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kumpel [21]
2 years ago
8

Find How many joules of heat energy are needed to raise the temperature of 10grams of Aluminum from 20*C to 40*C. If the specifi

c heat of Aluminum is 0.90 J/g*C.
Q = McvT.. Hintthe change in temperature before you solve!
Q = (10).(0.90).(40*C-20*C)
Chemistry
1 answer:
dmitriy555 [2]2 years ago
3 0

Explanation:

the answer and the working out is shown above, hope it helps.

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11. Many metals are described as ductile, which means they can be
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Answer:

Option (3)

Explanation:

Ductility of a substance is defined as the property by which a substance can be hammered and change its form into thin, stretched wires. In simple words, the ductile materials can be drawn into thin wires. Some of the examples of ductile substances are gold, copper and silver.

The rocks also have this property which means that they have the capacity to get deformed into enormous strains in the absence of large scale fracturing.

Thus, the correct answer is an option (3).

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3 years ago
What is common about the elements of a period? Select all that apply. They have the same number of electron energy levels. They
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Answer:

They have the same number of electron energy levels.

They transition from a metal to noble gas.

Explanation:

Periods in the periodic table of elements refer to elements in the same row. All the elements in a certain row of the periodic table;

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3 years ago
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frutty [35]

Answer:

2 HCl + Ba(OH)₂ ⇒ BaCl₂ + 2 H₂O

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In a complete neutralization reaction, an acid reacts with a base to form neutral salt and water. To form barium chloride, hydrochloric acid (acid) reacts with barium hydroxide  (base). The balanced chemical equation is:

2 HCl + Ba(OH)₂ ⇒ BaCl₂ + 2 H₂O

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