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  • Waiting for answer Are there any theories explaining why Venus rotates backward...

    There are two theories - a collision theory and a gravitational-tidal theory. The first theory suggests that when the solar system was being formed, Venus (like Earth) may have exper...

  • Waiting for answer Anthony has 63 toy cars and 84 toy trucks. He wants to divid...

    ##21## ##LCD ( 63,84)## (i.e. largest common divisor) ##= 21## He could have ##3## groups of ##21## cars and ##4## groups of ##21## trucks.

  • Waiting for answer Where are reactive metals located on the periodic table?

    alkali metals are very reactive and they are on the left side of the PT how every halogens are extremely reactive as well but they are on the right.

  • Waiting for answer What's the balanced equation for magnesium and hydrochloric...

    The reaction between magnesium and hydrochloric acid combine to form a salt of magnesium chloride and release hydrogen gas. This single replacement reaction is a classic example of a metal reacting in an acid to release hydrogen gas. The balanced chemical equation is: ##Mg_((s))+ 2HCl_((aq))rarrMgC...

  • Waiting for answer Calculate the mass density of a pure sample of oxygen gas at...

    The of ##"O"_2## under these conditions is is 0.83 g/L. We can use the to solve this problem. ##color(blue)(|bar(ul(color(white)(a/a)PV = nRT color(white)(a/a)|)))" "## Sinc...

  • Waiting for answer Why isn't carbon monoxide just called carbon oxide?

    The name carbon oxide is too vague. Carbon and oxygen can bond to form more than one possible compound. For example: CO = carbon monoxide ##CO_2## = carbon dioxide The name needs t...

  • Waiting for answer How do you calculate standard molar enthalpy of formation?

    You use the standard of the reaction and the enthalpies of formation of everything else. For most chemistry problems involving ##ΔH_f^o##, you need the following equation: ##ΔH_(reaction)^o = ΣΔH_f^o(p) - ΣΔH_f^o(r)##, where p = products and r = reactants. EXAMPLE: The ##ΔH_(reaction)^o## fo...

  • Waiting for answer How do you write ##12 3/10## as a decimal?

    ## 12 3/10 = 12.3## Look at what you already know: The whole number is 12, that will be written to the left of the decimal point. The fraction has its denominator as a power of 1...

  • Waiting for answer What is the definition of elastic potential energy?

    Elastic is the potential mechanical energy stored in the configuration of a material or physical system as is performed to distort its volume or shape. Elastic energy occurs when objects are compressed and stretched.

  • Waiting for answer Technetium-99m the isotope notation is 98 TC 43. Is the at...

    The isotope notation for technetium-99m is ##""_43^(99"m")"Tc"##, and its atomic mass is 98.906 u or approximately 99 u. The amu is equal to the number of protons plus the number of neutrons (mass number) because 1 proton = 1 amu and 1 neutron = 1 amu.

  • Waiting for answer How does stirring affect the rate of solution formation?

    Stirring affects how quickly a dissolves in a , but has no effect on how much solute will dissolve. The amount of solute that will dissolve is affected by temperature - more will dissolve at higher temperatures. This is called the solubility of the solute . Graphs of the solubility at different te...

  • Waiting for answer What are the factors of 54?

    The factors of ##54## are ##{1,2,3,6,9,18,27,54}##. The factors of ##54## are ##{1,2,3,6,9,18,27,54}##.

  • Waiting for answer Why was the winter at Valley Forge so difficult?

    Harsh weather, low morale from lengthened contracts, low on supplies, poor health of soldiers. Firstly, many soldiers had been previously wounded in battle, if not dead, from the ba...

  • Waiting for answer An isosceles right triangle has legs of equal length. If the...

    The answer is 4 ##sqrt(2)## inches or 5.64 inches, taking the value of root 2 as 1.41 .. Check the sorts below. I hope it helps ^^ Here are the steps -!

  • Waiting for answer What is the derivative of ##y## with respect to ##x## for ##...

    ##y'=17^x*ln17## The first step is to rewrite ##17^x## as something differentiable. ##y=17^x=e^(ln17^x)=e^(xln17)## ##e^(xln17) ## is differentiable since we can use the : ##d/dx(...

  • Waiting for answer What is acid rain?

    "Acid rain" is a mixture of wet and dry deposition i.e. deposited material from the atmosphere containing higher than normal amounts of nitric and sulfuric acids. Acid Rain: Acid ra...

  • Waiting for answer What factors do 8 and 12 have in common?

    Common factors are ##{1,2,4}## As ##{color(red)1,color(red)2,color(red)4,8}## divide ##8##, these are factors of ##8##. Similarly ##12## has its factors as ##{color(red)1,color(red...

  • Waiting for answer How are coordinate plane quadrants numbered?

    They are numbered counterclockwise. Here is a picture borrowed from hotmath.com : I hope that this was helpful.

  • Waiting for answer Do the 12 cranial nerves (including the Vagus nerve) belong...

    Cranial Nerves and Spinal Nerves belong to Peripheral

  • Waiting for answer What are illustrations of concrete language and abstract lan...

    Concrete language uses words that refer to specific things and actions and the senses. Abstract refers more to general ideas. Concrete language: One worker was pouring concrete, whil...

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