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  • Waiting for answer What is the purpose of writing chemical equations?

    The purpose of writing a balanced chemical equation is to know: the reactants (starting material) and products (end results) that occur the ratios in which they react so you can calculate how much reactants you need and how much products can be formed. Simple and complete discussion on this webs...

  • Waiting for answer What is the function of squamous epithelial cells in the lun...

    You mean the simple squamous epithelium of the lungs (specifically the alveoli of the lungs). helps reduce friction controls vessel permeability absorption and secretion

  • Waiting for answer What is the proper name for a bone doctor?

    orthopedist A bone doctor is called an orthopedist. An orthopedist is a doctor that specializes in the treatment of bones as well as muscles, joints, nerves, ligaments and tendons...

  • Waiting for answer How can a physical map help explain the historical developme...

    Just one example : Poland Look at a physical map of central Europe. Can you find Poland? Italy is Easy, just south of the Alps. Spain? Look for the Pyrenees. Britain? That big island...

  • Waiting for answer What is an antecedent?

    It's the noun that the pronoun refers back to. Ex: --Did you eat that apple ? --Yeah, I really liked it ! Apple is the antecedent of the pronoun it.

  • Waiting for answer How many molecules are in one mole of a molecular compound?

    6.022 x 10^23 molecules/mole This is also known as Avogadro's constant.

  • Waiting for answer What are the levels of organization in an ecosystem starting...

    Ecosystem, community, population, The levels of organization from lowest complexity to highest are: species, population, community, ecosystem, biome and biosphere. Since you are as...

  • Waiting for answer What is hyperconjugation?

    Hyperconjugation is the overlap of a ##σ## bond with an adjacent empty or partially filled ##p## or ##π## orbital to give a delocalized molecular orbital. Only electrons in bonds that are ##β## to the positively charged carbon can take part in in hyperconjugation. This overlap of orbitals and del...

  • Waiting for answer Why is synapse transmission slower than nerve transmission?

    Because in the nerves it is a electrical signal (quick) that has to be converted to a chemical signal (slower) at the synapse. ##color(blue)"The electrical signal"## The signal tha...

  • Waiting for answer How do you calculate the fundamental frequency of a pipe?

    This depends on whether the pipe is closed or open ended. The fundamental frequency of a pipe is the simplest, smallest portion of a wave that can fit into a pipe. At the open end of a pipe, there is always an antinode - an area with maximum air movement. If it is an open ended pipe, there is an...

  • Waiting for answer Why is SnCl4 a Lewis acid?

    According to the Lewis definition of , a compound isn't acidic or basic until it does something. In other words, you can't just say that "X compound is a Lewis acid" unless you've seen it act as an acid in some chemical reaction - in which case you'd say that "X compound is a Lewis acid in this par...

  • Waiting for answer Why are noble gases monatomic, if they are?

    Because their atoms have very, very stable electron configurations. Noble gases are located in group 18 of the and have extremely stable . With the exception of helium, ##"He"##, w...

  • Waiting for answer What does "trans" isomer mean in cyclohexane ring?

    The trans isomer has the two groups on opposite sides of the cyclohexane ring. If we imagine the ring to be planar, then one group is above the plane of the ring, and one is below the plane of the ring. Consider trans-1,3-dichlorocyclohexane. If we draw the six carbon atoms in the plane of the p...

  • Waiting for answer What is the trend for atomic radius down a group?

    Atomic size increases. As we go down within a group, we can observe an increase in the size. It is simply because when we go down a group, the number of electrons of each element inc...

  • Waiting for answer If the pH of healthy blood is 7.4, what is the hydrogen ion...

    The hydrogen ion concentration is ##4.0 ×10^"-8"color(white)(l) "mol/L"##. The definition of is ##"pH" = -log["H"_3"O"^+]## To get the hydrogen ion concentration, we take the ant...

  • Waiting for answer What is the past tense of the word "hurt"?

    hurt I agree to the answer above. hurt is the root word, the form, the form and the past participle of the word hurt. Present participle of the word is hurting.

  • Waiting for answer How do you calculate the double integral of ##(xcos(x+y))dr#...

    ##int_R intxcos(x+y) dR## Where ##R = {(x, y) : 0 = x = pi/3, "and" 0 = y = pi/2}## (I've reduced the fractions.) We can choose whether to integrate first with respect to ##x## or w.r.t. ##y##. I'll find: ##int_0^(pi/3) int_0^(pi/2) xcos(x+y) dy dx = int_0^(pi/3) [int_0^(pi/2) xcos(x+y) dy...

  • Waiting for answer What phase of matter is NaOH?

    Sodium hydroxide exists in the solid phase at room temperature, and can be found as as hemispherical white solid pellets: If you heat sodium hydroxide to a temperature of 318 degrees Celsius, it will melt. If you continue to heat it, the NaOH liquid will become a gas (boil) at 1388 degrees Celsiu...

  • Waiting for answer According to the following reaction, how many grams of hydro...

    33.26 g of ##HI## will be formed. 33.26 g of HI will be formed. ##H_(2(g))+I_(2(g))rarr2HI_((g))## 1mol + 1mol ##rarr## 2mol Using approximate ##A_r## values: ##(2xx127)gI_...

  • Waiting for answer What is the chemical formula for potassium sulfate?

    The formula is ##"K"_2"SO"_4##. The name consists of two words, with the second word ending in -ate. This tells you that the compound is a salt . The first word is the name of the...

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