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2 years ago

The chemical properties of an atom are related to the arrangement of what

1 answer:

4 0

Chemical properties of an atom are based upon the arrangement of valence electrons (electrons which can be gained, lost, or shared).

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How does molecular shake affect polarity?

PSYCHO15rus [73]

Answer:

I believe its A

Explanation:

A molecule that has a symmetrical shape will be a nonpolar molecule.

7 0

2 years ago

Alum is a compound used in a variety of applications including cosmetics, water purification, and as a food additive. It can be

vlabodo [156]

Answer:

The theoretical yield of alum is 19.873 grams and percent yield for this alum synthesis is 45.33%.

Explanation:

Mass of bottle = 10.221 g

Mass of bottle with aluminium pieces = 11.353 g

Mass of aluminium = 11.353 g - 10.221 g = 1.132 g

Mass of alum and bottle = 19.230 g

Mass of alum = 19.230 g - 10.221 g = 9.009 g

Experimental yield of alum = 9.009 g

Theoretical yield of alum:

$2Al(s) +2 KOH(aq) +4H_2SO_4(aq)+10 H_2O(l) \rightarrow 2 KAl(SO_4)_2.12 H_2O(s)+3H_2(g)$

Moles of aluminium = $\frac{1.132 g}{27 g/mol}=0.041926 mol$

According to reaction, 2 moles of aluminum gives 2 moles of alum.

Then 0.041926 mol aluminium will give :

$\frac{2}{2}\times 0.041926 mol=0.041926 mol$ of alum.

Mass of 0.041926 moles of alum:

0.041926 mol × 474 g/mol= 19.873 g

Theoretical yield of alum = 19.873 g

Percentage yield:

$\% Yield =\frac{\text{Experimental yield}}{\text{Theoretical yield}}\times 100$

Percentage yield of the alum:

$\% Yield =\frac{ 9.009 g}{19.873 g}\times 100=45.33\%$

The theoretical yield of alum is 19.873 grams and percent yield for this alum synthesis is 45.33%.

7 0

3 years ago

Two cities in Germany are located 25 km apart. What is the distance in miles?

gtnhenbr [62]

Answer: about 15 miles or exactly 15.53 miles

Explanation:

3 0

2 years ago

Read 2 more answers

What mass of AgCl is produced when 53.42 g of AgNO3 reacts with 14.19 g of NaCl?

Leya [2.2K]

Answer is: mass of silver chloride is 34,82 g.

Chemical reaction: AgNO₃ + NaCl → AgCl + NaNO₃.

m(AgNO₃) = 53,42 g..
m(NaCl) = 14,19 g.
n(AgNO₃) = m(AgNO₃) ÷ M(AgNO₃).
n(AgNO₃) = 53,42 g ÷ 169,87 g/mol.

n(AgNO₃) = 0,314 mol.

n(NaCl) = 14,19 g ÷ 58,4 g/mol.

n(NaCl) = 0,242 mol; limiting reactant.

From chemical reaction: n(NaCl) : n(AgCl) = 1 : 1.
n(AgCl) = 0,242 mol.
m(AgCl) = 0,252 mol · 143,32 g/mol.

m(AgCl) = 34,82 g.

7 0

2 years ago

What mass of NH3 (g) is produced when 2 x 10^23 molecules of N2 reacts

Ronch [10]

Answer:

m=8.58

Explanation:

$n = \frac{m}{mr}$

N=n÷la

7 0

2 years ago