A student weighs a 0.0103 g0.0103 g sample of magnesium metal. How many moles of magnesium does the sample contain?

Q: 12) SEP Apply Mathematical Concepts This equation shows the formation of aluminum oxide, which is…

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Q: What is the gravimetric factor when the desired substance is Cr203 and the weighed substance is…

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Q: compound has the composition: carbon 37.21%; hydrogen 7.83%; and chlorine 54.96%. If its MW is 385…

A: Since you have posted multiple questions, we will solve the first one for you. For the rest to get…

Q: ven the reaction of hydrogen and chlorine gas is calculate the moles of hydrogen the reactive…

A: Given reaction is H2g+Cl2g→2HClg To calculate the moles of hydrogen required to produce 4.80 mol of…

Q: Each step in the following process has a yield of 80.0%. CH, +4CL, + CCI, + 4HCH CCI, +2 HF =→…

A: The reactions given are, Given: Percent yield of both steps = 80 %. Moles of CH4 reacting = 5.5…

Q: If 2.88 moles of AlPO4 were needed for a reaction what mass of AlPO4 would need to be measured out

A: The moles of AlPO4 is = 2.88 moles The mass of AlPO4 in grams is =?

Q: 0.126 mole of lithium weighs

A: Given,Moles of lithium = 0.126 moleRequired,                  Weight of lithium .

Q: Use the following reaction to complete the question: 1 N2 + 3H2 -> 2NH3  3 moles of nitrogen would…

A: N2+3H2->2NH3 Moles of nitrogen =3 moles Moles of hydrogen=?

Q: 1. N, + 3H, - 2NH, How many moles of hydrogen are needed to completely react with two moles of…

A: The question is based on the concept of reaction Stoichiometry. we have been given balanced…

Q: Enter your answer in the provided box. Use the balanced equation, N, + 02 2 NO, to answer the…

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Q: CaO(s) + 2 NH,Cl(s) → 2 NH3(g) + H,O(g) + CaCl, (s) In an experiment, 25.9 g of ammonia gas, NH, ,…

A: Given :-  CaO(s) + 2NH4Cl(s) →2NH3(g) + H2O(g) + CaCl2(s)  mass of NH3 produced in this reaction =…

Q: How many grams of NBr3 can be made from  2.22 x 10-2 moles of Br2 ?  N2   +   3 Br2   →   2 NBr3…

A: Write down the given reaction N2 + 3Br2 ----> 2NBrccording to the stoichiometry 2moles NBr3 is…

Q: A chemist decomposes samples of serveral compounds; the masses of their constituent elements are…

A: The empirical formula of a compound depicts the simplest ratio by which the elements are present in…

Q: How many grams of NBR3 can be made from 2.22 × 102 moles of Br2 ? N2 + 3 Br2 2 NBr3 + 44.0 kJ

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Q: When magnesium is heated in air, it reacts with oxygen to form magnesium oxide. suppose a piece of…

A: Given,Mass of magnesium oxide = 1.30gThe mass of magnesium used to form 1.30g of magnesium oxide is…

Q: 1.08 g Epsomsalt (or hydrated magnesium sulfate)is heated,and 0.57g of dried Epsom…

A: Given: 1.08 g Epsomsalt (or hydrated magnesium sulfate)is heated and 0.57g of dried Epsom…

Q: Reaction B: Sodium Carbonate and Hydrochloric Acid Experimental Data 51.368 g (a) Mass of…

A: Given that,  Mass of sodium carbonate used = 0.309 g Molar mass of sodium carbonate = 105.99 g/mol…

Q: A cereal contains 11.0 grams of sucrose (C„H0,) per 60.0 grams of cereal 22 How many grams of cereal…

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Q: Determine the moles of H, produced when 3.34 moles of HCI reacts with Mg according to the following…

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Q: Indicate the mole ratio between each of the reactants. USE: 2 H, + 1 0, → 2 H,0 moles H, moles O2…

A: In a chemical reaction, two or more reactants react with each other to form new substances. This new…

Q: Change the 160g of NaOH to moles step by step

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Q: determine the following for the reaction: 2mg(s) + o2(g) ----> 2mgo a. determine the number of…

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Q: 58.5 gms of NaCl contains O 1 gm mole of NaCl O 1 lb mole of Nacl O 1 kg mole of NaCl O all of the…

A: Answer       Mole = mass in gm / molar mass     Mole  = 55.8/…

Q: Conversions from moles to molecules involve how many steps? A. 1-step because 1 mole = 6.02X10^23…

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Q: Consider the reaction: 3Ba(s)+N2(g)→Ba3N2(s)3Ba(s)+N2(g)→Ba3N2(s). Part A: How many moles of barium…

A: Part A: How many moles of barium metal react to produce 0.220 mol of barium nitride?…

Q: How many moles of sodium hydroxide are needed to neutralize 1.44 moles of sulfuric acid?

A: Given :- No.  of moles of H2SO4 = 1.44  To calculate :- No. of moles of NaOH     When an acid reacts…

Q: Hydrogen gas burns in the presence of oxygen gas to produce water vapor: 2 H2 (g)  +    O2 (g)…

A: Applying concept of limiting reagent and mole concept.

Q: Use the following UNBALANCED equation:____ N2 + ____ F2 -->____ NF3. How many moles of nitrogen…

A: The balanced equation is N2 + 3F2 -----> 2NF3

Q: 4NH3(g)+5O2(g)---->4NO(g)+6H2O What is the mole-mole factor (ratio) of O2 to H2O?

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Q: Consider a flask containing a 254 g sample of carbon dioxide? Determine (a) number of moles of…

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

Q: 1 mol of H2O contains 1 mol of hydrogen atoms and one mol of oxygen atoms. True or false? Why? 1…

A: The molecular formula of water is H2O  Hence it means that each molecule of H2O is made up of 2…

Q: Mg(s) + 3 N2 (g) --> 2 MgN3 (s) How many grams of N2 will be used to produce 85.5 moles of MgN3?

A: We have given that   The balance chemical equation :    2Mg(s) +  3N2(g) -------> 2MgN3(s)

Q: the reaction C2H4 + 3O2 ---> 2CO2 + 2H2O, does this mean that ten (10) grams of CO2 produced reuired…

A: C2H4 + 3O2 ----> 2CO2 + 2H2O Mass of  CO2  = 10 g Number of moles of CO2= 10g ÷ 44g/mol = 0.227…

Q: Nitrogen monoxide reacts with oxygen according to the following reaction: 2NO(g) + O2 (g) --->…

A: The chemical equation is as follows:

Q: Consider the reaction: 2Na + 2H2O --> 2NaOH + H2 How many moles of hydrogen gas are produced when…

A: The balanced reaction taking place is given as, => 2 Na + 2 H2O -----> 2 NaOH + H2

Q: Refer to the following equation:   4NH3(g) + 7O2(g) = 4NO2(g) + 6H20(g) How many moles of ammonia…

A: Given balanced equation is-  4NH3 (g) + 7O2 (g) → 4NO2 (g) + 6H2O(g) We will first determine which…

Q: Moles are the fundamental unit of chemistry. Why are moles so important? Please comment on molecular…

A: The amount of any substance is measured in a unit known as a mole which is equal to 6.023 x 10^23…

Q: According to the following reaction, how many moles of hydrogen gas will be formed upon the complete…

A: Balanced equation is                                                        H2O(l)          -->…

Q: When N2O5 (g) is heated it dissociates into N2O3 (g) and O2 (g) according to the reaction: N2O5 (g)…

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Q: 1. If the waste you have contains 100.0 grams of silver nitrate, how many mols of silver nitrate is…

A: The relation between mass and number of moles of any substance is given by - Number of moles =…

Q: 450 g of H2O is decomposed to form H2 and O­2 gas. a. Write the skeleton equation for the reaction…

A: In the given reaction 450 g of water is decomposed to form H2 and O2 gas.

Q: If a test tube has 2 moles of a blue liquid and a different test tube has 2 moles of a red solid…

A: Given: Moles of blue liquid in test tube 1 = 2 mol. And moles of red solid in test tube 2 = 2 mol.

Q: A student is trying to figure out how many moles of potassium chloride are made from 4.0 grams of…

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Q: If 5.85 moles of CaCO3 are used in an experiment, how many moles of carbon dioxide are create CaCO3…

A: Calcium carbonate decomposes into carbon dioxide and calcium oxide. The balanced reaction is -…

Q: What is the gravimetric factor when the desired substance is Cr203 and the weighed substance is…

A: Molar mass of PbCrO4  =323.19g/mol Molar mass of Cr2O3  =151.99/mol

Q: C3Hg(g) + 502(g) 4H20(g) + 3CO2(g) If 211 g of propane (C3H8) is burned, find the mass of carbon…

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Q: How many moles of sulfur atoms are present in a sample that contains 2.14 moles of disulfur…

A: 1. Given :-   number of moles of sulfur decafluoride = 2.14 mol  To calculate :  number of moles of…

Q: Given that 4 NH3 + 5 O2 ----> 4 NO + 6 H2O, when 4.50 mol of H2O are formed, the amount of NO formed…

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Q: 2NO(g) + 0,g) - 2NO, (3) In one experiment, 0.861 mol of NO is mixed with 0.500 mol of O,. Determine…

A: Given :-  2NO(g) + O2(g)  -----> 2NO2(g)   Number of moles of NO = 0.861 mol Number of moles of…

Q: Mass of aluminum (g): 0.25g Mass of alum crystals (g): 0.27g 1. Using your starting mass of…

A: Answer: To calculate theoretical yield, we will use the given molar ratio and by equating the ratio…

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.