Questions and answers by

chey

Questions (636)

Fill in the blank with the correct form of the verb in parenthesis. Then translate the sentences to English. Include punctuation
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Fill in the blank with the correct form of the verb in parenthesis. Then translate the sentences to English. Include punctuation
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Fill in the blank with the correct form of the verb in parenthesis. Then translate the sentences to English. Include punctuation
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Fill in the blank with the correct form of the verb in parenthesis. Then translate the sentences to English. Include punctuation
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A __ is a person who supports a group to achieve goals.A. motivation B. self-esteem C. leader D.team E. follower
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A __ is a person who influences the behavior of others.A. motivation B. self-esteem C. leader D.team E. follower
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Which promise of V.I. Lenin prior to Russia's withdrawal from WWI brought him a great deal of popularity with the Russian
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Propaganda was used by many countries during WWI to promote a positive public opinion of _______.imperialism nationalism
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A(n) _____ scale can be used to determine the acidic or basic concentration of a solution.electrolyte indicator pH disinfectant
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The negative of the common logarithm of the hydronium concentration of a solution is called a _____.pH dilution molarity acidity
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Vinegar will likely turn __ litmus paper __.
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__ is a base because it feels slippery to the touch.A. lemon juice B. blue C. red D. detergent
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Check the box if the property or example describes an acid, a base, or both.Base Both Acid feels like water slippery turns red
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Another word for basic is _____.hydroxic alkaline acidic indicator
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When acids react with carbonates or bicarbonates, one product is _____.hydrogen gas oxygen gas carbon dioxide gas acetic acid
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A substance that changes color according to the pH of a solution or other chemical change is a(n) _____.molecule disinfectant
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The _____ measures the strength of acids and bases.indicator pH base electrolyte
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The _____ measures the strength of acids and bases.
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How many grams of KCl must be dissolved in 600.0 mL of solution to produce a solution of 1.50 M? Give liters in four decimal
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Perform the calculations. Round using significant figures. (See companion material attached.)What is the molarity of a solution
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What is the correct way to dilute an acid?Slowly add a base to the acid before adding water. Slowly add water to acid. Slowly
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What is the molarity of a solution in which 58.0 g of KF is dissolved in 4.0 L of solution?
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If you dilute 675 mL of a 3.00 mol/L solution of MgCl2 to 2.00 L, what is the concentration of the new solution? When converting
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How many moles of MgCO3 are there in 2.0 L of a solution of 4.00 M?2.0 mol 6.0 mol 8.0 mol 42 mol
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To dilute a solution, you must _____.add more solute to increase the volume of a solution add more solution to increase the
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To prepare a 2.0 molar solution, you need _____.2 moles of solvent dissolved in 1 liter of solute 1 mole of solute dissolved in
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What volume in milliliters of 0.250 M KI is needed to make 100.0 mL of a solution of 0.100 mol/L? When converting to liters,
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A 12.5-gram sample of CaCl2 is dissolved in enough water to produce a solution of 0.50 M. What is the volume of the solution?
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What is the molarity of an 850.0 mL solution containing 3.0 moles of KBr? Give liters in four decimal places.
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You have a stock bottle with 500.0 mL of 5.0 mol/L NaBr on hand. Your lab needs a concentration of 2.0 mol/L. After performing a
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A __solution is a concentrated solution typically purchased from a chemical supplier that can be diluted for laboratory use.A.
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A __ factor is a ratio representing the amount of solution that remains when the stock solution is diluted.A. molarity B.
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The __ properties depend on the concentration of a solute in a solution but not on its identity.A. molarity B. volumetric C.
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A __ flask has only one marking that precisely indicates a specific volume and is used to prepare solutions with specific
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The measurement of the concentration of solutions in the number of moles of solute per liter of solution is calledA. molarity B.
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The measured value that expresses how much of a solute dissolves in a certain amount of solvent isA. molarity B. volumetric C.
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The measured value that expresses how much of a solute dissolves in a certain amount of solvent is
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What is the correct method for diluting an acid?Slowly add water to acid. Slowly add acid to water. Slowly pour acid and water
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What is a stock solution?a diluted solution typically purchased from a chemical supplier that can be diluted for laboratory use
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Which statement accurately describes dilution?Add more solute to increase the volume of a solution. Add more solution to
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Order the steps for creating a molar solution.Add water until the bottom of the meniscus reaches the line near the neck on the
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To prepare a molar solution, you need a __A. solvent B. volumetric flask C. solute D. molarity
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A concentrated solution has less __A. solvent B. molarity C. solute D. volumetric flask
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Concentration of solutions is measured in ___A. molarity B. solvent C. volumetric flask D. solute
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Choose THREE colligative properties.ionization energy freezing-point depression boiling-point elevation miscibility osmotic
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Fish “breathe” the oxygen gas that is dissolved in water. Sometimes, their habitat is exposed to thermal pollution when warm
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A beaker containing 80 g of KNO3, in 100 g of water, has a temperature of 50 ºC. If the solution cools to 30 ºC, approximately
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A solution is _____ when it contains more solute than it could contain and dissolve at a particular temperature and pressure.
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KNO3(aq)+NaCI(aq)-->__+__
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Na2SO4(aq)+BaCI2(aq)-->__+__
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Choose the correct the states of matter for the products using the solubility rules.2KI(aq)+Pb(NO3)2(aq)-->__+__ Then, mark
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In the following chemical equation, which of the components is a precipitate?Pb(NO3)2+2NaCI-->2NaNO3+PbCI2
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In the following chemical equation, which of the components is a precipitate?MgCI2+LiCO3-->MgCO3+2LiCI
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Mark the chemical formulas as Soluble or Insoluble using the solubility rules.Soluble Insoluble Ca3(PO4)2 NH4OH AgNO3 BaSO4
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10) Answer the question for the situation.There is a correlation between a Major League Baseball team’s spring training dates
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There is a correlation between the scores on a national math assessment and the number of hours students spent on preparing for
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Gracie keeps track of her energy bill during the winter months. She recorded her results in the following table:Mean Temperature
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Gracie keeps track of her energy bill during the winter months. She recorded her results in the following table:Mean Temperature
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Gracie keeps track of her energy bill during the winter months. She recorded her results in the following table:Mean Temperature
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Gracie keeps track of her energy bill during the winter months. She recorded her results in the following table:Mean Temperature
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The following table compares the hours ten college students spent studying for an exam to their resulting scores on the exam.Hou
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The following table compares the hours ten college students spent studying for an exam to their resulting scores on the exam.Hou
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Describe the transformation for g(x)=-f(x)-5
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parallel to the x-axis and has the point (-1,9)
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perpendicular to y=2x+9 and has the point (4,-1)
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parallel to y=3x and has the point (-2,-1)
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These countries were put under French control after WWI.Southern Iraq Iran Lebanon Northern Iraq Syria
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The Arab territories, which had been unified under Ottoman rule but had come under the control of the League of Nations, were
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This country offered the most financial aid to Germany after the war.France Russia Great Britain United States
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According to the articles of the Treaty of Versailles, which nation was blamed for WWI?Austria-Hungary Russia Germany Italy
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These countries were put under British control after WWI. Select all that apply.Jordan, Syria, and Lebanon Jordan, Iraq, and
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Who or what actually controlled communist Russia?Russian Social Democratic Party Council of People's Commissars V.I. Lenin
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These communists believed that revolution in Russia could only be achieved by violent means.Rasputin Nazis Bolsheviks Black
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Which group of Russians supported the White Army during Russia's Civil War?czar supporters all opposed to communist Russia
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A Soviet was a(n) _______.political council ethnicity country police force
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Stalemate means ______.movement by one side movement by both sides no movement by either side no movement by one side
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Opponent information that is spread by some form of media with the intent of promoting support for a cause is known as ________.
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How did German tactics change to involve the United States in WWI?announcing they wanted total war sinking of Allied ships
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How did governments during WWI control the hording of food by civilians?food rationing propaganda conscription increased farming
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The stalemate on the Western Front led to a limiting of combat tactics to physical wear which is called ______.propaganda total
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The Triple Entente was a political alliance formed between which countries?Russia Italy France Great Britain Austria-Hungary
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This single event led to the outbreak of WWI.Ideals of Social Darwinism Military buildup of Germany Assassination of Archduke
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The Central Powers consisted of _________.Germany Great Britain the Ottoman Empire France Austria-Hungary Russia
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The Triple Alliance was a political alliance formed between which countries?Austria-Hungary France Great Britain Russia Germany
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Grinding up a solid into a fine powder increases its rate of solvation by _____.increasing the lifespan of the solvent
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Stirring a solution _____.increases the rate of dissolution decreases the rate of dissolution does not change the rate of
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Solvents consisting of polar molecules will dissolve solutes that are _____.hydrated nonpolar immiscible polar
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You can make a solute dissolve faster by _____.removing solvent adding more solute adding ice heating the mixture
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The component being dissolved is called the _____.solvent solvation solute solution
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What is the difference between a strong and a weak electrolyte?Weak electrolytes are covalently bonded. Strong electrolytes
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Water's polarity makes it an excellent solvent for which TWO types of molecules?ionic polar covalent nonpolar
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A homogeneous mixture in which a solute is dissolved in a solvent is a(n) _____.electrolyte solution solvation nonelectrolyte
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Nearby water molecules are attracted to each other by _____.hydrogen bonds strong forces adhesion capillarity
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Oil does not mix in water because oil is nonpolar and water is _____.ionic polar nonpolar bent
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The component in which something is being dissolved is called the _____.solvent solvation solute solution
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The process whereby particles of a solvent completely surround the particles of a solute and hold them in a solution is _____.di
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Increase theof the solute particles by breaking them into smaller pieces.
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__ the solution by stirring or shaking it.
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Which TWO things could you do to dissolve a substance faster?time the dissolution rate freeze the solution stir the solution
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Which of the following would dissolve the slowest?granulated sugar in hot tea granulated sugar in iced tea a cube of sugar in
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