A 5.000 g sample that contained NaCl and BaCl2 2H2O was heated. After heating the sample had a weight of 4.688 g. What is the percent NaCl in the sample?

Q: Molecules of dicarboxylic acid have two carboxyl groups (COOH).A 2.250 g sample of a…

A: percent composition of hydrogen in H2Ofor every 1 mole of H2O there are 2 moles of hydrogen(2 x…

Q: A hydrate of Na2CO3 has an initial mass of 4.31 g before heating and 3.22 g after.      What is the…

A: The initial mass of hydrate of Na2CO3 before heating is = 4.31 g The mass of Na2CO3 after heating is…

Q: How many grams of \(\rm NH_3\) can be produced from 2.42 \({\rm mol}\) of \(\rm N_2\) and excess…

A: The reaction taking place will be  N2 + H2 ------>  NH3  Balancing : Since we have 2 N in LHS.…

Q: 2C2H6 + 7O2 = 4CO2 + 6H2O If we instead had the combustion of propane, C3H8, how many grams of water…

A: Combustion means burning of the substance in presence of air to produce water and carbon dioxide.…

Q: lodine is prepared both in the laboratory and commercially by adding C12(g)C12(g) to an aqueous…

A: Given  2NaI(aq) + Cl2(g)------> I2(s) + 2NaCl(aq) Molecular weight of NaI = 149.89g/mol Molecular…

Q: 101. Copper(II) sulfide, CuS, is used in the development of aniline black dye in textile printing.…

A: The given chemical reaction can be written as,

Q: Turquoise, CuAl 6 ( P O 4 ) 4 ( OH) 8·5 H 2 O(s), is one of the most valuable non-transparent…

A: Calculate molar mass of both hydrated and anhydrous form of the mineral and then calculate the mass…

Q: .07 x 1024 CH4 molecules mol 24.3 g of Cu. mol

A: Interpretation: We have to calculate moles.

Q: sample of an unknown compound containing only carbon, hydrogen and nitrogen is subjected to…

A: We have to find empirical formula of given compound and give its chemical equation of reaction with…

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

A:

Q: If 1.00mol/l of nax contains 4.2% solute by mass, what is the atomic mass of x?

A: Given solution contains 1.00 mol of NaX in 1 L. Again (w/v)% of NaX is 4.2%. Here we have to…

Q: b. 8 HNO3 + 3 Cu 3 Cu(NO3)2 + 4 H2O + 2 NO -> 3.2 g IMoICh 3.29(4x 63. 55 gcu Molar Mass

A: Given: Mass of Cu = 3.2 g Molar mass of Cu = 63.546 g/mol Molar mass of HNO3 = 63.01  g/mol Molar…

Q: For the chemical reaction 2KI+Pb(NO3)2-->PbI2+2KNO3 what mass of lead (ii) is produced from 1.13…

A: Given: Moles of KI = 1.13 g Molar mass of PbI2 = 461.01 g/mol

Q: what mass of cu(io3)2 can be formed from 0.400g of cuso4.5h2o

A: We can determine mass of Cu(IO3)2 formed by considering the balanced equation : CuSO4. 5H2O + 2 HIO3…

Q: A chemist weighs 50.0 grams of solid NaOH. a) How many moles of NaOH are in the sample? [ Select ]…

A:

Q: The complete combustion of a hydrocarbon produced 352 mg of CO2 and 216 mg of H2O. What is the…

A:

Q: 7.50 g of a certain Compound X, known to be made of carbon, hydrogen and perhaps oxygen, and to have…

A: Empirical formula is the formula which is written using minimum ratio of atoms present in the…

Q: balance this chemical reaction            ____C6H12O6   →      ____   C3H6O3

A: Given reaction is, ____C6H12O6   →      ____   C3H6O3

Q: A 5.17 g sample of a compound with the formula CxHyOz is combusted and yields 13.0 g CO2 and 2.29 g…

A:

Q: f 37.0 g of MgSO4⋅7H2O is thoroughly heated, what mass of anhydrous magnesium sulfate will remain?…

A: On strong heating, water molecules get removed and turn hydrated salt into anhydrous salt.The…

Q: How many grams of water could be made from 5.19 mol H2 and 3.86 mol O2?

A: Since you have posted more than one question,we can solve only first question for you. If you want…

Q: A mixture of carbon and sulfur has a mass of 9.0 g. Complete combustion with excess O2 gives 23.3 g…

A:

Q: Propenoic acid, C3H4O2, is a reactive organic liquid that is used in the manufacturing of plastics,…

A: Combustion :- Burning of a compound in excess of air or oxygen is called combustion. Combustion of…

Q: A 125.6 mg sample of an organic compound containing only carbon, hydrogen, and nitrogen is combusted…

A:

Q: Suppose a student starts with 2.4319 g of a sand mixture and separates the components into 1.3012 g…

A: percent of SiO2 in the starting mixture =    =Mass of SiO2 × 100/ Total Mass of the mixture =…

Q: What is the percent NaCl in the sample?

A:

Q: If the reaction N2 + 3 H2 → 2 NH3 is carried out using 1.40 g of N2 and 0.432 g of H2, what mass of…

A:

Q: 4. What is the mass percent composition? Why is it useful?

A: Mass percent of each type of element in a compound is called the mass percent composition of the…

Q: What is the mass of 5.22 x 1021 formula units of sodium hydroxide: NaOH (Mw. 40.00 g/mol)?

A: Mole concept: The number of molecules or atoms present in the one mole of the substance is equal to…

Q: How many moles of Al are necessary to form 71.2 g of AIBR, from this reaction: 2 Al(s) + 3 Br,(1) –→…

A:

Q: True or False? One mole of molecular O2 = 6.02 x 1023 O2 molecules. Mass of O2 in 100g of CO2 =…

A:

Q: How many moles of NaOH are there in 375.0 mL of 2.50 M NaOH?

A: Molarity = Number of molesVolume in liter

Q: . Suppose a sample is 32 mL of water, how many grams of oxygen is present in the sample? 2. How…

A:

Q: The percentage composition of acetaldehyde is 54.5% C, 9.2% H, and 36.3% O, and its molecular mass…

A:

Q: Suppose a student starts with 2.4464 g of a sand mixture and separates the components into 1.3012 g…

A: According to the question, we had a sand mixture consisting of NaClNaCl, CaCO3CaCOX3, and SiO2SiOX2.…

Q: A 0.422 g sample of CaCl2 • 2H2O (molar mass = 147 g/mol) was reacted with 0.644 g of K2C2O4 • H2O…

A:

Q: A 0.45g sample of aspirin is decomposed into its constituent elements and found to contain 0.27g C,…

A: Given: Mass of aspirin sample = 0.45 g. Mass of C produced = 0.27 g. Mass of H produced = 0.020 g…

Q: In order to determine the formula of CoCl.xH;O, a student heated 0.476 g of hydrate. The mass of…

A: First of all we have to calculate the weight of water that goes off after being heated.  Convert…

Q: 8.6 x 10²³ formula units of NaCl is equal to how many moles H?

A: Applying mole concept and avogadro number.

Q: what is the percent of SiO2 in the starting mixture?

A: Percent by mass = (mass of a component in mixture /total mass of mixture) × 100%  Given :- mass of…

Q: 1Na2CO3(aq)  +  2AgNO3(aq) ---->1Ag2CO3(s)  + 2NaNO3(aq)     Calculate the mass of silver…

A: Moles of sodium carbonate and silver nitrate can be calculated as follows:

Q: odine is prepared both in the laboratory and commercially by adding Cl2(g)Cl2(g) to an aqueous…

A: Given, Iodine is prepared both in the laboratory and commercially by adding Cl2(g) to an aqueous…

Q: Which substance contains more carbon by mass, 6.01 g of glucose, C6H12O6 or 5.85 g of ethanol,…

A:

Q: Q1) A sample of limestone (containing calcium carbonate, CaCo,) weighing 438 mg is treated with…

A: Molar mass of CaCO3 = 40 + 12 + 3(16) = 100 g Molar mass of CaC2O4 = 40 + 2(12) + 4(16) = 128 g…

Q: ● Which of the following 100.0-g samples contains the highest percent oxygen by mass? H2O N20 C3H6O2…

A:

Q: ? + {H → 15 ← Oci 8 GT 8 15N+?

A:

Q: 1)_CsHs +, _02 > _CO2 +_H20 6.003g of oxygen, makes how many moles of water?

A:

Q: A lawn fertilizer is rated as 5.90% nitrogen, meaning 5.90 g of N in 100 g of fertilizer. The…

A: The answer is as follows.

Q: When 6.65 g of hydrate NiSO4•XH₂O was heated and the water was driven off and 3.67 g of anhydrous…

A:

Q: d) Determine the percentage composition. 1. C6H13OH 2. KCIO3 3. C2H5OH

A: 4NH3 + 5O2--------->6H2O +4NO The given equation is already balanced.