• What is boiling point of ice in space?

    If piece of ice has temperature -270 degree celsius and is in vacuum space will it boil?
    If piece of ice has temperature -270 degree celsius and is in vacuum space will it boil?
    6 answers · 1 day ago
  • What is the external temperature of the liquid nitrogen tank?

    What is the external temperature of the liquid nitrogen tank?

    Best answer: Liquid nitrogen can't be placed in a high temperature environment. In summer, the temperature is controlled at about 20 degrees, the room is best ventilated, liquid nitrogen is liquid, and the temperature is low.
    Best answer: Liquid nitrogen can't be placed in a high temperature environment. In summer, the temperature is controlled at about 20 degrees, the room is best ventilated, liquid nitrogen is liquid, and the temperature is low.
    4 answers · 12 hours ago
  • Weird thick and frothy smoke spewing and circling out the end of the cigarette butt I smoked after putting it out?

    Best answer: That's the stuff that normally goes into your lungs without you seeing it. It pooled like that because it wasn't being drawn anywhere - but that's what cigarette smoke actually looks like in the lab - thick and frothy. Lots of heavy-duty chemicals in there.
    Best answer: That's the stuff that normally goes into your lungs without you seeing it. It pooled like that because it wasn't being drawn anywhere - but that's what cigarette smoke actually looks like in the lab - thick and frothy. Lots of heavy-duty chemicals in there.
    4 answers · 1 day ago
  • What are all the elements of the periodic table?

    Best answer: Here is the Full Metal Alchemist reciting the periodic table in a nervous romantic situation:

    https://youtu.be/LhhXMowhhz8
    Best answer: Here is the Full Metal Alchemist reciting the periodic table in a nervous romantic situation:

    https://youtu.be/LhhXMowhhz8
    7 answers · 5 days ago
  • How to solve this redox question: CH3OH + MnO2 = Mn^2+ + CO2?

    Best answer: I'd go with this .. .. 1 CH3OH + 3 MnO2 + 6 H(+) ---> 3 Mn(2+) + 1 CO2 + 5 H2O ********* memorize these 7 steps to balancing redox reactions (1) identify the oxidation state of each and every atom (2) determine which atoms are oxidized and which are reduced (3) write half reactions.. include electrons... show more
    Best answer: I'd go with this
    .. .. 1 CH3OH + 3 MnO2 + 6 H(+) ---> 3 Mn(2+) + 1 CO2 + 5 H2O

    *********
    memorize these 7 steps to balancing redox reactions
    (1) identify the oxidation state of each and every atom
    (2) determine which atoms are oxidized and which are reduced
    (3) write half reactions.. include electrons
    (4) balance the electrons in the half reactions
    (5) combine half reactions and cancel electrons
    (6) rearrange the atoms into their correct chemicals and add counter ions
    (7) add any remaining chemicals.. THEN balance them

    *** 1 ***
    on the left
    .. O in CH3OH is -2
    .. H in CH3OH is +1
    .. C in CH3OH is -2... why? CH3OH has 0 net charge.. 1xC + 4*(+1) + 1*(-2) = 0
    .. Mn in MnO2 is +4
    .. O in MnO2 is -2

    on the right
    .. Mn is +2
    .. C in CO2 is +4
    .. O in CO2 is -2

    *** 2 ***
    remember this
    .. "reduction means reduction in charge".... (better is reduction in oxidation state)

    for this reaction
    .. Mn went from +4 to +2 and was REDUCED
    .. C went from -2 to +4 and was OXIDIZED

    all the H's and O's remained the same

    *** 3 ***
    half reactions
    .. Mn(+4) + 2 e's ----> Mn(+2)
    .. C(-2) ----> C(+4) + 6 e's

    *** 4 ***
    balance e's... 3x the reduction half
    .. 3 Mn(+4) + 6 e's ----> 3 Mn(+2)
    .. 1 C(-2) ----> 1 C(+4) + 6 e's

    *** 5 ***
    combine half reactions
    .. 3 Mn(+4) + 6 e's + 1 C(-2) ----> 3 Mn(+2) + 1 C(+4) + 6 e's

    cancel e's
    .. 3 Mn(+4) + 1 C(-2) ----> 3 Mn(+2) + 1 C(+4)

    *** 6 ***
    rearrange and add counter ions as necessary
    .. 1 CH3OH + 3 MnO2 ---> 3 Mn(2+) + 1 CO2

    *** 7 ***
    add remaining species
    ... we can see we have 4 H's on the left and no H's on the right.. ..so we need 4 more on the right
    ... we can see we have 7 O's on the left and 2 on the right... so we need 5 more on the right
    adding those gives
    .. 1 CH3OH + 3 MnO2 ---> 3 Mn(2+) + 1 CO2 + 4 H(+) + 5 O(-2)

    now when we start adding H(+)'s and O(-2)'s, we usually group those into water..
    .. 1 CH3OH + 3 MnO2 ---> 3 Mn(2+) + 1 CO2 + 2 H2O + 3 O(-2)

    and we still have 3 extra O(-2)'s on the right without H's to make H2O.. so we need to add some H+ on the left
    .. 1 CH3OH + 3 MnO2 + 6 H(+) ---> 3 Mn(2+) + 1 CO2 + 2 H2O + 3 H2O

    and cleaning up the equation by combining the H2O's
    .. 1 CH3OH + 3 MnO2 + 6 H(+) ---> 3 Mn(2+) + 1 CO2 + 5 H2O
    5 answers · 5 days ago
  • Where can I buy Zinc Powder and Sodium Hydroxide in Georgia??

    Best answer: I found this on the net: You can find lye in some hardware stores - often in the "drain cleaning" section. You need to be very careful that you're getting "100% sodium hydroxide" - do not buy it if it's not. The website "ThoughtCo" suggests two ways to get zinc - from pennies... show more
    Best answer: I found this on the net:

    You can find lye in some hardware stores - often in the "drain cleaning" section. You need to be very careful that you're getting "100% sodium hydroxide" - do not buy it if it's not.

    The website "ThoughtCo" suggests two ways to get zinc - from pennies and from batteries (https://www.thoughtco.com/ways-to-get-zi... There involve smelting (or the separation of physical states) and require good practices to avoid burning the house down. It appears to be easier to buy zinc from a chemical supply house. They are surprisingly common in most towns. Look in the yellow pages to find one near you.
    5 answers · 5 days ago
  • 'O' is an atom of oxygen, while 'O₂' is a molecule of oxygen: Is this correct?

    Best answer: Yes, that is correct; however, I think you have some underlying questions inside of that inquiry. O₂ is one of the diatomic homo(same)nuclear(atom) molecules, much like N₂, which are both major components of our Earth's atmospheric gas make up, and they are hardly ever found in a gaseous monoatomic form. A... show more
    Best answer: Yes, that is correct; however, I think you have some underlying questions inside of that inquiry.

    O₂ is one of the diatomic homo(same)nuclear(atom) molecules, much like N₂, which are both major components of our Earth's atmospheric gas make up, and they are hardly ever found in a gaseous monoatomic form. A major difference is that O₂ is readily reactive, just look at those wildfires in CA roar from the O₂ reactants in the air, but N₂ is highly inert. O, while being technically on the periodic table as AN oxygen atom, is almost never seen in the atmosphere or anywhere else and without fail in every reaction you will ever see with oxygen being used as a reagent will show it as O₂(g). However, you can find its other form O-(aq), the really bad radical form of oxygen that IS monoatomic, think mutations... cancer and aging, pretty commonly found in solutions most especially in physiological liquids of the body! When people talk about antioxidants being good for you, this type of oxygen is the major culprit from which they are protecting you. You can also find the gaseous form of O-(g), but it requires a lightning strike or UV radiation upon O₂(g), and VERY rapidly goes on to form ozone, O3(g). Also, O-(g) is found in the lower orbit of the thermosphere, areas of which can be up to 96% saturated with it! Lastly, just for an aside, there is even solid oxygen O8(s), fun fact.

    So, while your written question only asked for a simple answer, it seemed as though you wanted to understand oxygen a lot better, and I hope that now you do :-)

    Have a great time in Chemistry! The things you learn will astonish you.
    11 answers · 1 week ago