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mixas84 [53]
2 years ago
7

In your lab group, you are in investigating the properties of matter. Your teacher gives you several unknown substances to ident

ify. Select ALL of the PHYSICAL properties that might help you differentiate between the unknowns.
A: Color
B: Texture
C: Flammability
D: Boiling point
E: Reaction with acid
Chemistry
2 answers:
yulyashka [42]2 years ago
6 0
A B and D
Explanation: I got it right on USATP
DIA [1.3K]2 years ago
6 0

A B and D

Explanation: I got it right on USATP

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Which of the following solutions is acidic? [H3O+] = 1.0 x 10-10 M [H3O+] < 1.0 x 10-7 M [OH-] = 1.0 x 10-10 M [OH-] = 1.0 x
Burka [1]

Answer:

[OH-] = 1.0 x 10-10 M

Explanation:

The acidity of a solution can be determined directly from the concentration of the hydrogen ions and indirectly from the concentrations of the hydroxide ions.

Generally, for a neutral solution we have;

[H3O+] = [OH-] = 1.0 x 10-7 M

For an acidic solution;

[H3O+] > 1.0 x 10-7 M

[OH-] < 1.0 x 10-7 M

Comparing the options the correct option is;

[OH-] = 1.0 x 10-10 M

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3 years ago
How many moles of pcl5 can be produced from 28.0 g of p4 (and excess cl2)?
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P₄ + 10Cl₂ ---> 4PCl₅
stoichiometry of P₄ to PCl₅ is 1:4
number of moles of P₄ reacted - 28.0 g / 124 g/mol = 0.22 mol 
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according to molar ratio of 1:4
number of PCl₅ moles formed  -0.22 mol x 4 = 0.88 mol 
0.88 mol of PCl₅ is formed 

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Answer:

a.

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ii. A bee sting - Toothpaste

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