Copper (II) sulfate pentahydrate is heated to drive off the water.  What is the sum of the coefficients for the reactants and the products?

Q: Volumetric analysis depend on which factor?

A: Volumetric analysis is a quantitative chemical analysis used to determine the amount of substance…

Q: Acetylene (C,H,) gas is often used in welding torches because of the very high heat produced when it…

A: We have to calculate the mole of acetylene needed.

Q: Magnesium carbonate decomposes into magnesium oxide and carbon dioxide. what is the sum of the…

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Q: Phosphorus reacts with bromine to produce phosphorus tribromide.  What is the sum of the…

A: Phosphorus reacts with bromine to form phosphorus tribromide.  The balanced equation for the…

Q: The student dissolved 1.056 g of the given powder mixture (barium chloride + magnesium chloride) in…

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Q: What is the equivalent in joules of 126 Calories?

A: joule and calories are the unit of energy , joule is the SI unit of energy.

Q: The gasoline tank of an automobile contains 59.0 kg of gasoline. The gasoline combines with 236 kg…

A: The reaction of gasoline (isooctane) and oxygen takes place as,                       2 C8H18  + 25…

Q: In self-contained breathing devices used by first responders, potassium superoxide KO2 reacts with…

A: According to the Law of conservation of mass " all atoms of different elements must be equal on both…

Q: when you mix 20ml sugar and 50ml water in a 250ml beaker, what is the volume of the sugar and water…

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Q: Solid sodium hydrogen carbonate (also known as sodium bicarbonate) can be decomposed to form solid…

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Q: Acetylene (C,H, gas is often used in welding torches because of the very high heat produced when it…

A:

Q: Q2// The four-cylinder engine of a light truck owned by a utility company has been converted to run…

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Q: Zinc reacts with oxygen to form zinc oxide.  What is the sum of the coefficients for the reactants…

A: Zinc metal reacts with oxygen gas to produce zinc oxide. The balanced chemical equation is given by

Q: Mercury (II) oxide decomposes into mercury metal and oxygen.  What is the sum of the coefficients…

A: Mercury (II) oxide decomposes into mercury metal and oxygen.  2 HgO (S) ----------->  2 Hg(l)   +…

Q: The student dissolved 1.056 g of the given powder mixture (barium chloride + magnesium chloride) in…

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Q: Aluminium chloride is an inexpensive reagent used in many industrial processes. It is made by…

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Q: If you were helping a friend do stoichiometry problems, what would you tell them about how they…

A: Consider the following reaction of photosynthesis:  6CO2 + 6H2O →chlorophyllhν C6H12O6 + 6O2

Q: Acetylene (CH.) gas is often used in welding torches because of the very high heat produced when it…

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Q: Which one below represents a chemical change?

A: The question is based on the concept of general chemistry. there are basically two types of change…

Q: Sodium bromide reacts with mercury (II) nitrate.  What is the sum of the coefficients for the…

A: From given  We are giving balanced equation for sodium bromide and mercury (II) nitrate and from the…

Q: Which of the following is a physical change?   a. Ice melting into liquid water   b. Sodium…

A: Physical changes are changes affecting the form of a chemical substance, but not its chemical…

Q: A sample of liquid benzene is heated until it boils; is this a chemical change true of false?

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Q: Determine the Factor of the following compounds c. Potash

A: For salts:  n factor = total positive charge of Cation or total negetive charge of Anion Potash Alum…

Q: From the given answer sheet. Operationally define physical change from chemical change and how would…

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Q: Magnesium carbonate decomposes into magnesium oxide and carbon dioxide. What is the sum of the…

A: Interpretation - To tell about the sum of the coefficients for the reactants and the products when…

Q: se numerical values, use the number 1 or O if you want the c ient AIBR3 + Coefficient ient KBr +…

A: 2 3 6 1

Q: What is the difference between a physical and chemical change? Give at least three signs of a…

A: Difference  between  chemical  change  and  physical  change.  Physical change is a type of change…

Q: The mass of a beaker is 5.333 g. After 5.00 mL of a concentrated hydrochloric acid solution is…

A: Given the weight of empty beaker and also given the weight of beaker with HCl.  Hence, the weight of…

Q: In an oxidation-reduction reaction, a piece of copper wire was put into silver nitrate solution.…

A: In a chemical reaction, two or more reactant molecules may combine or decomposes to form the new…

Q: Describe how volumetric analysis methods are used in quantitative methods. Please provide at least…

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Q: volume

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Q: Hydrogen-powered fuel cells are seen increasingly as "clean" sources of energy and are now used in…

A: The volume occupied by 1 mol of gas at standard temperature and pressure (STP) is 22.4 litres.

Q: Nitrogen reacts with hydrogen to form ammonia.  What is the sum of the coefficients for the…

A: Nitrogen (N2) reacts with hydrogen (H2) and produces ammonia gas (NH3).  N2(g)+H2(g)→NH3(g)

Q: m Calculate the kinetic energy of a 67. g bullet moving at a speed of 499.

A: Given : mass of bullet = 67. g             speed = 499. m/s  To be calculated :- kinetic energy (J)

Q: Chlorine gas reacts with sodium iodide. What is the sum of the coefficients for the reactants and…

A: Balancing of chemical reaction- It consists of reactant (starting material) and products (substances…

Q: Sulfurous acid reacts with aluminum hydroxide.  What is the sum of the coefficients for the…

A: A balanced chemical equation is that in which all the reactants and products are written with their…

Q: roduced per mole of sucrose when 2.75 grams of sucrose reacts with excess oxygen in a bomb…

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Q: Oxygen reacts with hydrogen to form water.  What is the sum of the coefficients for the reactants…

A: Oxygen reacts with hydrogen to form water.

Q: which seperation method is better suited for seperation of  solution of sugar and water into pure…

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Q: Potassium chromate reacts with lead (II) nitrate.  What is the sum of the coefficients for the…

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Q: The purpose of the mole ratio in mass to mass stoichiometric problems is to ____.

A: Mole to mole ratio is used to determine the amount of product formed. Mole to mole ratio is…

Q: Suppose you have 150. mL of a substance with a density of 48.0 g/dm3 and want to determine the mass…

A: Given:  Volume of the sample = 150 mL Density of the sample = 48.0 g/dm3 We have to calculate the…

Q: Aluminum reacts with hydrochloric acid.  What is the sum of the coefficients for the reactants and…

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Q: A homogeneous mixture composed of a solute and solvent________?

A: Homogeneous means having similar composition or state.  Simply, we cancnot differentiate between the…

Q: Changing hydrogen and oxygen into water is a chemical change none of these conservation reaction…

A: The process by which the convertion of hydrogen and oxygen into water has to be given.

Q: What are the possible errors in using gravimetric method to determine the mass of total solids in…

A: Solution: In gravimetric analysis method there are two major errors viz personal errors and methodic…