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4 HCl + O2 → 2 H2O + 2 Cl2

How many moles of O2 are required to react with 231 moles of HCl?

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How will you free the allocated memory ? Programming Assignment Help

How will you free the allocated memory ?

A. remove(var-name); B. free(var-name);
C. delete(var-name); D. dalloc(var-name);

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What is the similarity between a structure, union and enumeration? Programming Assignment Help

What is the similarity between a structure, union and enumeration?

A. All of them let you define new values
B. All of them let you define new data types
C. All of them let you define new pointers
D. All of them let you define new structures

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The equation for the reduction of iron(III) oxide to iron metal is given by: Fe2O3(s) +3CO(g) –> 2FE(s) + 3CO2(g) What is the maximum amount of iron, in grams, which can be obtained from 454.8 grams of iron(III) oxide? Enter your answer in scientific notation. 

3.18×102

According to the equation in problem nine, what mass of carbon monoxide, in grams, is required to produce 729.1 grams of iron? Enter your answer in scientific notation

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can someone help please Science Assignment Help

The equation for the reduction of iron(III) oxide to iron metal is given by: Fe2O3(s) +3CO(g) –> 2FE(s) + 3CO2(g) What is the maximum amount of iron, in grams, which can be obtained from 454.8 grams of iron(III) oxide? Enter your answer in scientific notation. 

3.18×102

According to the equation in problem nine, what mass of carbon monoxide, in grams, is required to produce 729.1 grams of iron? Enter your answer in scientific notation

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 please use quesion 1 to answer the second question please >>>>The equation for the reduction of iron(III) oxide to iron metal is given by: Fe2O3(s) +3CO(g) –> 2FE(s) + 3CO2(g) What is the maximum amount of iron, in grams, which can be obtained from 623.0 grams of iron(III) oxide? Enter your answer in scientific notation. 

4.36×102

According to the equation in problem nine, what mass of carbon monoxide, in grams, is required to produce 339.5 grams of iron? Enter your answer in scientific notation.

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sciennce question????? Science Assignment Help

  1. <span style='font-family:"Calibri","sans-serif";
    mso-bidi-font-family:Calibri’>Elements are classified as ______________,
    _____________, and _____________________.

  2. <span style='font-family:"Calibri","sans-serif";
    mso-bidi-font-family:Calibri’><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;font-family:"Calibri","sans-serif";
    mso-fareast-font-family:”Times New Roman”;mso-bidi-font-family:Calibri;
    color:#76923C;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:
    AR-SA’>What are the zigzag elements in the periodic table
  3. <span style='font-family:"Calibri","sans-serif";
    mso-bidi-font-family:Calibri’><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;font-family:"Calibri","sans-serif";
    mso-fareast-font-family:”Times New Roman”;mso-bidi-font-family:Calibri;
    color:#76923C;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:
    AR-SA’><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;font-family:"Calibri","sans-serif";
    mso-fareast-font-family:”Times New Roman”;mso-bidi-font-family:Calibri;
    color:#B2A1C7;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:
    AR-SA’>Compounds are described by ___________ ____________.
  4. <span style='font-family:"Calibri","sans-serif";
    mso-bidi-font-family:Calibri’><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;font-family:"Calibri","sans-serif";
    mso-fareast-font-family:”Times New Roman”;mso-bidi-font-family:Calibri;
    color:#76923C;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:
    AR-SA’><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;font-family:"Calibri","sans-serif";
    mso-fareast-font-family:”Times New Roman”;mso-bidi-font-family:Calibri;
    color:#B2A1C7;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:
    AR-SA’>Describe a compound and give an example
  5. <span style='font-family:"Calibri","sans-serif";
    mso-bidi-font-family:Calibri’><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;font-family:"Calibri","sans-serif";
    mso-fareast-font-family:”Times New Roman”;mso-bidi-font-family:Calibri;
    color:#76923C;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:
    AR-SA’><span style='font-size:12.0pt;mso-bidi-font-size:10.0pt;font-family:"Calibri","sans-serif";
    mso-fareast-font-family:”Times New Roman”;mso-bidi-font-family:Calibri;
    color:#B2A1C7;mso-ansi-language:EN-US;mso-fareast-language:EN-US;mso-bidi-language:
    AR-SA’>Compounds are ________ substances

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please i need the answer within five minutes Science Assignment Help

Describe each of the following compounds as being soluble or having low solubility in water.


Ba(OH)2 

PbCl2 

MgCl2 
 CuCO3
CaCO3

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please i need the answer within five minutes Science Assignment Help

Describe each of the following compounds as being soluble or having low solubility in water.


Ba(OH)2 

PbCl2 

MgCl2 
 CuCO3
CaCO3

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In an experiment 6.910 g of magnesium is reacted with 6.734 g of oxygen gas according to the equation: 
Mg + O2 ==> MgO. 

A. What is the limiting reactant? 
B. What mass of the other reactant is in exess? 

C. What mass of MgO is produced? 

please if you give an answer please write the number of the aswer please.

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