Question 25. 12:52< Вackhw7.pdf25: Which observation is consistent with a chemical reaction occurring? Why?Solid copper deposits on a piece of aluminum foil when the foil is placed in ablue copper nitrate solution. The blue color of the solution fades.Liquid ethyl alcohol turns into a solid when placed in a low-temperaturefreezerA white precipitate forms when solution of barium nitrate and sodium sulfateare mixedA mixture of sugar and water bubbles when yeast are added. After severaldays, the sugar is gone and ethyl alcohol is found in the water35: Write the balanced chemical equation for each chemical reactionSolid lead(II) sulfide reacts with aqueous hydrochloric acid to form solidlead(II) chloride and dihydrogen sulfide gasGaseous carbon monoxide reacts with hydrogen gas to form gaseousmethane (CH4) and liquid waterSolid iron(III) oxide reacts with hydrogen gas to form solid iron and liquidwaterGaseous ammonia (NH3) reacts with gaseous oxygen to form gaseousnitrogen monoxide and gaseous water39: When solid sodium is added to liquid water, it reacts with the water to producehydrogen gas and aqueous sodium hydroxide. Write a balanced chemical equation for thisreaction37: Write the balanced chemical equation for each chemical reactionSolid magnesium reacts with aqueous copper(I) nitrate to form aqueousmagnesium nitrate and solid copperGaseous dinitrogen pentoxide decomposes to form nitrogen dioxide andoxygen gasSolid calcium reacts with aqueous nitric acid to form aqueous calcium nitrateand hydrogen gasLiquid methanol (CH3OH) reacts with oxygen gas to form gaseous carbondioxide and gaseous water41: Sulfuric acid in acid rain forms when gaseous sulfur dioxide pollutant reacts withgaseous oxygen and liquid water to form aqueous sulfuric acid. Write a balance chemicalequation for this reaction47: Balance each chemical equationNa2S(aq) + Cu(NO3)2(aq) -> NaNO3(aq) + CuS(s)« PreviousNext >15000DashboardCalendarТo DoNotificationsInbox

A chemical reaction is usually accompanied by easily observed physical effects such as emission of…

25: Which observation is consistent with a chemical reaction occurring? Why? Solid copper deposits on a piece of aluminum foil when the foil is placed in a blue copper nitrate solution. The blue color of the solution fades. Liquid ethyl alcohol turns into a solid when placed in a low-temperature freezer A white precipitate forms when solution of barium nitrate and sodium sulfate are mixed A mixture of sugar and water bubbles when yeast are added. After several days, the sugar is gone and ethyl alcohol is found in the water

25: Which observation is consistent with a chemical reaction occurring? Why? Solid copper deposits on a piece of aluminum foil when the foil is placed in a blue copper nitrate solution. The blue color of the solution fades. Liquid ethyl alcohol turns into a solid when placed in a low-temperature freezer A white precipitate forms when solution of barium nitrate and sodium sulfate are mixed A mixture of sugar and water bubbles when yeast are added. After several days, the sugar is gone and ethyl alcohol is found in the water

Chemistry

10th Edition

ISBN:9781305957404

Author:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Publisher:Steven S. Zumdahl, Susan A. Zumdahl, Donald J. DeCoste

Chapter1: Chemical Foundations

Section: Chapter Questions

Problem 1RQ: Define and explain the differences between the following terms. a. law and theory b. theory and...

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Micelles are the type of lipid molecules that organize themselves in spherical shape in aqueous solutions. The production of the micelle is a reply to the amphipathic behavior of fatty acids. It means that they consist of both hydrophobic regions and hydrophilic regions. In micelles, polar head groups (hydrophilic groups) produce an outer layer associated with water whereas nonpolar tails (hydrophobic groups) are organized in the interior.

Question

Question 25.

12:52
< Вack
hw7.pdf
25: Which observation is consistent with a chemical reaction occurring? Why?
Solid copper deposits on a piece of aluminum foil when the foil is placed in a
blue copper nitrate solution. The blue color of the solution fades.
Liquid ethyl alcohol turns into a solid when placed in a low-temperature
freezer
A white precipitate forms when solution of barium nitrate and sodium sulfate
are mixed
A mixture of sugar and water bubbles when yeast are added. After several
days, the sugar is gone and ethyl alcohol is found in the water
35: Write the balanced chemical equation for each chemical reaction
Solid lead(II) sulfide reacts with aqueous hydrochloric acid to form solid
lead(II) chloride and dihydrogen sulfide gas
Gaseous carbon monoxide reacts with hydrogen gas to form gaseous
methane (CH4) and liquid water
Solid iron(III) oxide reacts with hydrogen gas to form solid iron and liquid
water
Gaseous ammonia (NH3) reacts with gaseous oxygen to form gaseous
nitrogen monoxide and gaseous water
39: When solid sodium is added to liquid water, it reacts with the water to produce
hydrogen gas and aqueous sodium hydroxide. Write a balanced chemical equation for this
reaction
37: Write the balanced chemical equation for each chemical reaction
Solid magnesium reacts with aqueous copper(I) nitrate to form aqueous
magnesium nitrate and solid copper
Gaseous dinitrogen pentoxide decomposes to form nitrogen dioxide and
oxygen gas
Solid calcium reacts with aqueous nitric acid to form aqueous calcium nitrate
and hydrogen gas
Liquid methanol (CH3OH) reacts with oxygen gas to form gaseous carbon
dioxide and gaseous water
41: Sulfuric acid in acid rain forms when gaseous sulfur dioxide pollutant reacts with
gaseous oxygen and liquid water to form aqueous sulfuric acid. Write a balance chemical
equation for this reaction
47: Balance each chemical equation
Na2S(aq) + Cu(NO3)2(aq) -> NaNO3(aq) + CuS(s)
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