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matrenka [14]
3 years ago
8

My brain hurts. halp​

Chemistry
1 answer:
Lyrx [107]3 years ago
6 0

Answer:

the answer is C ( i hope your teacher explains

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HELP ASAP!!!!!!
harina [27]

that seems very false but I believe its the second one

7 0
4 years ago
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What 2 elements that share the same properties and reactivity as the silicon?
VladimirAG [237]
Two elements that have similar properties has silicon would be above or below silicon. they are germanium or antimony. 
   
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4 years ago
What is the temperature of the freezing point of water in celsius?
LuckyWell [14K]
It is 0 gradus in celcius
6 0
3 years ago
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A given mass of oxygen occupies 500 ml when the
matrenka [14]
Ok we can use boyle’s law (stating that P is proportional to V) to make the equation (P1V1) =(P2V2).
once we’ve done this, we can plug in the numbers:
(800•500) = (200•V2)
and then we get that
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hope this helps!! :)
5 0
4 years ago
A sample of a pure element has a mass of 45.6g and contains 4.19 x 10 23 atoms. Identify the element.
max2010maxim [7]
<h2>Answer:</h2>

    ZINC

<h2>Explanation:</h2>

<em>To identify the element based on the informartion given, we have to find the molar mass since this mass is unique to each element.</em>

            Molar mass = mass ÷ moles

<em>We already know the mass based on the question, as such we now need to find the # of moles.</em>

           Since 1 mole contains 6.02214 × 10²³ atoms

      then let  x moles contain 4.19 × 10²³ atoms <em>(given in the question)</em>

<em>     </em><em> </em>   ⇒   x =  (4.19 × 10²³ atoms  ×  1 mol) ÷ 6.02214 × 10²³ atoms

              x  =  0.69577 mol

<em>Now that we have the moles we can substitute it into the molar mass equation and solve for the molar mass.</em>

           ⇒ molar mass = 45.6 g ÷ 0.69577 mol

           ⇒ molar mass ≈  65.54 g/mol

                    This molar mass is closest to that of ZINC.

7 0
3 years ago
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