An oxide of gold thermally decomposes. A. 0.204 g sample of oxide is heated, forming 0.182 g of gold. what is the empirical formula of gold oxide?

Q: 3. A student reacted 0.3000 grams of aluminum with oxygen gas and obtained 0.5333 grams of aluminum…

A: NOTE : The formula you have written in answer of question 3 is incorrect. It will be Al3O4 and not…

Q: There are many minerals which contain silver. A 2.22 g sample of one of these, matildite, is placed…

A: The reaction between silve and magnesium chloride for analysis of Ag in matildite . 2 Ag + MgCl2 → 2…

Q: For the chemical reaction: Fe(NO3)2 + 2 КОН 2 KNO3 + Fe(ОН)2 Which of the following is the correct…

A: Given  Number of mole of Fe(NO3)2  = 3.10 mole mass of potassium nitrate     = ?

Q: What mass of carbon dioxide can be absorbed by 40.8 grams of lithium hydroxide?

A: Given :- mass of LiOH = 40.8 g To calculate :- mass of CO2 absorbed

Q: Mn (s) + 2 CuCl (aq) --> 2 Cu (s) + MNCI2 How many grams of Cu will be produced by 4.4 moles of Mn?…

A: Given reaction,        Mn(s) + 2 CuCl(aq)  →  2 Cu(s) + MnCl24.4 moles of Mn

Q: Arsenic reacts with oxygen to form a compound AsxOy. If 2.354 g of arsenic forms 3.611 g of the…

A:

Q: Mining companies use this reaction to obtain iron from iron ore: Fe2O3(s)+3CO(g) → 2Fe(s)+3CO2(g)…

A: The balanced reaction is given as - Fe2O3(s)+3CO(g) → 2Fe(s)+3CO2(g) The above balanced reaction…

Q: Ammonium phosphate  NH43PO4  is an important ingredient in many fertilizers. It can be made by…

A: Reaction between phosphoric acid and Ammonia . H3PO4 + 3NH3 → (NH4)3PO4   We have , phosphoric acid…

Q: 8. A sample of a compound contains 15.60 g Mg and 10.27 g O. How many g Mg are in another sample of…

A: In the sample of magnesium oxide the amount of magnesium and oxygen is as follows: Mass of Mg =…

Q: A 14.0 g sample of phosphorus reacts with 50.5 g of chlorine to form only phosphorus trichloride…

A: Mole is the amount of the substance that contains the same number of particles or atoms or…

Q: The composition of a mixture of potassium chlorate and potassium chloride is to be determined. A…

A: In this question we want to determine the percent by mass of potassium chlorate.  How we can…

Q: Why is the mole an important unit to chemists?

A:

Q: Using the reaction below and your knowledge of limiting reactants, find what mass of iron(II)…

A:

Q: 100.0 g lead(II) nitrate is reacted with 50.00 g potassium iodide (in plenty of water). How many…

A: The chemical equation for the reaction between lead(II) nitrate and potassium iodide is given as -…

Q: 5. Here is the equation for the reaction between sodium metal and chlorine gas: 2Na + Cl2 2NaCl This…

A: Since you asked question number 5 so, as per Q&A guidelines of portal I solve question 5 for…

Q: What is the molar mass of Ba (SO4)? A. 233.3 grams/mole B.329.3 grams/mole C.185.3 grams/mole…

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

Q: Consider the reaction, 3CCI4+2S6F3>3CCI2F2 + 2S6C13 if 150.0 g of CCI4 (153.8 g/mol) is mixed with…

A:

Q: 5.000 gram sample of hydrated beryllium carbonate, BeCO3·xH2O is heated according to the procedure…

A: To calculate the number of moles of H2O and BeCO3.

Q: 9) Weighed quantities of tin (Sn) and iodine (12) were combined to form an orange solid with unknown…

A: The simplest positive integer ratio of the atoms present in the chemical compound is known as…

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

A:

Q: Write A if only statement A is true; Write B if only statement B is true; Write C if both…

A: Since you have asked a question with multiple subparts, we will answer only first three subparts for…

Q: what is the number of moles of calcium carbonate reacted?

A:

Q: Mole is the term used to express the quantities of substances involved in a chemical reaction. Mole…

A:

Q: Phosphorus trichloride is a liquid with a density of 1.57 g/mL at room temperature.  How many…

A: The given value: Density of PCl3 is 1.57 g/mL Weight of P4 is 5.00 g. Weight of Cl2 is 13.4 g.

Q: Ammonium phosphate NH43PO4 is an important ingredient in many fertilizers. It can be made by…

A: Phosphoric acid H3PO4reacts with ammonia NH3to form ammonium phosphateNH43PO4.  H3PO4+3NH3→NH43PO4

Q: A 3.76 g sample of a compound consisting of carbon, hydrogen, oxygen, nitrogen, and sulfur was…

A: Given: mass of sample = 3.76 g mass of CO2 = 2.12 g mass of H2O = 1.30 g 5.92 g produced 6.07 g SO3…

Q: A cylinder of nitrogen gas (N2) weighs 550 grams. How many moles of nitrogen are present in the…

A: Molar mass of N2 = 28.0 g/ mol

Q: a. If 1.00 g of aluminum hydroxide reacts with 3.00 g of sulfuric acid, what is the mass of water…

A:

Q: g. If the chemical reaction produces 56.2 grams of NH3, then how many moles of N2 gas were needed?…

A: N2+3H2–>2NH3 From this Balanced chemical equation we get that ; 1 mol N2 React with 3 mol H2 and…

Q: 1. A student collected the following data during Lab: Mass of MgCO3 hydrate = 0.9987 g. Constant…

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

Q: gaseous ethane (ch3ch3) will react with gaseous oxygen (o2) to produce gaseous carbon dioxide (co2)…

A: The reaction according to the above condition can be given as: For this reaction, 2 moles of Ethane…

Q: Phosphorus reacts with oxygen to form phosphorus(III) oxide as shown. 4P(s) + 302(g) → 2P203(s)…

A: The details solution for this is provided below in attach image.

Q: Consider the reaction shown below: 6 HNO3 (aq) + Ca3(PO4)2 (s) ⟶ 2 H3PO4 (aq) +  3 Ca(NO3)2 (aq)…

A:

Q: 1) 25.0 grams C to mole 2) 75.0 grams Ne to mole 3) 0.500 mole CO, to grams 4) 4.00 mole H,0 to…

A: The number of moles of compound can be calculated as follows: Moles of the compound=Mass of the…

Q: 4. A student obtains the following data. 25.2246 g mass of clean, dry and empty crucible 25.3372 g…

A: Magnesium ribbon when burnt in air undergoes a chemical change and yields oxide of Magnesium. The…

Q: A balanced chemical equation contains the term "2Ba(OH)2⋅8H2O." How many atoms of each element does…

A:

Q: Balance these chemical equations. (Use the lowest possible whole number coefficients.) (a)    Na2O2…

A: By using Hit & Trial Method , balance the following Chemical equation.

Q: You have a beaker. The mass of the empty beaker is 5.6781 g. You transfer CuCl2 crystals to the…

A: Number of moles can be calculated by dividing mass by molar mass. Number of moles = Mass / Molar…

Q: Upon combustion, a 0.8009 gg sample of a compound containing only carbon, hydrogen, and oxygen…

A: Given data: CxHyOz →CO2+H2O  Mass of sample = 0.8009 g  Mass of CO2 = 1.6004 g  Mass of H2O = 0.6551…

Q: What mass of AgI (234.8 g/mol) can be produced from a 0.4745 g sample that is 53.21% MgI2 (278.11…

A:

Q: A 2.00g strip of Mg is reacted with oxygen inside a flash bulb by pressing the shutter. The strip is…

A: Solution : Given, Mass of Magnesium(Mg)=2.00 g Mass of Magnesium oxide(MgO)=3.32 g The mass of…

Q: A) How many grams of Mgl2 is present in a 0.4745 g sample that is 53.21% Mgl2 (278.11 g/mol)? B)…

A:

Q: A compound containing selenium and fluorine is decomposed in the laboratory and produces 2.231 g Se…

A: wt. Of Se obtained = 2.231 g wt. Of  F obtained = 3.221 g Empirical Formula = To be determined

Q: The chemical Oswegium Patheride's formula is Os3Pa2. Oswegium's (Symbol Os) atomic mass is 10 grams…

A: The chemical formula of Oswegium pantherides is Os3Pa2. Given that, the atomic mass of Oswegium is…

Q: In one sentence explain what's wrong with this equation, and rewrite it so that the coefficients are…

A: Answer:- C3H6(g)   +  4.5 O2(g)   -------> 3CO2(g)   +    3H2O(g) In this equation the…

Q: Phosphorus trichloride is a liquid with a density of 1.57 g/mL at room temperature.  How many…

A: The balanced reaction taking place is given as, => P4 (s) + 6 Cl2 (g) -------> 4 PCl3 (l)…

Q: 1.The compuond cisplatin Pt(NH3)2Cl2 is an antitumor. a)Calculate the elemental percent composition…

A: In problem a) we will find out the mass percentage of elements present in cisplatin and in b) we…

Q: When strongly heated, boric acid breaks down to boric oxide and water. What mass of boric oxide is…

A:

Mole Concept

Mole concept is a method to determine the amount of any substance that consists of some elemental particles using a grouping unit called ‘mole’. The mole concept enables one to handle the large amount of small elementary particles. The mole concept can be used in many calculations related to mole calculation, molar amount, mole ratio, and so on, which are significant in chemistry.