• Ions with unpaired electrons?

    Which of the following ions is expected to have one or more unpaired electrons? Check all that apply. A) O2(-) B)F2(+) C)O2(2-) N2(2-) I wrote in parenthesis the charge of the ion. Thank you very much.
    Which of the following ions is expected to have one or more unpaired electrons? Check all that apply. A) O2(-) B)F2(+) C)O2(2-) N2(2-) I wrote in parenthesis the charge of the ion. Thank you very much.
    3 answers · Chemistry · 9 years ago
  • Hybrization of elements?

    Can you tell me what is the hybridation of SF2 and SF4? Is it sp for SF2 and sp3 for SF4? (I'm not sure whether is correct). Thank you very much for your help.
    Can you tell me what is the hybridation of SF2 and SF4? Is it sp for SF2 and sp3 for SF4? (I'm not sure whether is correct). Thank you very much for your help.
    1 answer · Chemistry · 9 years ago
  • Polar covalent molecules?

    Which of the following are polar covalent molecules? A) CHCl3 B) SO2 C) H2S D) CO2 E) CCl4 Thank you.
    Which of the following are polar covalent molecules? A) CHCl3 B) SO2 C) H2S D) CO2 E) CCl4 Thank you.
    1 answer · Chemistry · 9 years ago
  • Polar covalent molecules?

    Which of the following are polar covalent molecules? A) CHCl3 B) SO2 C) H2S D) CO2 E) CCl4 Thank you.
    Which of the following are polar covalent molecules? A) CHCl3 B) SO2 C) H2S D) CO2 E) CCl4 Thank you.
    1 answer · Chemistry · 9 years ago
  • Problem on energy using equation E=(hc)/(lambda)?

    The power of a red laser (lambda= 630 nm) is 3 watts (where 1 W= 1j/s). How many photons per second does the laser emit? Hint: you have to use equation: E= hc/ lambda. Thank you very much
    The power of a red laser (lambda= 630 nm) is 3 watts (where 1 W= 1j/s). How many photons per second does the laser emit? Hint: you have to use equation: E= hc/ lambda. Thank you very much
    1 answer · Chemistry · 9 years ago
  • Electronic configuration question?

    Whic monoatomic ion has a charge of 1+ and the electronic configuration of {Kr} 4d10 5s2? Why? Thank you very much.
    Whic monoatomic ion has a charge of 1+ and the electronic configuration of {Kr} 4d10 5s2? Why? Thank you very much.
    1 answer · Chemistry · 9 years ago
  • Electronic configuration question?

    Whic monoatomic ion has a charge of 1+ and the electronic configuration of {Kr} 4d10 5s2? Thank you very much.
    Whic monoatomic ion has a charge of 1+ and the electronic configuration of {Kr} 4d10 5s2? Thank you very much.
    2 answers · Chemistry · 9 years ago
  • Electronic configuration?

    How many orbitals are there in an atom with the following quantum numbers: n=4 L=2 M(L)= 2 Thank you very much.
    How many orbitals are there in an atom with the following quantum numbers: n=4 L=2 M(L)= 2 Thank you very much.
    1 answer · Chemistry · 9 years ago
  • Religion journal sample?

    I have to write a summary and reflection of a religion journal. Do you know a website that shows some samles of summary and reflections of some religious journal? Thank you very much.
    I have to write a summary and reflection of a religion journal. Do you know a website that shows some samles of summary and reflections of some religious journal? Thank you very much.
    1 answer · Religion & Spirituality · 9 years ago
  • Valence electrons of compounds?

    How many valence electrons do the following compounds have? HBr CH4 How do you find it? Thank you very much.
    How many valence electrons do the following compounds have? HBr CH4 How do you find it? Thank you very much.
    1 answer · Chemistry · 9 years ago
  • Which of the following are not characteristic of an ideal gas?

    -The density of all ideal gases is the same. -Their volume is indipendent of temperature. -The molecules of gas have little volume compared with the volume that they occupy. -Gas atoms or molecules do not interact with one another. check all that apply, thanks for your help.
    -The density of all ideal gases is the same. -Their volume is indipendent of temperature. -The molecules of gas have little volume compared with the volume that they occupy. -Gas atoms or molecules do not interact with one another. check all that apply, thanks for your help.
    3 answers · Chemistry · 9 years ago
  • Oxidation reduction reaction?

    Do you know how to solve the following redox reaction: Mg (s) + HBr(aq) ---------> MgBr2 (aq) + H2(g) I usually solve them writing 2 half reactions but this time looks like 2 half reactions are not enough, therefore I don't know what to do... Thank you very much in advance for all your help.
    Do you know how to solve the following redox reaction: Mg (s) + HBr(aq) ---------> MgBr2 (aq) + H2(g) I usually solve them writing 2 half reactions but this time looks like 2 half reactions are not enough, therefore I don't know what to do... Thank you very much in advance for all your help.
    1 answer · Chemistry · 9 years ago
  • Molar heat capacity of KOH?

    Can someone tell me where can I find the molar heat capacity of KOH? I was told by the professor that I should find it on the internet but I can't find it anywhere. Thank you very much for your help.
    Can someone tell me where can I find the molar heat capacity of KOH? I was told by the professor that I should find it on the internet but I can't find it anywhere. Thank you very much for your help.
    1 answer · Chemistry · 9 years ago
  • Acid-base reaction problem?

    Many homeowners treat their lawn with CaCO3 (s) to reduce the acidity of the soil. Write a net ionic equation for the reaction of CaCO3 with a strong acid. Please help me with this, I have studied the whole day and I can't figure it out. Thank you very much.
    Many homeowners treat their lawn with CaCO3 (s) to reduce the acidity of the soil. Write a net ionic equation for the reaction of CaCO3 with a strong acid. Please help me with this, I have studied the whole day and I can't figure it out. Thank you very much.
    2 answers · Chemistry · 9 years ago
  • Oxidation number of two compounds?

    NH4 (aq) + 2H2O ------> 4H + NO2 + 6 e- Can you please tell me the oxidation numbers of NH4 and NO2 in the reaction above? Thank you very much for your help.
    NH4 (aq) + 2H2O ------> 4H + NO2 + 6 e- Can you please tell me the oxidation numbers of NH4 and NO2 in the reaction above? Thank you very much for your help.
    3 answers · Chemistry · 9 years ago
  • Neutralization reaction help?

    H3PO4 (aq) + 3Ba(OH)2 (aq) ------------> ?????? + H20? Can you please tell me what are the products of this reaction? Since it is a neutralization reaction there has to be water and a salt but I'm not able to find it. Thank you so much for your help
    H3PO4 (aq) + 3Ba(OH)2 (aq) ------------> ?????? + H20? Can you please tell me what are the products of this reaction? Since it is a neutralization reaction there has to be water and a salt but I'm not able to find it. Thank you so much for your help
    1 answer · Chemistry · 9 years ago
  • Neutralization reaction help?

    H3PO4 (aq) + 3Ba(OH)2 (aq) ------------> ?????? + H20? Can you please tell me what are the products of this reaction? Since it is a neutralization reaction there has to be water and a salt but I'm not able to find it. Thank you so much for your help
    H3PO4 (aq) + 3Ba(OH)2 (aq) ------------> ?????? + H20? Can you please tell me what are the products of this reaction? Since it is a neutralization reaction there has to be water and a salt but I'm not able to find it. Thank you so much for your help
    2 answers · Chemistry · 9 years ago
  • Neutralization reaction?

    H2SO4 (aq) + KOH (aq) -------> H2O + K2SO4 Can you explain why the product is H2O and not H3O and also why is K2 and not just K (where does the 2 come from? Thank you very much for your help.
    H2SO4 (aq) + KOH (aq) -------> H2O + K2SO4 Can you explain why the product is H2O and not H3O and also why is K2 and not just K (where does the 2 come from? Thank you very much for your help.
    1 answer · Chemistry · 9 years ago
  • Calculate Calorimeter Constant?

    When 40 mL of water of 60' C is added to 40 mL of 25' C water in the calorimeter and the temperature rise 15' C, what is the calorimeter constant (Cc)? Thank you very much for your help.
    When 40 mL of water of 60' C is added to 40 mL of 25' C water in the calorimeter and the temperature rise 15' C, what is the calorimeter constant (Cc)? Thank you very much for your help.
    1 answer · Chemistry · 9 years ago
  • Calculate Calorimeter Constant?

    When 40 mL of water of 60' C is added to 40 mL of 25' C water in the calorimeter and the temperature rise 15' C, what is the calorimeter constant (Cc)? Thank you very much for your help.
    When 40 mL of water of 60' C is added to 40 mL of 25' C water in the calorimeter and the temperature rise 15' C, what is the calorimeter constant (Cc)? Thank you very much for your help.
    1 answer · Chimica · 9 years ago