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Veseljchak [2.6K]
3 years ago
5

Chem Data Analysis help plzz2.6 x 10⁸ ÷ 9.0 x 10¹⁰​

Chemistry
1 answer:
statuscvo [17]3 years ago
5 0
The 8 is repeating.2.8 times 10 to the power of 17
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3 years ago
One difference between mixtures and pure substances is that
defon

Answer:

The mixture is made up of different atoms and pure substance is made up of same type of atom.

The main difference is that mixture can be separated into its component by physical mean while pure substances can not be separated by physical process

Explanation:

Mixture:

  • The properties of the mixture are not same and contains the properties of all those component present in it.
  • it is a combination of one or more Pure substances and can be separated by simple physical methods.
  • it have varying boiling and melting point

Examples are:

  • mixture of salt and sand
  • Salt water is mixture of water and NaCl and can be separated by physical mean.
  • Alloys: its a mixture of different metal
  • Air: mixture of gases

Pure Substance:

Pure substances are those made of same type of atoms all elements and compounds are pure substances.

  • it can not be separated by simple physical mean
  • it have very constant and consistent melting and boiling point

Examples are:

  • Water : contain only water molecule
  • All elements: all elements are pure substance made of same atoms
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8 0
3 years ago
Read 2 more answers
How to calculate precision chemistry.
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Answer:

Subtract The <u>mean</u> from each Numbers Given

Hope it helpz!

7 0
3 years ago
I NEED HELP ASAP WILL MARK BRAINLIEST!!!
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The answer is b.) Levi crosses a horse with a donkey to a create a mule. The mule is stronger than both of its parents.
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3 years ago
A solution of hydrogen peroxide, H2O2, is titrated with
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5H2O2 + 2KMnO4<span>+ 3H2SO4 = 5O2 + 2MnSO4 + 8H2O + K2SO4

0,145 moles of KMnO4----------in--------1000ml
x moles of KMnO4---------------in------------46ml
x = 0,00667 moles of KMnO4

according to the reaction:
2 moles of KMnO4------------------5 moles of H2O2
0,00667 moles of KMnO4----------------x
x = 0,01668 moles of H2O2

0,01668 moles of H2O2---------in-----------50ml
x moles of H2O2--------------------in----------1000ml
<u>x = 0,334 mol/L H2O2</u></span>
6 0
3 years ago
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