1. science

    the aim of this experiment is to determine how much lead oxide can be made from 4,0g of lead nitrate.calculate the mass of lead oxide you should make.

    asked by karabo on May 29, 2014
  2. Chemistry

    A mixture of powdered carbon and an oxide of lead was heated producing lead metal and carbon dioxide.when 13.70g of the lead oxide was reduced to lead by carbon,960cm^3 of carbon dioxide measured at r.t.p was formed. Calculate the empirical formular of the

    asked by Newton on May 10, 2015
  3. chemistry calculations

    when 2.750 g of the oxide of lead is heated to a high temperature,it decomposes to produce 0.0640 g of oxygen gas and 2.686 g of some new lead oxide compound.How can you use this data to determine the formula of the new compound?

    asked by joan on December 4, 2013
  4. Chemistry

    Lead(II) oxide from an ore can be reduced to elemental lead by heating in a furnace with carbon. PbO(s) + C(s)= Pb(l) + CO(g) Calculate the expected yield of lead if 90.0 kg of lead oxide is heated with 90.0 kg of carbon.

    asked by Jack on November 30, 2012
  5. Physics

    If a solid glass cylinder is placed above the words Lead Oxide (Lead in red print and Oxide in blue) and viewed from the side, the word Lead appears inverted, but the word Oxide does not. Explain. What part of the cylinder is on top of the letters? From

    asked by Bert on March 29, 2007
  6. Chemistry

    Lead can be extracted from lead(II) sulfide, PbS, in two stages. Stage 1: Lead(II) sulfide is heated in air. It reacts with oxygen to produce lead(II) oxide and sulfur dioxide. Stage 2: The Lead(II) oxide is then heated in a blast furnace with coke. (a)

    asked by Qindan on April 22, 2013
  7. chem- ion

    naming chemical compounds. I don't really get how you get the symbol from the word or the other way around for polyotomic ions so.. here are some examples that a website gave me: this is wut the site said to do:(Its confusing to me) The name of the

    asked by claire on October 19, 2010
  8. Chemistry

    Lead(II) carbonate decomposes to form Lead(II) oxide and carbon dioxide. If 5.oo grams of the reactant decomposes to produce 1.52 grams of Lead(II) oxide experimentally, what is the theoretical yield and percent yield.

    asked by Jefferson on January 13, 2015
  9. chemistry

    In 1774 Joseph Priestly conducted one of his most famous experiments which lead to a method for the preparation of oxygen. The experiment involved heating a sample of mercury II oxide with a large lens. The equation for this reaction is shown below:

    asked by lissa on November 2, 2011
  10. chemistry

    Help me conclude my lab experiment on formula of a hydrate.with the aim of determine the number of molecules of water associated with a hydrated inorganic salt

    asked by tia on February 27, 2017
  11. Chemistry

    1.600g of a metallic oxide of type MO were dissolved in100mL 1.0M HCl. The resulting liquid was made up to 500mL with distilled water. 25.00mL of the solution ,then required 21.02mL of 0.1020 M of NaOH for neutralization. Calculate the mass of the oxide

    asked by Dash on March 7, 2014
  12. Chemistry

    I had to perform an experiment using a coffee-cup calorimeter to determine the enthalpies of two separate reactions. For part 1 we worked with magnesium metal, and magnesium oxide. Data was collected and now I need to find the q, heat transferred for both

    asked by Hannah on February 13, 2012
  13. science

    At temperatures above 930 degrees Celsius, lead oxide (PbO) reduces lead sulfide (PbS) to form metallic lead (Pb) and sulfur dioxide (SO2). Write out the balanced chemical equation, using the smallest whole-number coefficients.

    asked by lef on November 16, 2012
  14. Biology

    Help with my course work 3 strips of potatoes of equal sizes are put into water, weak sucrose and strong sucrose solution. As far as prediction goes I know happens. But what is the aim of this experiment? I came up with this aim- To illustrate movement of

    asked by Anonymous on November 4, 2009
  15. Chemistry

    Kim and Al need to determine the actual mass of lead(II) sulfate in grams that formed when 1250.0mL of 0.0500 M lead(II) nitrate was mixed with 0.2000 kL of 0.0250 M sodium sulfate. When the experiment was completed Kim determined that they had a 67.5%

    asked by Fred on October 8, 2007
  16. Chemistry

    Lead(3) nitrate decomposes to form three products owygen lead(2) oxide and nitrogen dioxide (balance)

    asked by Hina on June 7, 2017
  17. science

    In an experiment to determine the solubility of lead chloride (PbCl2), 5.6g of (NH4)2SO4 was added to a 250ml solution containing an unknown amount of dissolved lead chloride (PbCl2) resulting in the formation of Lead sulfate precipitate. The mass of the

    asked by nelo on July 27, 2014
  18. Chemistry 11th Grade

    Two oxides of lead were separately reduced to metallic lead by heating in a current of hydrogen and the following data obtained : (i) Mass of yellow oxide taken = 3.45g Loss in mass during reduction = 0.24g (ii) Mass of brown oxide taken = 1.227g Loss in

    asked by Akashdeep on May 2, 2010
  19. Chemistry

    When ammonia was reacted to copper(ll)oxide at a high temperature, it will produce nitrogen gas, copper metal and water vapour. an experiment was done with 18.0g of ammonia was reacted with 90.0g of copper(ll)oxide. (a)Write balance chemical equations for

    asked by Reezyy on December 1, 2016
  20. Chemistry

    A student made a determination of the empirical formula ot tungsten oxide (WO) produced by the total ignition of air of a smaple of metallic Tungsten. From the lab: Weight of crucible 11.120g weight of tungsten 8.820 weight of crucible and product (WO)

    asked by Izzie on October 26, 2011
  21. Chemistry

    You are going to be provided with 1 0.50 g sample of magnesium oxide. Treatment of this sample with hydrochloric acid (HCl) will take all of the MAGNESIUM in the oxide and change it into magnesium chloride, MgCl2 You will add 100 ml of 1.0 M HCl to the

    asked by JC on October 1, 2008
  22. Chemistry

    The equation for the reaction that occurs when lead(II) oxide is heated with coke in a blast furnace is: 2PbO+c -->2Pb+CO2 (i)State, with a reason, whether PbO is oxidised or reduced in this reaction. (ii)Calculate the minimum mass, in tonnes, of coke

    asked by Qindan on April 22, 2013
  23. Chem

    What is PbCO3(s)-->PbO(s)+CO2(g) A. neutralization B. metathesis C. combustion D. decomposition E. combination Looks like the lead carbonate is decomposing to lead oxide and carbon dioxide to me. check my thinking.

    asked by crystal on September 15, 2006
  24. Stiochiometry

    Equation 2Mg+O2= 2MgO Lab data: Magnesium ribbon= .04 grams Magnesium Oxide= .09 2. Using the initial mass of magnesium, calculate the moles of oxygen and then moles of magnesium oxide produced. What is the mole ratio of the reactants? 3. Calculate the

    asked by Emily on February 26, 2009
  25. Chemistry

    Given Lead (||) oxide, nitric (V), sodium carbonate solution and water. Explain briefly how you can prepare Lead (||) Carbonate. Use equation where possible.

    asked by STEPHEN on March 25, 2019
  26. chemistry

    given lead(ii)oxide,nitric acid,sodium carbonate and water,explain how you can prepare lead carbonate

    asked by jasper paul on December 17, 2018
  27. chemistry

    procedure of obtaining lead carbonate from lead oxide ,nitric acid,sodium carbonate and water

    asked by trizah on September 24, 2017
  28. Statiatics

    Need help please. Determine whether each experiment is a binomial experiment or can be reduced to a binomial experiment. If so, describe a trial, determine the random variable, and state n, p and q. a) You roll a die 15 times and find the sum of all the

    asked by Josh on November 25, 2015
  29. Chemistry

    What is the function of water in an experiment where dry hydrogen chloride gas is passed through heated zinc turnings and then the gas produced is bubbled through water and then passed through heated lead (2) oxide

    asked by Anonymous on April 25, 2019
  30. Chemistry

    In the following reaction, 451.4 g of lead reacts with excess oxygen forming 313.6 g of lead(II) oxide. Calculate the percent yield of the reaction. 2Pb(s)+O2(g)= 2PbO(s)

    asked by Noelle on October 7, 2013
  31. science

    1.5173 g of organic iron compound containing FE , C ,H and O is burnt in oxygen gas produced 2.838 g OF carbon dioxide and 0.8122 g of water. In separate experiment to determine the mass % of iron, 0.3355 g of the compound yielded 0.0758 g iron (II) oxide.

    asked by Nor on June 28, 2016
  32. Physics

    If you want to design a set of five density rods (made of aluminum, iron, copper, brass, and lead), determine the ratios of the lengths of each rod to the length of the lead rod, the densest material in the group. The specific gravities of the elements are

    asked by Alyssa on November 19, 2015
  33. science

    Which of the following statements the aim of the person who threw darts shown the picture? A The person's aim was both precise and accurate B The person's aim was precise,but it was not accurate. C The person's aim was accurate,but it was not precise. D

    asked by JACKSEPTICFAN!!!!! on September 21, 2017
  34. Chemistry

    In the experiment 0.500 g of copper reacted with oxygen to give 0.563 g of copper oxide. What is the empirical formula of the oxide expressed as a chemical formula?

    asked by Brenda on October 24, 2012
  35. physical science(chemistry change)

    Experiment of tiratic oxilic acid wih mass 4,5g and volume of 25ml,nd concentration of 0,05mol.dm.3 against volume of 14ml and 1,79mol.dm3 sodium hydoxide to determine the concentration of sodium hydroxide,,show all the working,aim,results,observation of

    asked by dineo on June 12, 2014
  36. Chemistry

    In my experiment I heated some oxide of tin, in order to figure out its empirical formula. How would the empirical formula be affected if the oxide was not heated to dryness? Also If some oxide splattered out of the container, how would this affect the

    asked by Wally on February 13, 2012
  37. physics

    A cube of lead measuring 1 meter on each side is thrown into the ocean. Determine the buoyant force acting on this mass of lead. The density of lead is 11.4 grams/ cubic centimeter

    asked by sierra on March 8, 2012
  38. Chemistry

    Please be specific. In an experiement 23.4 g of iron sulphide, FeS are added to excess oxygen, and 16.5 of Iron oxide, Fe2O3 are produced. The balanced euation for the reaction is 4FeS =7O2 -- 2Fe2O +2SO2. Calculate the percent yield of iron oxide in the

    asked by Kelsey on August 3, 2010
  39. science

    Which of the following statements describes the aim of the person who threw the darts shown in the picture? (1 point) A*) The person’s aim was both precise and accurate. B*)The person’s aim was precise, but it was not accurate. C*)The person’s aim

    asked by RAWR on September 4, 2015
  40. Chemistry

    Magnesium oxide can be made by heating magnesium metal in the presence of oxygen. The balanced equation for the reaction is: 2Mg(s)+O2(g)→2MgO(s) When 10.1 g of Mg are allowed to react with 10.5 g of O2, 14.5 g of MgO are collected. a) Determine the

    asked by Beth on October 19, 2016
  41. science

    when a 424-g of iron powder is burned in an oxygen atmosphere, 0.606-g of a reddish brown oxide is obtained. Determine the empirical formula of the oxide.

    asked by kit on July 23, 2012
  42. 10th grade Physics

    What experiment(apparatus can be made) can be used to determine the relationship between period and frequency of vibration?

    asked by Luke on August 4, 2009
  43. Chemistry

    Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work:

    asked by Jim on January 29, 2011
  44. Chemistry

    Calcium Carbonate and aluminum silicate are mixed together and heated. A mixture of calcium oxide, carbon dioxide, aluminum oxide and calcium silicate is produced. Write the balanced equation for this reaction. My Work:

    asked by Jim on January 29, 2011
  45. Chemistry

    In chemistry lab we did an experiment trying to find the empirical formula of an oxide and tin. The question is "suppose some of the oxide splattered out of the crucible. How would this affect your calculated ratio of the number of moles of oxygen to the

    asked by Bee on November 3, 2010
  46. Chemistry

    According to his prelaboratory theoretical yield calculations, a student's experiment should have produced 1.41 g of magnesium oxide. When he weighed his product after reaction, only 1.33 g of magnesium oxide was present. What is the student's percent

    asked by Teresa on December 6, 2014
  47. Chemistry

    According to his prelaboratory theoretical yield calculations, a student's experiment should have produced 1.44 g of magnesium oxide. When he weighed his product after reaction, only 1.23 g of magnesium oxide was present. what is the student's percent

    asked by Sia on February 16, 2009
  48. chemistry

    The following unbalanced equation describes the reaction that can occur when lead (II) sulfide reacts with oxygen gas to produce lead (II) oxide and sulfur dioxide gas: PbS + O2  PbO + SO2. all i need help on is explaination of the electron transfers

    asked by amtonio on January 17, 2017
  49. Biology

    In an experiment designed to measure the distance a golf ball is hit by clubs made of different material, a standardized variable would be: A The distance the golf ball traveled B The type of material the club is made of C The material the golf ball was

    asked by Brooke on January 11, 2012
  50. Chemistry

    In experiment of silver, lead and mercury(I) chlorides mix with NH3, how does the heating of the lead precipitate present after the addition of NH3help identify the formula ?of the precipitate

    asked by Chamy on May 22, 2012
  51. Chemistry

    Aluminum cookware is reffered ti as "anodized aluminum". The anodizing process puts a layer of aluminum oxide on the aluminum, protecting it from corrosion. Consider the reaction of 10.00 grams of aluminum with 10.00 grams of oxygen to form aluminum oxide.

    asked by Stacey on February 15, 2009
  52. value

    What happens when lead oxide is treated with hydrogen.Reason

    asked by value on June 8, 2017
  53. Chemistry

    When 1.187g of a metallic oxide is reduced with excess hydrogen, 1.054g of the metal is produced. How do you determine what the metal oxide is?

    asked by Josh on May 18, 2011
  54. college chemistry..

    a sample of lead glass is prepared by melting together 20.0 g og silica (SiO2), and 80.0 g of lead oxide (PbO). what is the mole fraction of SiO2 and PbO in the glass?

    asked by Anonymous on December 3, 2010
  55. science

    Based on the reactivity series, decide whether the following reaction will occur. If you think there will be no reaction, write down why you think this. If you think a reaction will happen, write down why you think it will happen, and the word equation to

    asked by ishaan on June 27, 2011
  56. Chemistry

    A student reacted 5.33 grams of cobalt with oxygen gas and obtained 7.50 grams of cobalt oxide. Determine the empirical formula of this cobalt-oxygen compound based upon this experiment.

    asked by Timothy on September 26, 2012
  57. Physics

    A student wants to run an experiment to determine how the distribution of mass (location of mass) affects an object`s rotational velocity. For this experiment the student picks 3 rings. One is a wood ring (like a hula-hoop) with all of its mass at the

    asked by Kyle on January 17, 2010
  58. chemistry

    Calcium oxide reacts with water in a combination reaction to produce calcium hydroxide: CaO(s) + H2O(l) ¨ Ca(OH)2(s) In a particular experiment, a 2.00-g sample of CaO is reacted with excess water and 2.14 g of Ca(OH)2 is recovered. What is the percent

    asked by Jess on October 26, 2011
  59. math

    Lead Contamination More than a decade ago high levels of lead in the blood put 88% of children at risk. A concerted effort was made to remove lead from the environment. In a random sample of 200 children taken more than a decade ago, what is the

    asked by brian on November 20, 2009
  60. Life sciences

    Aim:to demonstrate that expired air contains carbon dioxide 1-Briefly explain your observations 2- Suggest a suitable control for this demonstration 3 what can be concluded from this experiment 4 labelling experimental set-up

    asked by Sbongile on September 13, 2018
  61. chemistry

    Vanadium oxide is used as an industrial catalyst. The percent composition of this oxide is 56.0% vanadium and 44.0% oxygen. Determine the empirical formula for vanadium.

    asked by chris on November 28, 2012
  62. Chemistry

    The student wanted to be sure he had made Calcium Oxide. He crushed some heated limestone and added water. The mixture got hot. The student cooled the mixture and filtered it. This gave a colourless solution and a white solid that was left in the filter

    asked by Adam on September 21, 2014
  63. physics conclusion

    im not quite sure what to write for my conclusion for this physics experiment. The aim is to record measurements and carry out calulations with the correct number of figures. We had to take a brass rod and measure its width with vernier calipers which was

    asked by San on March 10, 2007
  64. chemistry

    How would a titration be used to determine the concentration of lead ions that may be present in the water supply of an old house that still has lead pipes?

    asked by sally on May 1, 2011
  65. college physic

    A solid cylindrical rod made from a center cylinder of lead and an outer concentric jacket of copper.Except for its ends,the rod is insulated,so that the loss of heat from the curved surface is negligible.When a temperature difference is maintained between

    asked by noah on February 22, 2012
  66. chemistry

    Write and balance each of the following equations, and then identify each by type. a) copper+chlorine-->copper(ll)chloride b) calcium chlorate--->calcium chloride+oxygen c)lithium+water--->lithium hydroxide+hydrogen

    asked by Megan on March 8, 2015
  67. chemistry

    Write and balance each of the following equations, and then identify each by type. a) copper+chlorine-->copper(ll)chloride b) calcium chlorate--->calcium chloride+oxygen c)lithium+water--->lithium hydroxide+hydrogen

    asked by Megan on March 8, 2015
  68. chemistry

    A 2.077g sample of an element which has an atomic mass between 40 and 55 reacts with oxygen to form 3.708g of an oxide. Determine the formula mass of oxide ( and identify the element)

    asked by Chansa on May 4, 2016
  69. chem 121

    Iron and oxide react to form iron(lll) oxide: 4Fe(s) + 3O2(g)+ 2FeO2(s) Determine the limiting reactant in each of the following mixtures of reactants: 2.0 moles of Fe and 6.0 moles of O2

    asked by claire on November 18, 2011
  70. chemistry

    Can someone show me the answer to this as I am well confused. What mass of lead oxide reacts with 2400dm3 of carbon monoxide?

    asked by alastair on March 3, 2015
  71. science

    if the actual mass of oxide at the end of the experiment is 130g, what is percentage yield?

    asked by Mahlako on May 17, 2015
  72. Chemistry

    2Mg +O2 > 2MgO Write experiment to prove that the product is basic oxide?

    asked by Venk on April 5, 2016
  73. chemistry

    A 15.27 g sample of Mo2O3(s) is converted completely to another molybdenum oxide by adding oxygen. The new oxide has a mass of 18.33 g. Add subscripts below to correctly identify the empirical formula of the new oxide.

    asked by anon on September 18, 2014
  74. chemistry

    In my chemistry lab we decomposed lead (iv) oxide by heating it and then placing a wooden splint(test the evloved gas) into the mouth of the test tube. The color changed into red lead ( Pb304).Then we reheated the sample again and it turned to PbO. I do

    asked by Lenny on April 20, 2009
  75. Chemistry

    Magnesium oxide can be made by heating magnesium metal in the presence of the oxygen. The balanced equation for the reaction is 2Mg(s)+O2(g)¨2MgO(s) When 10.2 g Mg is allowed to react with 10.6 g O2, 11.8 g MgO is collected. Determine the theoretical

    asked by Keishaun on September 18, 2015
  76. Economics

    A company is conducting a biochemical experiment for the next 12 months. In the first month, the expenses are estimated to be $30,000. As the experiment progresses, the expenses are expected to increase by 5 percent each month. The company plans to pay for

    asked by Yoyo on September 29, 2018
  77. Chemistry

    A particular metallic element, M, has a heat capacity of 0.36 J*g*K, and it forms an oxide that contains 2.90 grams of M per gram of oxygen. (a) Using the law of Dulong and Petit (Cp x M = 25 J*mol*K), estimate the molar mass of the metal M [Answer: _____

    asked by . on October 29, 2009
  78. Chemistry

    A particular metallic element, M, has a heat capacity of 0.36 J*g*K, and it forms an oxide that contains 2.90 grams of M per gram of oxygen. (a) Using the law of Dulong and Petit (Cp x M = 25 J*mol*K), estimate the molar mass of the metal M [Answer: _____

    asked by . on October 22, 2009
  79. physics

    design an experiment that will allow you to determine the length of the soccer field from one set of goal posts to a single goal post at the other end of the field.you may only use one metre stick,and two retort stands.you are not permitted to walk onto

    asked by shan on February 22, 2011
  80. chemistry

    A technician needs to determine the concentration of lead ions in a sample of water a) Suggest a test chemical that can be added to the water sample to preciitate the lead ions. Show a chemical euation for the formation of the precipitate b) after a

    asked by Kelsey on August 13, 2010
  81. Chemistry check and help

    so for all the chemical formulas if there is no subscript (for the valency of the element) does it mean it is a one or do i have to find the valency on the periodic table of elements? ex. P02 the P for Phosphorus doesn't have a number does it mean it is a

    asked by Sam on February 16, 2014
  82. chemistry. please help drbob222

    One of the reactions involved in the smelting of copper sulfide ores involves copper (I) oxide and copper (I) sulfide: 2Cu2O2 + Cu2S ---> 6Cu + SO2 Assuming that 35.00 g of copper (I) oxide is heated with 25.00 g of copper (I) sulfide A) determine which

    asked by Rose on December 7, 2014
  83. Chemistry

    Chemical Kinetics Lab - Ascorbic Acid Reduction of Iron (III) The object of this experiment was to determine a rate law and a rate constant. The reaction that was studied was: 2 Fe(CN)6 ^-3 + C6H8O6 = 2 Fe(CN)6 ^-4 + C6H8O6 + 2H ^+ Summary of obtained

    asked by Amy on November 12, 2012
  84. Science

    Magnesium oxide is not very soluble in water, and is is difficult to titrate directly. It's purity can be determined by use of a back-titration method. 4.06 g of impure magnesium oxide was completely dissolved in an excess of 0.20 mol/L for neutralization.

    asked by Cleopatra on March 31, 2019
  85. honors chem

    determine the mass of the following example 1.3 x 10^26 iron atoms in iron III oxide, mass of iron II oxide I know this is a 2 part question and you have to use Avogadro's number, but I am clueless as to how to solve it.

    asked by keeley on September 21, 2015
  86. chemisry

    A technician needs to determine the concentration of lead ions in a sample of water a) Suggest a test chemical that can be added to the water sample to preciitate the lead ions. Show a chemical euation for the formation of the precipitate b) after a

    asked by Kelsey on August 16, 2010
  87. chemistry

    One of the reactions involved in the smelting of copper sulfide ores involves copper(I) oxide and copper (I) sulfide: 2Cu2O(solid) + Cu2S(solid) ---> 6Cu(solid) + SO2(gas) Assuming that 35.00 g of copper (I) oxide is heated with 25.00 g of copper (I)

    asked by Anonymous on December 6, 2014
  88. chemistry

    Determine the ratio of cations to anions for the following ionic compounds a. potassium, a salt substance b. calcium floride, used in steel industry c. aluminum oxide, known as corundum in the crystalline form d. calcium oxide, used to remove sulfur

    asked by Jess on October 24, 2010
  89. Public Health

    All of the following are true of lead as an environmental hazard except? a. Paint in toys is an important potential source of lead exposure. b. The higher the blood lead levels the more severe the biological effects due to lead poisoning. c. Paint in homes

    asked by Antuan on August 9, 2012
  90. Physics

    Help me understand this please You have a 2.00 kg block of lead. Lead melts at 327.5°C. CPb = 130.0 , and Hf for lead is 2.04 × 10^4 J/kg. Say you start at room temperature (25.0°C). How much heat must you transfer to melt all the lead?

    asked by Me and I on March 25, 2014
  91. Physics

    You have a 2.00 kg block of lead. Lead melts at 327.5°C. CPb = 130.0 , and Hf for lead is 2.04 × 104 J/kg. Say you start at room temperature (25.0°C). How much heat must you transfer to melt all the lead?

    asked by Pat on March 18, 2012
  92. Chemistry

    A lead atom has a mass of 3.4x10^-9g. How many lead atoms are in a cube of lead that has a volume of 2.00cm^3 if the density of lead is 11.3g/cm^3?

    asked by Hope on September 7, 2012
  93. Chemistry

    Write the following into a balanced equation. a) When a mixture of copper (II) oxide and carbon is heated, elemental copper forms and carbon monoxide evolves into the atmosphere. b) When a concentrated solution of sodium hydroxide is added to an aqueous

    asked by Royce on October 23, 2015
  94. chemistry

    Lead iodide is a relatively insoluble compound. It can dissolve from the solid phase into the aqueous phase with a Keq of 0.00027. If the concentration of lead iodide in the aqueous phase 0.125 M, then: a. we need more information to determine the progress

    asked by danny on February 28, 2015
  95. english

    Identify the sentence that is correctly punctuated. a. Our goal is simple: we aim to be the best in the industry. b. Our goal is simple, we aim to be the best in the industry. c. Our goal is simple—we aim to be the best in the industry. d. Our goal is

    asked by steve on October 13, 2017
  96. english

    Identify the sentence that is correctly punctuated. a. Our goal is simple: we aim to be the best in the industry. b. Our goal is simple, we aim to be the best in the industry. c. Our goal is simple—we aim to be the best in the industry. d. Our goal is

    asked by steve on October 13, 2017
  97. Statistics

    2. (TCO 5) A company produces electronic equipments claims that 98% of their products never need any kind of maintenance. We selected 10 of their products and we wanted to know the probability that 8 of them never need maintenance. Choose the best answer

    asked by JAR on March 1, 2013
  98. Chem 2

    If we burn a strip of magnesium in air, there will be two main products, magnesium oxide and magnesium nitride. If we then treat that mixture with water, the nitride ion is converted to ammonia. After boiling away the water and ammonia, we would be left

    asked by Maggie on January 13, 2013
  99. chem

    A lead atom has a mass of 3.4⋅10^-22 g. How many lead atoms are in a cube of lead that has a volume of 2.07 cm^3 if the density of lead is 11.3 g/cm^3?

    asked by Antony on September 22, 2013
  100. Chemistry

    A lead atom has a mass of 3.40×10−22 g. How many lead atoms are in a cube of lead that has a volume of 1.40 cm^3 if the density of lead is 11.3 g/cm^3?

    asked by Vy on March 7, 2011

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