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hammer [34]
3 years ago
8

What are some observable properties that can be used to identify these metals?

Chemistry
1 answer:
arlik [135]3 years ago
3 0
Measure with a scale. Hoop this Helps!!!
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Determine the amount of heat energy in joules required to raise the temperature of 7.40g of water from 29.0OC to 46.0 OC.
valina [46]

Answer: The amount of heat energy in joules required to raise the temperature is 526 Joules

Explanation:

The quantity of heat required to raise the temperature of a substance by one degree Celsius is called the specific heat capacity.

Q=m\times c\times \Delta T

Q = Heat absorbed = ?

m= mass of substance = 7.40 g

c = specific heat capacity = 4.184J/g^0C

Initial temperature of the water = T_i = 29.0°C

Final temperature of the water = T_f  = 46.0°C

Change in temperature ,\Delta T=T_f-T_i=(46.0-29.0)^0C=17.0^0C

Putting in the values, we get:

Q=7.40g\times 4.184J/g^0C\times 17.0^0C

Q=526J

The amount of heat energy in joules required to raise the temperature is 526 Joules

4 0
3 years ago
Which of the following is a heterogeneous mixture
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Answer:

a heterogeneous mixture is a mixture of two or more liquid substances that are immiscible that is they cannot mix

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4 years ago
A pond has the dimensions of 25 meters long by 20 meters wide. If there are 100 frogs living in the pond, what is the "populatio
sweet-ann [11.9K]

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D. 5 frogs/sq meter

Explanation:

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What change takes place when a liquid absorbs heat energy without increasing its temperature? A. the pressure increases B. it va
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B.

When water is heated, it evaporates.

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4 years ago
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Convert the following word equation into a formula equation
ZanzabumX [31]

Explanation:

Fluorine: F-

Aluminium: Al3+

Bromine: Br-

3F2 + 2AlBr3 => 3Br2 + 2AlF3

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3 years ago
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