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  • Waiting for answer What is the mass of ##NaCl## required to prepare 0.5 liters...

    73 g The molecular weight of NaCl is 58.44 g/mol So, one mole of NaCl weighs 58.44 g. A 2.5 M solution is 2.5 moles per liter (Molarity is just the number of moles per liter). The...

  • Waiting for answer What is a complete subject, simple subject, and a verb?

    A complete subject contains the noun along with a group of words that describe it and a simple subject is only the noun. A verb is the action word in a sentence. The yellow colored...

  • Waiting for answer I.e. versus e.g., my teachers use both when she/he is giving...

    Not really, they both mean the same thing and they are both Latin abreviations i.e. stands for "id est", that can be transated : "that is". It is generally used in scientific publica...

  • Waiting for answer What is the structure of the acetal formed by reaction of et...

    The structure of the acetal is ##"C"_6"H"_5"C"("CH"_3)("OCH"_2"CH"_3)_2##. The structure of the acetal is ##"C"_6"H"_5"C"("CH"_3)("OCH"_2"CH"_3)_2##. Ketones react in the presence...

  • Waiting for answer How does nitrogen cycle through the land and ocean ecosystem...

    There are three main ways that nitrogen is cycled in : Biological, Chemical/Physical, and Human. Biological - As nitrogen is taken from the atmosphere, it goes to bacteria in the s...

  • Waiting for answer How do you factor ##8x^3-8##?

    Answer: ##8(x-1)(x^2+x+1)## To factorize the expression, first we remove any obvious common factors of all the terms. Here, 8 divides every term, so we can extract the 8: ##8(x^3-1)## Next we see if there are any factors of the expression ##(x^3-1)##. If there is a solution ##\alpha## to the equ...

  • Waiting for answer What is the electron configuration of Li+?

    ##"Li""^(+): 1s^2## Your starting point here will be the of a neutral lithium atom, ##"Li"##. A quick look in the will reveal that lithium is located in period 2, group 1, and th...

  • Waiting for answer In the cell membrane/plasma membrane/phospholipid bilayer, w...

    Integral proteins act as ion channels, ion pumps and structural support; the peripheral proteins act as cell identity markers. Structure of a cell membrane : Proteins of the cell me...

  • Waiting for answer How can nucleophilic addition of a primary amine give an imi...

    ##R'-NH_2 + (O=)CR_2rarrR'-N=CR_2 + H_2O## The unsaturated carbon centre of the ketone is an electrophile, whereas the primary amine is a potent nucleophile. Bond formation between...

  • Waiting for answer The perimeter of a basketball court is 280 ft. The length is...

    The length is 91 ft. and the width is 49 We're going to solve this problem using system of equations. We will use variable ##l## for length and ##w## for width. Also it's fairly safe...

  • Waiting for answer Why are perfectly elastic collisions unlikely to occur?

    external forces always exist forces are responsible for energy transformations

  • Waiting for answer What is the collective noun for a group of actors?

    Troupe http://www.thefreedictionary.com/troupe

  • Waiting for answer How do I find the class midpoint of scores in the interval 4...

    49.5. In general, the midpoint of a range is equal to ##(("minimum")+("maximum"))/2## In the case of this problem: ##(("minimum")+("maximum"))/2 = (40+59)/2 = 49.5##

  • Waiting for answer What is the difference between extrusive and intrusive volca...

    While I fully agree with Katie's answer, it may be worth addressing the two types of landforms as specifically requested. Extrusive volcanic landforms are lava flows and volcanic cones as built by the accumulation of ashes, cinders and other pyroclastic products of volcanic explosions. Several lav...

  • Waiting for answer How do you solve ##4\times 8*2^{2}##?

    ##4xx8*2^2=128## We can use PEMDAS, we should first start with Parentheses (none here), then , Multiplication, Division, Addition and Subtraction (last three too are not applicable h...

  • Waiting for answer How many carbon atoms are in 10g of CH4 and 20g of C3H8?

    There are ##3.8 × 10^23" C atoms"## in 10 g of ##"CH₄"## and ##8.2 × 10^23" C atoms"## in 20 g of ##"C"_3"H"_8##. ##"C"## atoms in ##"CH"_4## You must convert ##"grams of CH"_4 → "moles of CH"_4 → "molecules of CH"_4 → "atoms of C"## The molar mass of ##"CH"_4"## is 16.04 g/mol. You use this t...

  • Waiting for answer What is the relationship between photosynthesis and cellular...

    makes the glucose that cellular respiration uses to make ATP. Plants are autotrophs , meaning that they make their own food from inorganic substances and sunlight = photosynthesis....

  • Waiting for answer What is an epilogue in a book? Why is it used?

    The purpose of an epilogue is to help flesh out what happens after the story is done. Have you ever read a good book and when you get to the end of the story, that's the last page?...

  • Waiting for answer Mg metal reacts with HCI to produce hydrogen gas. Mg (s) +...

    The reaction releases 7.71 L of ##"H"_2##. Here are the steps to follow: First, write the balanced equation for the reaction. Use the molar mass to convert grams of ##"Mg"##...

  • Waiting for answer How does the rotation of the Earth cause day and night?

    Here's how: is a sphere which orbits . This means that half of it faces towards the sun while the other half faces away. The half that is facing towards the sun is experiencing day...

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