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  • Waiting for answer How do you calculate moles of ions in solutions?

    Calculate the number of moles of your solution, then use the of the ions to calculate the number of moles. e.g. 5g MgCl2 dissolved in 250ml of water Calculate of MgCl2 5g MgCl2 * 1mol/95.21g = 0.053mol MgCl2 0.053mol/.250L = 0.210M MgCl2 Calculate concentration of Ions (Mg2+ and Cl-) Use...

  • Waiting for answer How is the kinetic theory of matter related to gases?

    The kinetic molecular theory tells us how gas molecules are supposed to behave. In doing this, it makes a few assumptions about how gases behave. Let's have a look at them and see if they're right: Gas particles are infinitely small. In the real world, atoms and molecules are not infinitely sma...

  • Waiting for answer How do you find the vertex of the parabola ##y=2x^2-8x+7##?

    A slight variant on method ##color(blue)("Vertex" - (x,y)- (2,-1)## Given:##" "2x^2-8x+7## Write as:##" " 2(x^2-color(red)(8/2)x)+7## Consider the ##color(red)(-8/2)" from "-8/2x#...

  • Waiting for answer How many chloride ions will be found in the formula for coba...

    Precisely ##2##. ##Co(II)## refers to a formal ##Co^(2+)## ion. And thus we have ##"cobaltous chloride, "Co^(2+)+2xxCl^-##, ##CoCl_2##.

  • Waiting for answer What are alkoxide ion and alkyl bromide?

    An alkoxide is the salt of an alcohol; an alkyl bromide is simply ##C_nH_(2n+1)Br## Alcohols are very weak acids, but can react with alkali metals to give alkoxides: ##ROH(l) + Na(s...

  • Waiting for answer Find the equation of the circle with diameter AB where A and...

    ##x^2+y^2-2x-5y+3=0## Firstly, we can find the centre of the circle by finding the midpoint of ##AB##. Since it the midpoint or the centre ##(h,k)## cut AB with equal ratio; ##Centr...

  • Waiting for answer What is the definition of a high mass star?

    In the Core of a Star be it any type, the pressure and temperature is high enough to squeeze atomic nuclei by initiating Nuclear Fusion. For instance Hydrogen nuclei fuse together to form Helium and from Helium to other heavier elements, But the heavier the element, the more the pressure and tempera...

  • Waiting for answer If the axon terminal synapses with a skeletal muscle cell, w...

    it is acetylecholine when action potential reach axon terminal , activation of Ca channel occur leading to Ca influx with rupture of vesicles and release of acetyle choline at the mo...

  • Waiting for answer What are some examples of neutralization?

    A neutralization reaction is very much like a double replacement reaction, however, in a neutralization reaction the reactants are always an acid and a base and the products are always a salt and water. The basic reaction for a double replacement react takes the following format: ##AB + CD - CB...

  • Waiting for answer What is the percent difference between the acceleration due...

    Percent difference is the difference between two values divided by the average of the two values times 100. The due to gravity at sea level is ##"9.78719 m/s"^2##. The acceleration due to gravity at the top of Mount Everest is ##"9.766322 m/s"^2##. http://www.physicsclassroom.com/class/1DKin/Lesso...

  • Waiting for answer What is leukocytosis?

    It is an increased amount of white blood cells in the blood. Leukocytosis is often due to an infection somewhere in the body, as white blood cell production increases to help fight...

  • Waiting for answer How many faces does a pentagonal pyramid have?

    ##1+5 = 6 " faces"## A pyramid is named according to the shape of its base. A pyramid consists of a base with any number of sides. The other faces of the pyramid are all triangles w...

  • Waiting for answer What is the time in New York City when it is noon in Denver?

    2 PM Between East Coast and West Coast, there are four time zones, with 1 hour spacing, for the local standard times.. New York is in the east. Denver of Colorado is in the western-...

  • Waiting for answer How do you solve the right triangle ABC if A=80 Degrees, B=...

    ##b=1.76## ##c=10.15## Using your data we can plot the following triangle: Using trigonometry we have: ##b/a=tan(10^o)## with ##a=10## ##b=1.76## Also: ##a=c*cos(10^o)## ##c=10.15##...

  • Waiting for answer What are autosomes called?

    Autosomes present in all cells of the organisms. they control somatic characteristics of an organism In human diploid cell 44 chromosomes are autosomes the rest two are sex chromosomes

  • Waiting for answer How do you calculate the number of valence electrons in a mo...

    The number of for molecules can be calculated by adding the of all the atoms that form that respective molecule. Here are some examples ##CO_2##: Each carbon dioxide molecule is formed from 1 C atom and 2 O atoms. We know that C has 4 and that O has 6 valence electrons, which means that t...

  • Waiting for answer Which states benefited from the three-fifths compromise?

    I would like to add that this compromise gave the South much more political power and changed history. For instance, in the Election of 1800, Thomas Jefferson defeated incumbent John Adams, but had there been no Three-Fifths Compromise, Adams would have won the election. Not only did the compromise...

  • Waiting for answer What causes a nova explosion?

    When a star suddenly flare up for short period it is called NOVA.. Some stars are binaries. they rotate at common center of mass. When one become red giant the size increases and the...

  • Waiting for answer How do you Calculate the mass in grams of NH4Cl that must be...

    ##"36.2 g NH"_4"Cl"## Adding ammonium chloride, ##"NH"_4"Cl"##, to an ammonia solution will effectively create a that contains ammonia, a weak base, and the ammonium ion, ##"NH"_4^(...

  • Waiting for answer How do you verify ##(1+cos2x)/(sin2x) = cotx##?

    Since ##cos2x=cos^2x-sin^2x=1-2sin^2x=2cos^2x-1## and ##sin2x=2sinxcosx## then: ##(1+2cos^2x-1)/(2sinxcosx)=cotxrArr## ##(2cos^2x)/(2sinxcosx)=cotxrArr## ##cosx/sinx=cotxrArr## ##cotx=cotx##.

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