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Ipatiy [6.2K]
3 years ago
9

What determines how the atoms are organized on the periodic table of elements?

Chemistry
1 answer:
tresset_1 [31]3 years ago
4 0
The periodic table of elements arranges all of the known chemical elements in an informative array. Elements are arranged from left to right and top to bottom in order of increasing atomic number. Order generally coincides with increasing atomic mass. The rows are called periods.
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Question 6(Multiple Choice Worth 2 points)
Rina8888 [55]
4.2 × 10²² atoms Al × (1 mol Al / 6.022 × 10²³) = moles Al

Last one: fraction 1 mole Al over 6.022 × 10²³ atoms Al
8 0
3 years ago
What is the molarity of a solution which has a volume of 3 litres and contains 5.1 moles of Br2?
katrin [286]

Answer:

The molarity of the solution is 1.7 \frac{moles}{liter}.

Explanation:

Molarity (M) or Molar Concentration is the number of moles of solute that are dissolved in a certain volume.

The molarity of a solution is calculated by dividing the moles of the solute by the volume of the solution:

Molarity=\frac{moles of solute}{volume of the solute}

Molarity is expressed in units \frac{moles}{liter}.

In this case, you know:

  • moles of solute= 5.1
  • volume= 3 L

Replacing:

Molarity=\frac{5.1 moles}{3 L}

Solving:

Molarity= 1.7 \frac{moles}{liter}

<u><em>The molarity of the solution is 1.7 </em></u>\frac{moles}{liter}<u><em>.</em></u>

4 0
3 years ago
How many grams of cuno3 will be required to make 1.00 l of 0.420 m solution?
7nadin3 [17]

Answer:

The answer to your question is:  52.92 g of CuNO₃

Explanation:

Data

grams of CuNO₃ = ?

volume = 1 l

concentration = 0.420 M

MW of  CuNO₃ = 64 + 14 + 3(16) = 126 g

Formula

Molarity = moles / volume

moles = Molarity x volume

moles = 0.420 x 1

moles = 0.420 moles

                                    1 mol of CuNO₃  -------------------  126 g of CuNO₃

                                  0.420 moles CuNO₃ -------------    x

                                    x = (0.420 x 126) / 1

                                    x = 52.92 g of CuNO₃

3 0
3 years ago
Within a conventional light bulb,
aniked [119]

Answer:

D

Explanation:

Solid, Liquid and Gas are the states of matter. Light is neither a solid, a liquid, nor a gas.

4 0
3 years ago
The figure shows a negatively charged sphere and a balloon that has been rubbed with dry human hair. If the two are brought clos
Westkost [7]
TBH I feel as if you want to say they'll attract due to the static electricity but, I can't be too sure. If I do say so myself the balloon will pop due to the static electricity.
4 0
4 years ago
Read 2 more answers
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