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3 years ago

How many atoms of nitrogen (N) are in this compound? 3 Pb(NO3)4

Chemistry

1 answer:

Studentka2010 [4]3 years ago

4 0

Answer:

12 nitrogen atoms

Explanation:

This is essentially 3 molecules of Lead (IV) Nitrate, And since there were originally 4 nitrogen atoms in this single ionic compound, there are now 12 total

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HELP PLEASE I GIVE 21 POINTS!!!! +BRAINLIEST!!!!!!!

cricket20 [7]

You could write about a fear you may have had as a child, eg. the dark, or underneath the bed, etc...

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3 years ago

Read 2 more answers

Where, approximately, is the negative pole on each of these molecules?

Leni [432]

Orbital shell notation of fluorine is 2. 7 while that of oxygen s 2. 6. This means that these elements (that follow each other in the periodic table) will have high electronegativity in molecules due to their high atomic number (which causes them to strongly attract electron orbital shell closer to their nucleus). NB: Atomic number of a peroid increased from left to right of the periodic table.

Therefore, in the first molecule, the negative dipole would most likely be located between the F atoms In the second molecule the negative molecule would be most likely located in the between the O and F atoms.

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4 years ago

Read 2 more answers

Equation balancing

meriva

Answer:

For a: The balanced equation is $2S(s)+3O_2(g)\rightarrow 2SO_3(g)$

For c: The balanced equation is $2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)$

Explanation:

A balanced chemical equation is one where all the individual atoms are equal on both sides of the reaction. It follows the law of conservation of mass.

For (a):

The given unbalanced equation follows:

$S(s)+O_2(g)\rightarrow SO_3(g)$

To balance the equation, we must balance the atoms by adding 2 infront of both $S(s)$ and $SO_3$ and 3 in front of $O_2$

For the balanced chemical equation:

$2S(s)+3O_2(g)\rightarrow 2SO_3(g)$

For (b):

The given balanced equation follows:

$2Al(s)+3Cl_2(g)\rightarrow 2AlCl_3(s)$

The given equation is already balanced.

For (c):

The given unbalanced equation follows:

$2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+H_2O(l)$

To balance the equation, we must balance the atoms by adding 2 infront of $H_2O(l)$

For the balanced chemical equation:

$2NaOH(s)+H_2SO_4(aq)\rightarrow Na_2SO_4(aq)+2H_2O(l)$

For (d):

The given balanced equation follows:

$C_3H_8(g)+5O_2(g)\rightarrow 3CO_2(g)+4H_2O(g)$

The given equation is already balanced.

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3 years ago

Can scientific laws be proved wrong? Why or why not?

astra-53 [7]

Answer:

The scientific laws have been well proven before they are published so it is difficult to prove mistakes

Explanation:

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3 years ago

Pure research becomes ___ when scientists develop a hypothesis based on the data and try to solve a specific problem

Inessa05 [86]

Answer:

The answer is applied research

Explanation:

Pure research becomes applied research when scientists develop a hypothesis based on the data and try to solve a specific problem.

This is because the pure research try to understand, predict or explain the behavior of different phenomena (the data) while the applied research try to develop new technologies or methods (hypothesis) to take part, intervene and/or create changes on these phenomena and solve a specific problem.

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3 years ago