A chemist weighs 50.0 grams of solid NaOH. a) How many moles of NaOH are in the sample? [ Select ] b) How many formula units of NaOH are in the sample? ( Select] 1 mol = 6.02 x 1023

Q: 6.15×1023 KK atoms Express your answer using three significant figures.    How many moles of atoms…

A: We know 1mole = 6.022x1023  So we can easily find the number of moles by using- Number of…

Q: Convert 0.19 moles of carbon dioxide to grams of CO2.

A: Answer: This is question based on mole concept where each mole of the substance has a fixed mass…

Q: For the following reaction, 7.97 grams of nitrogen gas are allowed to react with 1.01 grams of…

A:

Q: 14) The student determined that the reaction produced 0.010 mol of Cu(NO3)2. Based on the…

A: Reactions happening in the reaction mixture are :1 Cus+4HNO3aq→CuNO33aq+2NO2g…

Q: Iron has a density of 7.87 g cm3 . What is the volume (in cubic inches) of an iron sample which…

A: The values are given as follows:

Q: If you have 42.5 moles of glucose (C6H₁206) approximately how many grams do you have? #3

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Q: Mg(s) + 2 HCl(aq) −−−→ MgCl2aq) + H2(g)   given that the mass of magnesium is 0.030 g, find the…

A:

Q: A particular compound is comprised only of the elements C, H, N, and Cl. Combustion analysis of…

A: Given that: Total mass of sample = 14.30 g Mass of CO2 = 31.22 g Mass of H2O = 6.764 g Mass % of N=…

Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Mass of crucible = 26.639 g Mass of crucible + mass of Na2SO4·xH2O = 27.085 g Therefore mass of…

Q: 1-Calculate the mass of compound required to prepare 100.00 mL of a 1.40x102 M CuCl2 ?.

A: Molarity is number of moles of solute present per liter of solution, notated as M and the unit is…

Q: [References] A sample of limestone and other soil materials was heated, and the limestone decomposed…

A: Calcium carbonate decomposes into calcium oxide and carbon dioxide. The equation for the balanced…

Q: un o 8u described in this laboratory. After heating, the sample is found to weigh 2.245 grams. How…

A:

Q: A water solution of sulfuric acid (H2SO4) has a density of 1.864 g/mL and is 73.0% H2SO4 by mass.…

A:

Q: Aqueous sulfuric acid (H₂SO4) will react with solid sodium hydroxide (NaOH) to produce aqueous…

A: First calculate the number of moles for H2SO4 and NaOH. Use that moles to calculate the mass of…

Q: A mixture was found to contain 1.50g NH4CI, 0.80 g NaCI, and 1.20 g SiO2. What is the percentage of…

A: Given: Mass of NH4Cl = 1.50 g Mass of NaCl = 0.80 g Mass of SiO2 = 1.20 g

Q: What amount in moles is 4.77x10^25 (to the power of 25) molecules?? 1.2.87x10^49 mol 2.79.2 mol…

A: Molecules = 4.77 x 1025

Q: Liquid octane (CH₂(CH₂) CH₂) will react with gaseous oxygen (0₂) to produce gaseous carbon dioxide…

A:

Q: A crucible is placed on a balance and is found to have a mass of 26.639 grams a sample of…

A: Since on heating the compound, the mass of water will be lost as it will get vaporised  Hence the…

Q: Hydrogen peroxide H2O2 is commonly used to clean bacteria in scrapes and cuts. It can be used as a…

A: 1 mol of a substance has   6.022×1023 (NA)   atoms/ molecules/ formula units of the substance.Number…

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: Gaseous butane  CH3CH22CH3  will react with gaseous oxygen  O2  to produce gaseous carbon dioxide…

A:

Q: In a particular reaction 8.60g of dinitrogen trioxide gas (N2O3) was actually produced by reacting…

A:

Q: 6) Oxygen gas and hydrogen gas combine to make water according to the following chemical reaction.…

A: Limiting reagent is the reagent which is consumed in the chemical reaction completely. It decides…

Q: Aqueous hydrobromic acid  HBr  will react with solid sodium hydroxide  NaOH  to produce aqueous…

A: Given information,      0.809 g of hydrobromic acid is mixed with 0.55 g of sodium hydroxide

Q: A student uses 0.40 mL of bromobenzene and 0.052 g of elemental magnesium for their Unit 6…

A: Answer is explained below.

Q: [Tutorial: Empirical formula) This question will walk you through the process of calculating the…

A:

Q: 009 (part 1 of 4 chemist measured out 8.25 g of copper(II) romide tetrahydrate (CuBr2 · 4 H2O). How…

A: Molar mass of CuBr2.4H2O=295.4151 g/molNo, of Oxygen atoms present in the molecule =4Mass=4×(16…

Q: A 800 mL sample of nitrogen (N2) was col- lected by displacement of water at 24°C un- der a total…

A: Hii there, since there are multiple questions posted. We are entitled to  answer first question. If…

Q: If a sample of B10H12[N(CH3)3]2 is found to contain 7.48 · 1020 B atoms how many N atoms are…

A: Given: number of B atoms = 7.48×1020 atoms

Q: 5 g of hydrated barium chloride is heated in a crucible until the mass of the sample no longer…

A: Given: Mass of hydrated barium chloride = 5 g Mass of sample after heating = 4.26 g The loss of mass…

Q: . How many moles of Al(C 2 H 3 O 2 ) 3 contain 19mol O ? 6. Determine the % composition by mass of…

A:

Q: 1-Calculate the mass of compound required to prepare 100.00 mL of a 1.40x102 M CuCl2 ?.

A: Molecular weight of CuCl2 = 134.45 g mol-1 Formula Used 1. No of moles = volume × concentration 2.…

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".