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Aleksandr-060686 [28]
3 years ago
14

How many steps are in a scientific investigation?

Chemistry
2 answers:
AleksAgata [21]3 years ago
8 0
Theirs eight steps In Scientific investigation
timurjin [86]3 years ago
3 0
There are eight steps
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If 420 joules of heat energy is added to 25 grams of water at 25 degrees celcius, what will be the final temperature of the wate
natka813 [3]

Answer:

T2 = 29°C

Explanation:

Given data:

Heat added = 420 j

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Initial temperature = 25°C

Final temperature = ?

Solution;

Specific heat capacity:

It is the amount of heat required to raise the temperature of one gram of substance by one degree.

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Formula:

Q = m.c. ΔT

Q = amount of heat absorbed or released

m = mass of given substance

c = specific heat capacity of substance

ΔT = change in temperature

Now we will put the values.

420 j = 25 g ×4.18 j/g.°C × (Final temperature - initial temperature)

420 j = 25 g ×4.18 j/g.°C × (T2 - 25°C)

420 j = 104.5  j/°C × (T2 - 25°C)

420 j /104.5  j/°C = T2 - 25°C

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3 years ago
A reaction occurs when solid X is placed into solution Y.
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https://www.wolframalpha.com/

Explanation:

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