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Finger [1]
3 years ago
14

Why aren't there any plate boundaries in Maryland???

Chemistry
1 answer:
algol [13]3 years ago
3 0
Because their are no plate boundaries near or next to maryland

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Which of the following undergoes change during a chemical reaction? A. atomic masses of elements in reactants B. element identit
Virty [35]

Chemical bonds between atoms in reactants undergo change during a chemical reaction.

 

<span>The substance (or substances) initially involved in a </span>chemical reaction<span> <span>are called reactants or reagents. </span></span>Chemical reactions<span> <span>are usually characterized by a </span></span>chemical<span> change, and they yield one or more products, which usually have properties different from the reactants.</span>

 

The correct answer between all the choices given is the last choice or letter D. I am hoping that this answer has satisfied your query and it will be able to help you in your endeavor, and if you would like, feel free to ask another question.

8 0
3 years ago
How much heat is needed to raise the temperature of 55.0 g sample of water by 65.0 oC.
sveticcg [70]

Answer: 14943.5 J

Explanation:

The quantity of heat energy (Q) required to raise the temperature of a substance depends on its Mass (M), specific heat capacity (C) and change in temperature (Φ)

Thus, Q = MCΦ

Given that,

Q = ?

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Φ = 65.0°C

Then, Q = MCΦ

Q = 55.0g x 4.18 J/g°C x 65.0°C

Q = 14943.5 J

Thus, 14943.5 joules of heat is needed to raise the temperature of water.

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What is the mass of 0.250 moles of tungsten
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X it by the molar mass of tungsten
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2 years ago
How do substances change into different substances during chemical reactions​
icang [17]

Answer:

Chemical reaction are irreversible. Some of the example of chemical reaction are cooking, rusting, and burning. During a chemical reaction, the composition of substances changes and the particles rearrange to form a new substance. The new substance formed after chemical reaction of substance has different  physical and chemical properties.

When a chemical reaction occur, the atoms or molecules of the substances change its physical and chemical properties such as while cooking of vegetable, the molecules of vegetable undergo changes in their properties and form a new substance which is different from the earlier.

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