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  • Waiting for answer What is the definition of a covalent compound?

    A covalent compound is a compound which is made up of molecules. Hence,it is also called molecular compounds. These compounds have a covalent bond between them and share electrons. It is usually made up of 2 non metals.

  • Waiting for answer What is the formula for calcium sulfate?

    ##CaSO_4## Calcium is a Group 2 metal; it tends to lose 2 electrons upon oxidation to form the ##Ca^(2+)## ion. Sulfate ion has a formula of ##SO_4^(2-)##. Formation of the binary...

  • Waiting for answer How do you round 0.79 to the nearest tenth?

    If the hundredths place (the second digit after the decimal point) is 5-9, then the tenths place must be rounded up. If the hundredths place (the second digit after the decimal point...

  • Waiting for answer Why is latent heat called hidden energy?

    Scientists in the past were not sure where heat was going during phase changes. In the past scientists investigated how much heat was required to raise the temperature of substances (heat capacity). During these experiments they noted that heating objects (i.e. transferring heat energy to them) c...

  • Waiting for answer How can atomic emission spectra be useful?

    The emission spectra of different are unique, so the spectra given off by hydrogen will be different than that of helium. The different colors of light produced by emission spectra of different elements allows them to be identified. One use of this technique is to identify the elements present in...

  • Waiting for answer How long is an eon?

    Depends Eons aren't necessarily an exact time. They are defined by important events, such as the formation of , etc.

  • Waiting for answer A metal plate weighing 200g is balanced in mid air by throwi...

    0.122 meters per second The plate's acceleration is ##9.8 m/(s^2)##. So, the balls must increase the plate's speed by ##9.8m/s##, so the plate will be balanced. That means that each...

  • Waiting for answer How does gas exerts pressure on its container?

    Consider the molecules of a gas moving at random in a container, as shown below. The molecules are continually colliding with each other and with the walls of the container. When a molecule collides with the wall, they exert small force on the wall The pressure exerted by the gas is due to the su...

  • Waiting for answer Why is cos(0) = 1?

    In terms of the right triangles used to define trigonometric functions cos(x) = adjacent side/hypotenuse; when x=0 the adjacent side = hypotenuse. So cos(0) = 1 Consider a series o...

  • Waiting for answer How do specific heat capacity and thermal conductivity diffe...

    There is a difference between capacity and thermal conductivity. Thermal conductivity : property of a material that indicates its ability to conduct heat. The equation of thermal conductivity is: Specific heat capacity : heat or thermal energy required to increase the temperature of a unit qua...

  • Waiting for answer A perfect cube was found to have a mass of 16.2 g . If the d...

    The thing I want to point out is that is defined as mass over unit of volume. Therefore, regardless of what actual unit you use to express it, you must always have a unit of mass divided by a unit of volume. The of aluminium should therefore be expressed in ##"g/cm"^3##, since ##"g/cm"## is actu...

  • Waiting for answer How do you Use the trapezoidal rule with four equal subdivis...

    First split the interval ##[a,b]## into 4 equal subintervals: ##[x_0,x_1],[x_1,x_2],[x_2,x_3]##, and ##[x_3,x_4]##. (Note: ##x_0=a## and ##x_4=b##) The definite integral ##int_a^b f(x)dx## can be approximated by ##T_4=[f(x_0)+2f(x_1)+2f(x_2)+2f(x_3)+f(x_4)]cdot{Delta x}/{2}##, where ##Delta x...

  • Waiting for answer What did the 14th Amendment do? How did it attempt to prote...

    The 14th amendment grants citizenship to "all persons born or naturalized in the U.S". This protected the African Americans because it gave them the right to freedom so no Caucasian...

  • Waiting for answer What were the results of the Battle of Saratoga?

    The British failed to cut off the New England colonies, The French came in on the side of the colonies and Benedict Arnold was set on the path to becoming a traitor. The British pla...

  • Waiting for answer What are the different types and uses of telescopes?

    All in all there are ##6## kinds of telescopes. Optical telescopes is divided into two, the refracting telescope and the reflecting telescope . This are like observatories in Unive...

  • Waiting for answer What was the significance of the Second Battle of the Marne?

    The Second Battle of the Marne marks the end of the 1918 German resurgence on the Western Front, thereafter initiative rested with the Allies. Following the Soviet signing of the Tre...

  • Waiting for answer What is a mole and why are moles used?

    A mole is a way of counting things. In the early days of chemistry, scientists realized that atoms and molecules react with each other in whole number ratios. That is one atom of something would react with 1 atom or 2 atoms or 3 atoms of something else, but never with, say, 1.33 atoms. Thus, they ne...

  • Waiting for answer In ocean water, is salt a solvent or a solute?

    Salt is a . The thing to remember about is that they are made by dissolving one or more solutes in a . In other words, the substance that is being dissolved is called a solute a...

  • Waiting for answer Write the correct chemical formula to distinguish between?.....

    ##CaS##, ##"calcium sulfide........."## ##Ca(HS)_2##, ##"calcium hydrogen sulfide........."## Calcium forms a ##Ca^(2+)## ion, and thus requires 2 negative charges to form a neutral...

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