• What is half of 1/2 tbsp?

    8 answers · 6 days ago
  • In NaCl crystal consists of?

    4 answers · 4 days ago
  • What's the difference between carbon and graphite?

    Best answer: Well, carbon is a really multiformed substance. It has more than 500 structures and several allotropic modifications, including graphite. So graphite is just a form of carbon. This structure is built of carbon atoms only, but they have special bonds among themselves (so called layered construction). The carbon... show more
    Best answer: Well, carbon is a really multiformed substance. It has more than 500 structures and several allotropic modifications, including graphite. So graphite is just a form of carbon. This structure is built of carbon atoms only, but they have special bonds among themselves (so called layered construction). The carbon structure distinguishes graphite from other allotropic modifications of carbon.

    So there`s no obvious difference between carbon and graphite. It`s better to say that graphite is a special type of carbonic structure.
    8 answers · 7 days ago
  • Is a cup of pure iced water homogeneous or heterogeneous?

    Best answer: A mixture of ice and water is heterogeneous because you can see the two components which make up the mixture: ice and liquid water. It does not appear to be completely uniform as a homogeneous mixture would be. Despite both being H2O, the fact that they are in two different physical states along with differences in... show more
    Best answer: A mixture of ice and water is heterogeneous because you can see the two components which make up the mixture: ice and liquid water. It does not appear to be completely uniform as a homogeneous mixture would be. Despite both being H2O, the fact that they are in two different physical states along with differences in the "bonding" between H2O molecules in the liquid state and in the solid state are enough to make it heterogeneous.
    4 answers · 4 days ago
  • Chemistry question - Normality?

    What is the normality of an acid solution if 50 mL of the solution requires 48.61 mL of 0.1879 N alkali for neutralization? (A) 0.4000 N (C) 0.1827 N (B) 0.2678 N (D) 0.1274 N The answer key said C, but I have no idea how to arrive to that answer. What is principle/formulas used in... show more
    What is the normality of an acid solution if 50 mL of the solution requires 48.61 mL of 0.1879 N alkali for neutralization? (A) 0.4000 N (C) 0.1827 N (B) 0.2678 N (D) 0.1274 N The answer key said C, but I have no idea how to arrive to that answer. What is principle/formulas used in this question? Please be as thorough as possible--giving the step-by-step procedure to this would really help me. Thank you in advance!
    4 answers · 4 days ago
  • I need serious help with Chemistry homework!?

    A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density? i don't know how to do this. Density is mass over volume right? Am i supposed to convert weight into mass? Very clueless. Please help ):
    A block of aluminum occupies a volume of 15.0 mL and weighs 40.5 g. What is its density? i don't know how to do this. Density is mass over volume right? Am i supposed to convert weight into mass? Very clueless. Please help ):
    6 answers · 6 days ago
  • Is baking soda crystal a drug ?

    5 answers · 5 days ago
  • Name this compound using IUPAC system?

    Name this compound using IUPAC system?

    4 answers · 5 days ago
  • Basic Enthalpy problem, need help ASAP!?

    Basic Enthalpy problem, need help ASAP!?

    so when I solve for enthalpy with (d is delta) dH=[dHreactants]-[dHproducts] or even dH=[dHproducts]-[dHreactants] I always get roughly 1850 ( I rounded the enthalpies to -350, -400, and -250) I honestly cant figure out their reasoning on how the enthalpy is near 3000, my mcat is in 2 days so a quick response would... show more
    so when I solve for enthalpy with (d is delta) dH=[dHreactants]-[dHproducts] or even dH=[dHproducts]-[dHreactants] I always get roughly 1850 ( I rounded the enthalpies to -350, -400, and -250) I honestly cant figure out their reasoning on how the enthalpy is near 3000, my mcat is in 2 days so a quick response would be appreciated! thank you
    4 answers · 5 days ago
  • Nitrate ion is no3- . Chemistry problem help?

    Nitrogen has odd number of electrons. But why it has double bond in its lewis structure with oxygen? Why can't we just leave it like the way it is?
    Nitrogen has odd number of electrons. But why it has double bond in its lewis structure with oxygen? Why can't we just leave it like the way it is?
    4 answers · 5 days ago
  • Oxygen________chemistry problem?

    Ordinary air from the atmosphere contains about 21percent of oxygen whereas the proportion of oxygen in the mixture released by boiling river water is about 30percent.The best explanation of the increase in the percentage of oxygen is that___________
    Ordinary air from the atmosphere contains about 21percent of oxygen whereas the proportion of oxygen in the mixture released by boiling river water is about 30percent.The best explanation of the increase in the percentage of oxygen is that___________
    4 answers · 5 days ago
  • Can alkenes have more than one double bond if yes then what is its general formula?

    Best answer: Yes, there can be more than one double bond.
    The general formula is:
    CnH(2n + 2 - 2m)
    where "n" and "m" are positive integers, and "m" is the number of double bonds in the molecule, and "n" is the number of carbon atoms, which must be 2 or greater.
    Best answer: Yes, there can be more than one double bond.
    The general formula is:
    CnH(2n + 2 - 2m)
    where "n" and "m" are positive integers, and "m" is the number of double bonds in the molecule, and "n" is the number of carbon atoms, which must be 2 or greater.
    9 answers · 1 week ago
  • Is all water wet?

    Is all water wet?

    Best answer: Surprisingly not all liquids are "wet." Water is wet because it is attracted to the walls of the container and tends to climb up the wall. This is known as capillarity. Water forms a curved meniscus where the sides are higher than the center. It is possible to add "wetting agents" to water... show more
    Best answer: Surprisingly not all liquids are "wet." Water is wet because it is attracted to the walls of the container and tends to climb up the wall. This is known as capillarity. Water forms a curved meniscus where the sides are higher than the center.

    It is possible to add "wetting agents" to water to reduce the attraction between molecules and make the water "wetter." Plain old dishwashing detergent will do this.

    Non-wetting liquids do just the reverse. They do not exhibit capillarity and the center of the meniscus is higher than the edges. Mercury is the best example of a non-wetting liquid.
    .
    4 answers · 6 days ago