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motikmotik
3 years ago
8

IF YOU COULD ANSWER + PROVIDE HOW YOU GOT THE ANSWER FOR ANY OF THESE THAT WOULD BE GREAT!

Chemistry
1 answer:
Akimi4 [234]3 years ago
8 0

Answer:

I could do all the questions and explain profusely in under 1hr for cheap price. email me at lyndertutors (at) gm,ail.com for negotiations.

Explanation:

check my profile... I help students in their assignments.

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Give the main conclusion from the 1911
Monica [59]

Answer:

Here's what I get  

Explanation:

From the scattering experiments, Rutherford concluded that the positive charge was concentrated in the nucleus of the atom.

This contradicted the plum pudding model, which assumed that the positive charge was uniformly distributed throughout the atom.

3 0
3 years ago
Which sample contains the greater number of atoms, a sample of Li that contains 6.8 x 10^22 atoms or a 1.97 mole sample of Na?
IrinaVladis [17]

Answer:

                     1.97 moles of Na contains greater number of atoms than 6.8 × 10²² atoms of Li.

Explanation:

                    To solve this problem we will first calculate the number of atoms contained by 1.97 moles of Na and then will compare it with 6.8 × 10²² atoms of Li.

                    As we know that 1 mole of any substance contains exactly 6.022 × 10²³ particles which is also called as Avogadro's Number. So in order to calculate the number of atoms contained by 1.97 moles of Na, we will use following relation,

          Moles  =  Number of Atoms ÷ 6.022 × 10²³ atoms.mol⁻¹

Solving for Number of Atoms,

          Number of Atoms  =  Moles × 6.022 × 10²³ Atoms.mol⁻¹

Putting values,

          Number of Atoms  =  1.07 mol × 6.022 × 10²³ Atoms.mol⁻¹

          Number of Atoms  = 1.18 × 10²⁴ Atoms of Na

Hence,

          1.97 moles of Na contains greater number of atoms than 6.8 × 10²² atoms of Li.

4 0
3 years ago
How many moles of water are<br> in 1.23x10¹8 water molecules?<br> [ ? ]×10[?]
Sergio [31]

Answer:

2.04 x 10⁻⁶ moles H₂O

Explanation:

To find the moles H₂O, you need to multiply the given value by Avogadro's Number. This number is a ratio between molecules and moles, thus granting you the way to convert between both units. It is important to arrange the ratio in a way that allows for the cancellation of units. The final answer should have 3 sig figs to match the sig figs of the given value (1.23 x 10¹⁸ molecules).

Avogadro's Number:

6.022 x 10²³ molecules = 1 mole

1.23 x 10¹⁸ molecules H₂O                     1 mole
---------------------------------------  x  -------------------------------------  =  
                                                    6.022 x 10²³ molecules

=  2.04 x 10⁻⁶ moles H₂O

5 0
2 years ago
What type of energy is converted when fireworks relese heat,light,and sound
shutvik [7]

Rockets, aerial shells, mines, cakes, firecrackers, wheels, fountains (gerbs), lancework, Roman candles and sparklers.

3 0
3 years ago
Read 2 more answers
Why methane has a low melting point
Leno4ka [110]
Simple molecular substances consist of molecules in which the atoms are joined by strong covalent bonds. However, the molecules are held together by weak forces so these substances have low melting and boiling points.
I hope this helps.=^P
5 0
4 years ago
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