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  • How to uninstall forcefield on iPhone?

    My parent downloaded this on safari and I want to uninstall it. PLEASE HELP

    2 AnswersSoftware4 years ago
  • HURRY 1 HISTORY QUESTION??!?

    What was one cause of the civil rights movement following World War II?

    A. Whites recognized the

    unjustness of the inequality between the races.

    B. Blacks returned from military service to find JimCrow laws still in place.

    C. The government had passed some legislation that started the process.

    D.Students at major universities began to advocate for civil rights.

    1 AnswerHomework Help4 years ago
  • Charle's Law?!?!?!?

    What is Charles’s law?

    State the definition of the law in words.

    What are the assumptions of Charles’s law?

    Write mathematical equations that represent the law.

    What can be calculated with Charles’s law?

    Using a gas-filled balloon as an example, describe what happens to the gas molecules that behave according to Charles’s law.

    1 AnswerChemistry4 years ago
  • CHEM HELP!!! STUDY GUIDE!!!?

    . Besides the major types of radioactive decay, there are two others: positron emission and electron capture.

    • Compare and contrast positrons with electrons.

    • Explain how positron emission works and how it causes transmutations.

    • Explain how electron capture works and how it causes transmutations.

    • Compare the transmutations caused by positron emissions and electron capture.

    1 AnswerHomework Help4 years ago
  • PLEASEEEEEE HELP?

    Consider the following reaction occurring in a closed chemical system. Assume that this reaction is at equilibrium and that in general the reaction to the right is favored.

    CH3CH2OH + 3O2 2CO2 + 3H2O ∆H = –1,235 kJ/mol

    What type of chemical reaction is this?

    If more CH3CH2OH is added to the system, how will the reactions shift to reach equilibrium again?

    If water is extracted from the system, how will the reactions shift to reach equilibrium again?

    If heat is removed from the system, how will the reactions shift to reach equilibrium again?

    What is the name of the principle that helps you predict each of these shifts in equilibrium?

    1 AnswerChemistry5 years ago
  • STUDY GUIDE HELP!!!!!?

    Consider the following reaction, which is carried out at 300 K:

    CH3CH2OH + 3O2 → 2CO2 + 3H2O ∆H = –1,235 kJ/mol and ∆S = +0.22kJ/mol•K

    1) What is the value of ∆G? Show your work.

    2) Classify the reaction as spontaneous or non spontaneous.

    3) Suggest why the value for ∆S is positive in this reaction.

    1 AnswerChemistry5 years ago
  • CHEM HELP?!?!?!?!?

    11. Determine the heat of reaction for the following reaction.

    CuO(s)+ H2(g) → Cu(s) + H2O(g)

    Use the following thermochemical equations.

    1) CuO(s) Cu(s) +1/2 O2(g) ΔH = 155 kJ

    2) H2O(g) H2(g)  12O2(g) ΔH = 242 kJ

    1 AnswerChemistry5 years ago
  • PLEASE HELP!!!!?

    What is the difference between the heat of fusion and the heat of vaporization?

    1 AnswerChemistry5 years ago
  • study guide for chem!!!! HELP?

    Calculate the amount of heat released when 52.3g of steam is cooled from 112ºC to 60.0ºC. (Specific heat of steam is 1.97J/g·ºC)

    1 AnswerChemistry5 years ago
  • CHEM HELP!!!!!!!?

    How much heat is needed to raise the temperature of 62.3g of lead from 21.7ºC to 136.4ºC? (Specific heat of lead is 0.129 J/g·ºC)

    1 AnswerChemistry5 years ago
  • HELP!!!!!?

    How much heat is needed to raise the temperature of 62.3g of lead from 21.7ºC to 136.4ºC? (Specific heat of lead is 0.129 J/g·ºC)

    1 AnswerChemistry5 years ago
  • CHEM HELP!!!!!?

    Calculate the amount of heat required to heat 65.0g of ice from -20.0ºC to 55.0ºC. (Specific heat of ice is 2.03 J/g·ºC)

    3 AnswersChemistry5 years ago
  • Study guide??? Help!!!?

    Is the reaction exothermic or endothermic? Explain why.

    H2 + S + O2  H2SO4 ΔH = -811.13kJ

    H2O  H2 + O2  ΔH = 285.9kJ

    1 AnswerChemistry5 years ago
  • Convert 2.3kJ to J?

    2 AnswersChemistry5 years ago
  • CHEM!!! I don't understand!!!?

    A sample of 60.0 mL of 0.15 M HNO3 is titrated with 0.500 M NaOH. ​What volume of NaOH is required to reach the equivalence point? Both chemicals dissociate completely in water.

    Please show me how to do this!

    1 AnswerChemistry5 years ago
  • CHEM HELP!!!!?

    Assume that the pH of household bleach is 12. ​What is the hydronium ion concentration in household bleach? What is its hydroxide ion concentration?

    Please show me how to do this!

    Chemistry5 years ago
  • Chem HELP!!! PLEASE!!?

    Typical cola soft drinks have pH values of about 2.8- 3.4. ​What is the range of hydronium ion concentrations for cola soft drinks?

    Please show me how to do this!

    1 AnswerChemistry5 years ago