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marta [7]
3 years ago
14

The oceanic crust is made primarily from this type of rock. A) basalt B) halite C) granite D) limestone

Chemistry
1 answer:
masya89 [10]3 years ago
7 0
The answer is A. Basalt rock.

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Hydrogen peroxide can be prepared by the reaction of barium peroxide with sulfuric acid according to the reaction BaO2(s)+H2SO4(
Vesna [10]

Answer:

VH2SO4 = 145.3 mL

Explanation:

Mw BaO2 = 169.33 g/mol

⇒ mol BaO2 = 53.5g * ( mol BaO2 / 169.33 g BaO2) = 0.545 mol BaO2

⇒according to the reaction:

mol BaO2 = mol H2SO4 = 0.545 mol

⇒ V H2SO4 = 0.545 mol H2SO4 * ( L H2SO4 / 3.75 mol H2SO4 )

⇒V H2SO4 = 0.1453 L (145.3 mL)

6 0
3 years ago
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What is the molar mass of Ca(NO3)2?
Valentin [98]
The answer to the molar mass of Ca(NO3)2 is gonna be C. 164.1 g/mol



3 0
3 years ago
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Can someone please help me with this question
12345 [234]

Explanation:

a) 3Pb(NO3)2 + Al2(SO4)3 ---> 3PbSO4 + 2Al(NO3)3

Double displacement

b) 2Cl2 + 3O2 ---> 2Cl2O3

Synthesis

c) 2Fe2O3 + 3C ---> 4Fe + 3CO2

single displacement

8 0
3 years ago
Whose atomic model could be described as a positive, solid sphere in which electrons are disbursed? A) Rutherford B) Dalton C) T
goldfiish [28.3K]
Thomson suggested the model of atom which was a sphere of positive matter within which electronic forces determined the positioning of the corpuscles. The corpuscles were distributed in a uniform sea of positive charge. This was so-called "plum pudding" model.
Answer: C ) Thomson
5 0
3 years ago
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A certain material has a normal freezing point of 10ºC and a normal boiling point of 70ºC. What state is the material in at room
ahrayia [7]

Explanation:

A freezing point is defined as the point in which a liquid state of a substance changes into solid state.

Whereas boiling point is defined as the point at which liquid state of substance starts to convert into vapor state.

So, a substance is freezing at 10^{o}C and boils at 70^{o}C then it means at room temperature, that is, around 25^{o}C the substance is present in liquid state.

This is because between the freezing and boiling point a substance will always exist in liquid state.

Thus, we can conclude that state of the material at room temperature is liquid.

5 0
3 years ago
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