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Mice21 [21]
3 years ago
14

Which would react chemically by forming an ionic bond?

Chemistry
1 answer:
Ket [755]3 years ago
7 0
C. Na would form a 1+ ion losing its electron to the Cl to make a Cl- ion. Which make the molecule NaCl.
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Based on the kinetic molecular theory, which of the following statements is correct about a sample of gas at a constant temperat
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C) It has a constant average kinetic energy

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An electron has an uncertainty in its position of 513 pm. What is the uncertainty in its velocity?
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Perform the following operationand express the answer inscientific notation.7.00x10^5 - 5.00x10^4
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Taking into account the scientific notation,  the result of the subtraction is 6.5×10⁵.

<h3>Scientific notation</h3>

First, remember that scientific notation is a quick way to represent a number using powers of base ten.

The numbers are written as a product:

a×10ⁿ

where:

  • a is a real number greater than or equal to 1 and less than 10, to which a decimal point is added after the first digit if it is a non-integer number.
  • n is an integer, which is called an exponent or an order of magnitude. Represents the number of times the comma is shifted. It is always an integer, positive if it is shifted to the left, negative if it is shifted to the right.
<h3 /><h3>Subtraction in scientific notation</h3>

You want to subtract two numbers in scientific notation. It should be noted that when the numbers to be added do not have the same base 10 exponent, the base 10 power with the highest exponent must be found. In this case, the highest exponent is 5.

Then all the values ​​are expressed as a function of the base 10 exponent with the highest exponent. In this case: 5.00×10⁴=0.500×10⁵

Taking the quantities to the same exponent, all you have to do is subtract what was previously called the number "a". In this case:

7.00×10⁵ - 0.500×10⁵= (7.00- 0.500)×10⁵= 6.5×10⁵

Finally, the result of the subtraction is 6.5×10⁵.

Learn more about scientific notation:

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