralize excess stomach acid,…

A:

Q: How many H atoms are there in (2.22x10^2) grams of NH3?

A: The answer to the following question is given as:

Q: A 6.7283 g sample of a hydrate of MgSO4 was heated to drive off all of the water of hydration. The…

A: The first step is to calculate the mass of water that was lost when the hydrate was heated. This can…

Q: What is the mass (in grams) of 8.45 x 1023 molecules of dextrose: C6H₁2O6 (molar mass 180.16 g/mol)?

A: Molecular mass of dextrose is 180.16g/molWe have to find mass of 8.45 × 1023 molecules.

Q: A compound containing only C, H, and O, was extracted from the bark of the sassafras tree. The…

A: Given:Mass of CO2 = 167 mg.Mass of H2O = 34.2 mg.Molar mass of CO2 = 44 g/mol.Molar mass of H2O = 18…

Q: Balance the following ng chemical equation (IT ecessary): 10 CSH10(g) + 15 O2(g) → 10 H2O(g) + 10…

A: The question is based on balancing the given equation. we have to systematically balance the atoms…

Q: 12.00 g of a potassium hydroxide, KOH solution is mixed with 40.00 g of lead (II) nitrate, Pb(NO3)2…

A:

Q: How many moles of Ca2+ ions are present in 7.52 · 1020 Ca(OH)2 formula units? Express your answer in…

A: Given : Number of formula units of Ca(OH)2 = 7.52 X 1020

Q: What is the formula weight (in g/mol) of copper(II) nitrate trihydrate, Cu(NO3)2 3H₂O? Give your…

A: For the first question, we have to find the formula weight (in g/mol) of copper (II) nitrate…

Q: How many moles of Al are necessary to form 83.0 g of AIBR, from this reaction: 2 Al(s) + 3 Br,(1) →…

A: For the reaction: 2Al     +   3Br2 →  2AlBr3 2 mol        3 mol         2 mol Given : Mass of AlBr3…

Q: Calculate the mass in grams of 6.12 mole Cu(NO3)2.

A: Solution stoichiometry is mainly based on the calculation of moles and volumes. These two values are…

Q: A grain of sand weighs 7.7 × 10−4 g. How many formula units of silicon dioxide, SiO2, are in one…

A: The mass of one formula unit of SiO2 = 60.08 g/mol

Q: How many moles of H20 can be formed from 6.62 x 10 atoms of NH3 from the following equation? 4 NH,…

A: One mole of any chemical substance contains Avogadro’s number or Avogadro’s constant of atoms in it.…

Q: A chemist weighs 50.0 grams of solid Mg(OH)2. How many moles of Mg(OH)2 are in the sample? How…

A: Given :-  Amount of Mg(OH)2 = 50.0 g  To Calculate :-  No.of moles of Mg(OH)2  No.of formula units…

Q: KC1O3 (s) +P.(s)P0,(s) + KCl(s) (unbalanced)

A:

Q: 2Na + Cl2 → 2NaCl. If I want to make 100.0 g of salt, how much elemental chlorine would I need?

A: First convert mass into molar mass  Then use mole-mole relationship  After getting mole of  Cl2 then…

Q: Mg(s) + 2 NaNO3(aq)  →  Mg(NO3)2(aq)  +2   Na(s)   If 7.112 g of Na(s) are produced in the…

A: The reaction taking place is  Mg(s) + 2 NaNO3(aq)  →  Mg(NO3)2 (aq)  + 2 Na(s) Hence from the above…

Q: Enter your ansTwer in the provided box. One of the reactions that occurs in a blast furnace, in…

A: Given data : Mass of Fe = 1.49 × 103 kg = 1.49 × 106 g Mass of Fe2O3 = 2.38 × 103 kg

Q: Consider a 214.6 g sample of the compound manganese(IV) perchlorate. Using the formula Mn(ClO₄)₄ (MM…

A: The mass of the sample of the compound manganese(IV) perchlorate is = 214.6 g The molar mass of…

Q: What is the total number of hydrogen atoms on the right-hand side of this chemical equation?…

A: Given balanced chemical equation is,a balanced chemical equation: A chemical equation is said to be…

Q: How

A: moles of water = ( molecules of water ) / ( Avogadro number )  Where :  Molecules of water is 2.0 •…

Q: Predict the reactants of this chemical reaction. That is, fill in the left side of the chemical…

A: Step 1:Step 2: Step 3: Step 4:

Q: Calculate the mass percent of 0.389 g of silicon (Si) that reacts with oxygen to form 0.832 g…

A: Given that:  Si = 0.389g and SiO2 = 0.832 g…

Q: of Br2, in grams, is required for complete reaction with 9.56 g of A g Br2 of white, solid Al,Bre is…

A: Given,  Balanced chemical reaction,  2Al + 3Br2 ----> Al2Br3 Mass of Al = 9.56 g Molar mass of Al…

Q: The molar mass of one empirical unit of the antidepressant rolicyprine (C7H&NO) is 122.1 g/empirical…

A:

Q: A 3.06 mg sample of a compound containing carbon, hydrogen, and oxygen underwent combustion…

A: Empirical formula: Formula containing atoms in smallest possible integer ratio Molecular formula:…

Q: What chemical property of potassium chlorate did you use to design a procedure to determine the…

A: Interpretation-  Tell that chemical property of potassium chlorate which we use to design a…

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".