0.455g of magnesium reacted with 2.315g of oxygen and 0.755g of magnesium oxide was obtained. Determine the mass of magnesium in a 0.500g sample of magnesium oxide.

Q: If 26.2 grams of carbon (grapefruit) and 69.8 grams of oxygen combine to form carbon dioxide, how…

A: The reaction of Carbon and Oxygen to form carbon-di-oxide is--------------- C + O2 → CO2 So 1 mole…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Here we are required to find the percentage of anhydrous copper chloride

Q: If you have a sample of 0.3154g of air and air is 78.0% nitrogen, by mass, what is the mass of…

A:

Q: From the given data below, calculate the % ash of the sample. Weight of the empty container: 16.8967…

A: The mass % is equal to the ratio of mass to the total mass of the substance multiplied by 100. The…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A: Given,  Formula of hydrate copper(II) chloride = CuCl2.xH2O Mass of crucible = 16.221 gMass of…

Q: 23. Ammonia is synthesized from hydrogen and nitrogen. N2 (g) + 3 H2(g) - -> 2 NH3 (g)lf 5.00 L of…

A: Given that: N2(g) + 3H2(g) ....> 2NH3(g)  Volume of N2(V) = 5.00L T = 298 K P = 3.00 atm

Q: Sodium metal and water react to form hydrogen and sodium hydroxide. If 11.96 g of sodium react with…

A: Alkali metals react with water vigorously to form metal hydroxide and hydrogen,General reaction,M(s)…

Q: 13. When 28.0g of carbon monoxide is analyzed, it if found to contain 12.0g of carbon and 16.0g of…

A: In 28g of CO, that is 1 mole of CO contains one mole of C and one mole of O; in 375.0g of CO, 13.4…

Q: Complete combustion of 16 liters of gasoline consisting of a mixture of heptane gas (C7H16) and…

A: Recall the reaction for complete combustion of a mixture of heptane and isooctane.       C7H16 +…

Q: A 69.56 g sample of SOCI2 reacts with 13.93 g of CO2 to form SO2 and CCI4. 2 SOCI2 (1) + CO2 (g)…

A:

Q: Given the data below calculate the mass of water in the original sample: Mass of empty beaker…

A: Given values-> Mass of empty beaker =27.3894 gm Mass of beaker + Mass of compound = 30.2200 gm…

Q: (1) CIO(g) + O3(g) - (2) 203(g) 30,(g) (3) 0,(g) + CI(g) → Cl(g) + 20,(g) AHxn = -122.8 kJ AHan =…

A:

Q: A 25.3-g sample of an unknown compound contains 0.8 g of oxygen. What is the percent by mass of…

A: Percentage by mass is defined as the ratio of the mass of a substance to the mass of the solution…

Q: Calculate the number of Argon atoms necessary to exactly cover a “metric” football field witha layer…

A: Area of the football field =100.0 m × 50.0 m=5000 m2

Q: Oil spreads on the water to form a film 110nm thick. How many square kilometers(Km²) of the ocean…

A: The oil and water are two immiscible liquids which means that the oil cannot be dissolved in water.…

Q: student performs Experiment 7 using copper wire as the initial copper source and obtains the…

A: Given mass of dry beaker is 120.4265 g  Given mass of dry beaker + copper wire is 122.4715 g  After…

Q: 6.35 x10 to the 22nd power molecules of H2SO4 then how many grams of H

A: Number of mole and number of particles are related to each other as follows:Where, NA is avogadro’s…

Q: Janet is in the lab performing her favorite experiment.  She takes 125. grams of zinc and reacts it…

A: 1 mole of hydrogen = 22.4 L gas = H2 molar mass Density = weight/volume mole = weight/molar mass

Q: 6 grams of nitrogen reacts with how many grams of hydrogen to produce 21 grams of ammonia?

A: Given : Mass of nitrogen i.e N2 reacting = 6 g. And mass of ammonia i.e NH3 produced = 21 g. Molar…

Q: 1.58g of magnesium hydrogencarbonate was added to a 1.68 mol/L solution of acetic acid, CH3COOH in…

A:

Q: A sample of a gaseous binary compound of boron and chlorine weighing 2.842 g occupies 0.153 L. This…

A: The number of atoms of boron and the number of atoms of chlorine in a molecule of this compound has…

Q: A sample of 508.4 g of copper completely reacted with oxygen to form 572.4 g of a copper oxide…

A: Given : Mass of copper reacted = 508.4 g And mass of copper oxide produced = 572.4 g

Q: Magnesium will burn in air to form both Mg;N2 and MgO. What mass of each product would be found if…

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Q: A sample of a compound has a mass of 41.13g. The sample is found to contain 37.28 g of carbon and…

A: Answer: option 2) 90.6% Carbon and 9.4% Hydrogen

Q: It takes 3.500 in³ of mercury to make one manometer. Find the price of the mercury used to make 19…

A: As you have not provided the cost for Mercury , So here I will be taking a sample cost of 100 to…

Q: A chemist adds 1.75 L of a 2.80 × 10 -5 mol/L mercury(II) iodide (Hgl,) solution to a reaction…

A: The concentration of any solution can be given by its molarity, molality and normality. The molarity…

Q: Carbon tetrachloride, CCl4, was a popular dry-cleaning agent until it was shown to be carcinogenic.…

A: 1 mole = 6.022×1023 (Avogadro's number)  The mass of one mole of molecules of a substance is known…

Q: 2 H2 (g) + O2 (g) -> 2 H2O (g) a. How many moles of water are produced if 32.8 L are collected?…

A: In a chemical reaction by the help of stoichiometric coefficients we can find the unknown amount of…

Q: Zinc ore (rock) is treated with sulfuric acid producing a solution with undissolved zinc ore and…

A: Density of H2SO4 = 1.153 g/mL Volume of H2SO4 = 50.0 ml  mass of H2SO4 =  Volume x density = 50.0 ml…

Q: The mass of the original mixture was 2.03g. The combined mass of the salt and the evaporating dish…

A: Since you have posted a question with multiple subparts, we will solve only the first 3 subparts…

Q: Solid copper(II) chloride forms a hydrate of formula CuCl2 ⋅ xH2O. A student heated a sample of…

A:

Q: What is the unit of energy? Select one: a. Joules b. Newton c. Kilograms d. moles

A: What is the unit of energy?

Q: You have two distinct gaseous compounds made from element X and element Y. The mass percents are as…

A: For easy calculations in the above question, let us consider one unit of compound A is 100 grams and…

Q: 0.848g of Na2B4O7.10H2O into a crucible. After hearing the sample for a short time and allowing the…

A: Na2B4O7.10H2O is known as borax.It is a hydrated crystal having 10molecules of water of…

Q: Magnesium will burn in air to form both Mg3N2 and MgO. What mass of each product would be found if…

A: Given,  Magnesium will burn in air to form both Mg3N2 and MgO.…

Q: Liquid heptane, C,H,6 , burns in oxygen gas to yield carbon dioxide and water. What mass of carbon…

A:

Q: is heated with 1.80 gof bromine. All the bromine is used upj and 2.07 g of magnesium bromide is the…

A: Massof magnesium remains unreacted = 6.856g

Q: You wish to prepare 237 grams of 26.7% (w/w) KI. Assume that the density of water is 1.00 g/mL. You…

A: Given: mass of KI = 237g density of water = 1g/ml Weight of water =  density x mass concentration =…

Q: C3H60(1) + 4 02(g) -> 3CO2(g) + 3H20(g) Using 79.63 grams of acetone, how many grams of steam can be…

A:

Q: In a reaction, 33.4 g of chromium(III) oxide reacts with 11.9 g of aluminum to produce chromium and…

A: The reaction taking place is between chromium (III) oxide i.e Cr2O3 and aluminium i.e Al to produce…

Q: Perform the following mathematical function. 51.11 + (0.97/2.414 × 0.32150 × e.-3.25) + 1.52444 3.4…

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Q: T26 What is the density of argon gas at STP? Select one: a. 0.562 g/L b. 1.78 g/ml c. 0.562 g/ml d.…

A:

Q: A student performed an experiment of heating a hydrate and obtained the following data.    the mass…

A: Mass of the empty crucible =17.556g -----Equation A Mass of crucible and a hydrate= 21.018g…

Q: Mass = 1kg, Speed = 2m/s. KE = ?

A:

Q: Select the path(s) that lead to changes in BOTH the average kinetic and potential energies of the…

A: Answer: Given diagram is the phase diagram of a substance. Phase diagram gives us the interpretation…

Q: If 45.98 g of sodium combines with an excess of chlorine gas to form 116.89 g of sodium chloride,…

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