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masha68 [24]
3 years ago
12

WILL MARK BRAINLIEST IF YOUR ANSWER IS CORRECT

Chemistry
2 answers:
olga2289 [7]3 years ago
6 0

Answer:

1. <u>Element</u>

2. <u>Compound</u>

3. <u>Heterogeneous</u><u> </u><u>mixture</u>

4. <u>Homogeneous</u><u> </u><u>mixture</u>

5. <u>Homogeneous</u><u> </u><u>mixture</u>

6. <u>Heterogeneous</u><u> </u><u>and</u><u> </u><u>homogeneous</u><u> </u><u>mixture</u>

7. <u>Homogeneous</u><u> </u><u>mixture</u>

8. <u>Heterogeneous</u><u> </u><u>mixture</u>

Anettt [7]3 years ago
3 0
1. Gold is element
4. D
2 b
3c
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An important industrial route to extremely pure acetic acid is the reaction of methanol with carbon monoxide:
Nastasia [14]

The reaction has had a heat that is enthalpy of -22 kJ/mol. The exothermic process has been signaled by the negative sign.

The amount of energy that the system absorbs or releases to create the products is described as the heat of reaction.

The source of the reaction's heat is

H is equal to 3(413 Kj/mol) + 358 Kj/mol + 467 Kj/mol + 1070 Kj/mol = 3134 Kj/mol.

H prod equals 3(413 kj/mol) plus 347 kj/mol plus 358 kj/mol plus 467 kj/mol plus 745 kj/mol, or 3156 kj/mol.

H=3134 kj/mol - 3156 kj/mol = -22 Kj/mol

Negative findings point to an exothermic response.

A chemical process known as an exothermic reaction releases energy in the form of heat or light.

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7 0
1 year ago
Why does knowing the mass of an object not help you identify what material the object is made from?
jeka57 [31]
Because mass is not always the same for objects made from the same material. Just because an object has the same mass as another doesn’t mean they are the same material.
4 0
4 years ago
Why the core is metallic and the lower mantle is not.
Ugo [173]

Answer:

due to the overlaying layers of strata (layers of earth) an high pressure is created at the core. due to this it behaves like an solid rether than being a liquid... the lower mantle is not solid because in this case the overlaying strata doesn't produce that much pressure on it..

Explanation:

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6 0
2 years ago
The empirical formula is:
stepan [7]

Answer:

option c the relative number of atoms of each element using the lowest ratio because empirical formula gives the simplest-whole number ration of each element

e.g. the empirical formula of benzeneC6H6 in CH

Explanation:

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4 0
3 years ago
A chemist combine did 3.50g of potassium level with chlorine gas to yield 6.6 7g of potassium for it. Assuming all the potassium
slega [8]

Answer: mass of chlorine reacted is 3.18 g

Explanation:

2 K + Cl2 = 2KCl

no. of moles of K = mass / molar mass

= 3.50 / 39

= 0.0897

no. of moles of KCl = mass / molar mass

= 6.67 / 74.5

= 0.0895  

no. of moles of Cl2 required = number of moles of KCl / 2

= 0.0895 / 2

= 0.0448 moles  

mass of Cl2 required = no. of moles of Cl2 required x molar mass

= 0.0448 x 71

= 3.1808 g ≈ 3.18 g

Therefore mass of chlorine reacted is 3.18 g

4 0
3 years ago
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