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spin [16.1K]
2 years ago
11

Evaluate importance: - Why does a patch of garbage in the ocean effect humans on land?

Chemistry
1 answer:
andrew-mc [135]2 years ago
3 0

Why does a patch of garbage in the ocean effect humans on land

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Which element is a metalloid out of aluminum, arsenic, carbon, and helium?
Katyanochek1 [597]

Answer:

arsenic

Explanation:helium is a gas and aluminum is a etal and carbon is not a maetalloid

6 0
3 years ago
Cyclohexane, a commonly used organic solvent, is 85.6% c and 14.4% h by mass with a molar mass of 84.2 g/mol. what is its molecu
puteri [66]

The molecular  formula of   organic solvent  is    <em>C6H12</em>


<h2>calculation</h2><h3>find the empirical formula first as in step 1 and 2</h3>

Step 1: f<em>ind the moles of C and H</em>

  • moles =  % composition/molar mass
  •       from periodic table molar mass of C= 12 g/mol while that of H= 1 g/mol
  • moles is  C is therefore = 85.6/12=  7. 13 moles
  •  moles of H=  14.4/1 - 14.4 moles

  Step 2:  <em>calculate the mole  fraction  by dividing each mole by smallest number of mole(7.13)</em>

  • that is C= 7.13/7.13 = 1

         H=  14.4/7.13 =2

the empirical formula is therefore = CH2

<h2>Then calculate the molecular formula from empirical formula</h2>

step 3: divide the  grams molar mass  by empirical formula mass

               empirical formula mass =  12+(1 x2) = 14 g/mol

    = 84.2/ 14 = 6

step 4: multiply  each of the subscript  within the empirical  formula with the value gotten in step 3

  • that is  [CH2]6 = C6H12  therefore the molecular formula = <u>C6H12</u>
8 0
2 years ago
What is the shape of pure carbon fullerenes?
pshichka [43]

Answer:

The correct answer is Hollow Sphere.

7 0
3 years ago
What is a DNA fingerprint and why is it considered individual evidence?
Ilia_Sergeevich [38]

Answer:

<em>DNA fingerprinting is a laboratory technique used to establish a link between biological evidence and a suspect in a criminal investigation.</em><em> </em>

<em>A DNA sample taken from a crime scene is compared with a DNA sample from a suspect. If the two DNA profiles are a match, then the evidence came from that suspect.</em>

5 0
2 years ago
Which sample of copper has atoms with the lowest average kinetic energy?
algol [13]
I believe your answer is 40g 15*C I hope that helps.
4 0
3 years ago
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