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eimsori [14]
4 years ago
13

Which elements did curies discover

Chemistry
2 answers:
MrRissso [65]4 years ago
7 0
I believe it is polonium and radium<span />
Contact [7]4 years ago
6 0
Radium, that is the element that he discovered.
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Given the molarity of the solution is3.03*10^{-2}.

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Number of moles of HCl = Molarity * volume of the solution in L

Number of moles of HCl =3.03*10^{-2}*\frac{1000}{10.9}

Number of moles of HCl = 2.7 moles.

Therefore number of moles of HCl in 10.9 ml of the stomach acid is 2.7 moles


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If the length of one side of a square is 12.0 m, what is the perimeter of the square? Express the perimeter with the appropriate
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The perimeter of a square whose length is 12.0 m is 48 cm.

<h2>Further Explanation </h2><h3>Area </h3>
  • Area is a measure of how much space is occupied by a given shape.
  • Area of a substance is determined by the type of shape in question.

For example;

  • Area of a rectangle is given by; Length multiplied by width
  • Area of a triangle = 1/2 x base x height
  • Area of a circle = πr². where r is the radius of a circle,
  • Area of a square = S², Where s is the side of the square.etc.
<h3>Perimeter </h3>
  • Perimeter is defined as the distance along a two dimension shape.  Perimeter of different shapes is given by different formulas

For example;

  • The perimeter of a rectangle = 2(length+width)
  • The perimeter of a triangle = a+b+c; where a, b and c are the sides of the triangle. etc.

In this case;

We are given one side of a square as 12.0 cm

But Perimeter of a square is given by; 4 × s

Thus; Perimeter = 4 × 12 units

                           = 48 units

Keywords; Perimeter, Area

<h3>Learn more about;</h3>
  • Perimeter of a square example: brainly.com/question/3619302
  • Area of a square: brainly.com/question/1322653

Level: Middle school

Subject; Mathematics

Topic: Area and Perimeter

4 0
3 years ago
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