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3241004551 [841]
3 years ago
8

Is aluminum homogeneous or heterogeneous?

Chemistry
1 answer:
inn [45]3 years ago
8 0
<span> aluminum is an element. All elements are pure substances, so that means they are homogenous.
please mark as brainliest

</span>
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How much heat is required to raise the temperature of 81.0 g of water from its melting point to its boiling point?
Dovator [93]

Answer:

Specific heat of water = 33.89 KJ

Explanation:

Given:

mass of water = 81 gram

Initial temperature = 0°C

Final temperature = 100°C

Specific heat of water = 4.184

Find:

Required heat Q

Computation:

Q = Mass x Specific heat of water x (Final temperature - Initial temperature)

Q = (81)(4.184)(100-0)

Q = 33,890.4

Specific heat of water = 33.89 KJ

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Answer:

His results will be skewed because there was more water than stock solution. Which would cause the percentage solution to be less than 50% therefore the density would be less than the actual value.

Explanation:

The solution will have percentage less than that of 50%. Therefore the density would be less than the actual value.

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Originally, the density is = $\frac{m}{50}$     \left(\frac{\text{mass}}{\text{volume}}\right)

Now after adding extra 10 mL , the density becomes $\frac{m}{60}$.

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3 years ago
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irga5000 [103]

Answer:

The correct answer is -

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In the first question, it is given that the bottle is not opened and therefore, squeezing the bottle filled with a carbonated drink will increase the pressure on the carbonated liquid which forces the bubbles to dissolve or displace or vanish as it moves to empty space.

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thus, the correct answer would be - Can A will make a louder and stronger fizz than can B.

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2 years ago
Which of the following statements is true?
tiny-mole [99]
Statement A is true
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