57. Observation on adding 6 M HCI to the testtube containing Zn metat 2 drops of phenolphthalein Balanced chemical equation:

Q: 200.0 g of a pure hydrocarbon was combusted in oxygen.  The reaction was a complete combustion.…

A: Mass of carbon dioxide = 606.9 g Mass of water = 310.3 g  Mass of hydrocarbon = 200 g  Determination…

Q: Identify the compound of calcium which is yellowish white powder and is used for disinfecting…

A: For disinfecting the water a chemical is used which is yellow in color and have a strong smell of…

Q: Carbon and oxygen combine to form carbon dioxide. What are the reactants, or what is the reactant,…

A:

Q: A chemical equation is shown below. KNO3 → KNO2 + O2 What are the coefficients that should be…

A: The reaction taking place is given as, => KNO3 -----> KNO2 + O2

Q: Enter the chemical equation 2H+(aq)+S2−(aq)→H2S(g)2H+(aq)+S2−(aq)→H2S(g). Express your answer as a…

A: A chemical reaction is represented by the chemical equation. A balanced chemical equation…

Q: Complete the given reactions. Add hydrogen atoms and charges to the appropriate atoms.

A:

Q: What is the difference between a reactant and products?

A: Reactants are the substance/compound that are present at the starting of the chemical reaction and…

Q: Liquid water reacts with carbon dioxide gas to form aqueous carbonic acid (H₂CO3). Write a balanced…

A:

Q: Which of the following metals is least chemically reactive?  potassium  sodium  iron  magnesium…

A: The reactivity of s block metals are very high due to presence of just either 1 or 2 electrons in…

Q: What is the significance of balanced chemical equations in our daily life?

A: The significance of balanced chemical equations in our daily life has to be given.

Q: Gaseous water and solid calcium oxide are produced by the decomposition of solid calcium hydroxide.…

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Q: Which of the following solutions, when added to a solution of Sr(NO3)2(aq), would form a…

A: The given compounds are : I. Na2SO4         II. HgC2H3O2          III. NH4Cl Out of the given…

Q: Balance the following chemical reaction. Enter the sum of the balanced coefficients as your answer.…

A: Given reactionSodium carbonate + hydrobromic acid → Sodium Bromide + Carbon dioxide + water

Q: Which kinds of conversion factors are inherent in chemicalformulas? Provide an example

A: Given: kinds of conversion factors are inherent in chemical formulas.

Q: This section in a Safety Data Sheet contains information on the possibility of the material to…

A: Material Safety Data Sheet is available for every chemical compounds. It provides safety handling of…

Q: Ethanol can be used as a fuel source in an alcohol lamp. The formula for ethanol is C2H5OH. Write…

A: Given , Ethanol is used as fuel source in alcohol lamp .

Q: 24. Solid iron and chlorine gas react 0/1 to make iron(III) chloride, which is a solid. Write this…

A: The balanced chemical equation can be written as follows: 2Fe (s)  +  3Cl2 (g)  →  2FeCl3 (s)

Q: Solid calcium oxide reacts with carbon dioxide gas to produce solid calcium carbonate (CaCO3).…

A: Balanced chemical equation: Balanced chemical equation can be defined as the reaction in which…

Q: Balance th

A:

Q: Next the calcium hydroxide reacts with magnesium ions, Mg2 () in the seawater to produce magnesium…

A:

Q: Change the following word equation into chemical equation. Write a complete balanced equation for…

A: Chemical Change - It is a type of change in which a new product is formed which is not reversible.

Q: 3/5 Writing the net equation for a sequence of reactions The extraction of aluminum metal from the…

A: Question solved below.

Q: Express your answer as a chemical formula. View Available Hint(s)

A: To solve this problem, we have to write the molecular formula of a given 3D-model of a compound.

Q: NH2 HONO 1 2 0°C

A: HONO is formed by the reaction of HCl on NaNO2

Q: Change the following word equation into chemical equation. Write a complete balanced equation for…

A:

Q: The chemical formula for water is H2O. What is the chemical formula for methane?

A: The chemical formula for water is H2O. The chemical formula for methane is given in step two.

Q: Chemical equation involved: Hydrogen Peroxide + Potassium lodide + > Write the correct chemical…

A:

Q: Assume that a cell contains 1.202 * 1021 molecules adenosine triphosphate (ATP).  The molar mass of…

A: 1 mole = 6.0224 x 1023 molecule Number of moles = Number of molecules/6.0224 x 1023 Mass = number of…

Q: 2- Make a comparison between brittle and ductile materials Brittle Materials Ductile materials

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Q: Complete combustion of methane When methane (CH4) burns, it reacts with oxygen gas to produce carbon…

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Q: Aqueous potassium nitrate (KNO3) and solid silver bromide are produced by the reaction of aqueous…

A: Potassium bromide (KBr ) react with  Silver Nitrate (AgNO3 ) gives Potassium nitrate (KNO3 ) and…

Q: Metal Ca Fe Cu Mg Observations All the calcium reacted in less than 30 seconds. There was a vigorous…

A: Reactivity of various metal with HCI .

Q: Flammability is a measure of how easily a substance bursts into flame, through fire. It is is a…

A:

Q: The movie below shows some molecules in a tiny sample of a mixture of gases. 1 2 3 4 5 6 7 8 9 10 11…

A: In the movieGreen balls = Chlorine = ClWhite balls = Hydrogen = HTwo green balls attached = Cl2Two…

Q: Consider an iron bar on a balance weights 75.0g.   As the iron bar rusts, which of the following…

A: Interpretation: As the 75.0 g of iron bar rusts, then which of the given statement is true is to be…