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3 years ago

My mom is yelling at me Bc of all my missing assignments Ik that’s a me problem but pls help me

Chemistry

1 answer:

cricket20 [7]3 years ago

3 0

A. The gravitational force of the sun increased.
The gravitational pull increases as the mass increases

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Help please Chemistry

dybincka [34]

Answer:Cant see the picture cause its too big

Explanation:

7 0

3 years ago

Hiii please help me to balance the chemical equation:

Fed [463]

Answer:

2Na + 2H2O = 2NaOH + H2

Explanation:

hope this helps

4 0

3 years ago

How can you differentiate the Atomic Structure and the Bohr Model? In other words, how is the Atomic Structure different from th

Tatiana [17]

Answer:

Bohr thought that electrons orbited the nucleus in circular paths; whereas in the modern view atomic electron structure is more like 3D standing waves. Bohr built upon Rutherford's model of the atom. ... He believed that electrons moved around the nucleus in circular orbits with quantised potential and kinetic energies.

Explanation:

8 0

3 years ago

In part 2 of the experiment, you will be analyzing a sample of household bleach. A 0.0854 g sample of household bleach is comple

marysya [2.9K]

Answer:

The correct answer is option d.

Explanation:

$NaClO(aq)+2KI(s)+H_2O(l)\rightarrow NaCl(aq)+I_2(aq)+2KOH(aq)$ ..[1]

$I_2(aq)+2Na_2S_2O_3(aq)\rightarrow 2NaI(aq)+Na_2S_4O_6(aq)$ ..[2]

moles of sodium thiosulfate solution = n

Molarity of the sodium thiosulfate solution = 0.150 M

Volume of sodium thiosulfate solution used = 0.890 mL = 0.00089 L

$n=Molarity\times Volume (L)$

$n=0.150 M\times 0.00089 L=0.0001335 mol$

According to reaction [2], 2 moles of sodium thiosulfate reacts with 1 mol $I_2$ .

Then , 0.0001335 mol of sodium thiosulfate will reacts with:

$\frac{1}{2}\times 0.0001335 mol=0.00006675 mol$ of $I_2$

Moles of $I_2$ = 0.00006675 mol

According to reaction [1], 1 mol of $I_2$ is obatnied from 1 mol of NaClO.

Then 0.00006675 mol of $I_2$ will be obtained from:

$\frac{1}{1}\times 0.00006675 mol=0.00006675 mol$

Mass of 0.00006675 mol of NaClO=

0.00006675 mol × 74.44 g/mol = 0.00496887 g

Mass of sample = 0.0854 g

Percentage of NaClO in sample:

$\frac{0.00496887 g}{0.0854 g}\times 100=5.82\%$

4 0

3 years ago

Solve if an element has a charge of 2+, how many more protons does it have than electrons? protons

Effectus [21]

To determine how many protons are present, simply know or use the following equation

X = number of protons
Y = number of electrons
Z = formal charge of the element

X - Y = Z = 0 for a neutral atom

X - Y = 2

Then to solve for x

X = Y + 2.

This means that we would need an additional 2 more protons than electrons.

8 0

3 years ago