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nalin [4]
3 years ago
15

A company wants to develop audio speakers using an inexpensive type of plastic that has a very high quality of sound output. Whi

ch customers would most likely give a high evaluation of this product?
A. those who want to save money and will use the product for only a few years
B. those who want a top-quality product no matter how much it costs
C. those who want to save money and use the speakers for a long time
D. those who want a long-lasting product and are willing to pay a high price
Chemistry
1 answer:
olga nikolaevna [1]3 years ago
6 0

Answer:

a

Explanation:

Just took the test

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In the process of attempting to characterize a substance, a chemist makes the following observations. Which are physical propert
Nitella [24]

Answer: a) The substance is a silvery white, lustrous metal :physical property.  

b) It melts at 649°C and boils at 1105°C : physical property.  

c) Its density at 20°C is 1.738 g/cm^3: physical property.  

d)  The substance burns in air, producing an intense white light : chemical property

Explanation:

Chemical property is defined as the property of a substance which is observed during a reaction where the chemical composition identity of the substance gets changed.

Physical property is defined as the property which can be measured and whose value describes the state of physical system. For Example: State, density etc.

a) The substance is a silvery white, lustrous metal is a physical property

b) It melts at 649°C and boils at 1105°C is a physical property.  

c) Its density at 20°C is 1.738 g/cm^3 is a physical property.  

d) The substance burns in air, producing an intense white light is a chemical property

7 0
4 years ago
Does the universe have air in it between the galxies in it
fenix001 [56]

Answer:

No it does not space does not have oxygen and air is caused by oxygen

hey but this was a really interesting question to ask tho

Explanation:

4 0
3 years ago
Helpppppppppppppppppppppppp
Greeley [361]
B, the height above or below sea level
3 0
3 years ago
What are the sub-particles that make up an atom? (select all that apply) *?
Mrac [35]
The answer should be neutrons electrons and protons
7 0
4 years ago
Brainliest will be given to correct answer :)
Lady_Fox [76]

Answer: \Delta G for the reaction   is -90kJ

Explanation:

The balanced chemical reaction is,

2H_2S(g)+SO_2(g)\rightarrow 3S_{rhombic}(s)+2H_2O(g)

The expression for Gibbs free energy change is,

\Delta G=[n\times G_{products}]-[n\times G_{reactants}]

Putting the values we get :

\Delta G=[3\times G_f{S,rhombic}+2\times G_f{H_2O}]-[2\times G_f{H_2S}+1\times G_f{SO_2}]

\Delta G=[(3\times 0kJ/mol)+(2\times -229kJ/mol)]-[(2\times -34kJ/mol) +(1\times -300kJ/mol)]

\Delta G=-90kJ

Thus \Delta G for the reaction2H_2S(g)+SO_2(g)\rightarrow 3S_{rhombic}(s)+2H_2O(g)   is -90kJ

5 0
3 years ago
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