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2 years ago

Consider the reaction of copper(II) oxide with aluminum metal to produce copper metal and aluminum oxide:

Chemistry

1 answer:

maxonik [38]2 years ago

5 0

Answer:

kdkekejdjejeneneenendjenejekeke dhdhehe

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What two states of matter are found during melting

kondaur [170]

Answer:

solid and liquid

Explanation:

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3 years ago

How many joules of heat are required to heat 25.0 g of isopropyl alcohol from the prevailing room temperature, 21.2 oC, to its b

valentinak56 [21]

Answer:

3984.12 J joules of heat are required to heat 25.0 g of isopropyl alcohol to its boiling point.

Explanation:

$Q=m\times c\Delta T=m\times c\times (T_2-T_1)$

Where:

Q = heat absorbed or heat lost

c = specific heat of substance

m = Mass of the substance

ΔT = change in temperature of the substance

$T_1$ = Initial temperature of the substance

$T_2$ = Final temperature of the substance

We have mass of isopropyl alcohol = m = 25.0 g

Specific heat of isopropyl alcohol = c = 2.604 J/g°C

Initial temperature of the isopropyl alcohol = $T_1=21.2^oC$

Final temperature of the isopropyl alcohol = $T_2=82.4 ^oC$

Heat absorbed by the isopropyl alcohol to boil:

$Q=25.0 g\times 2.604 J/g^oC\times (82.4^oC-21.2^oC)=3984.12 J$

3984.12 J joules of heat are required to heat 25.0 g of isopropyl alcohol to its boiling point.

7 0

3 years ago

What gas is produced when calcium metal is dropped in water

topjm [15]

Hydrogen gas

Calcium + Water. In the following demonstration, a chunk of calcium metal is dropped into a beaker of distilled water. After a second or so, the calcium metal begins to bubble vigorously as it reacts with the water, producing hydrogen gas, and a cloudy white precipitate of calcium hydroxide.

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3 years ago

How many atoms of phosphorus are in 3.30 mol of copper(II) phosphate?

otez555 [7]

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3 years ago

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Palmitic acid, derived from palm oil, is one of the most common fatty acids found in butter, cheese, milk, and meat.

Pie

Answer:

a. True

Explanation:

Palmitic acid is the acid found in animals and plants. It is the saturated acid that contains fats. It is extracted from palm oil and from fat sources like butter, cheese, milk and meat. It is added in milk with low fat content to add Vitamin A in it. The fat content of palmitic acid is very high. excessive consumption of palmitic acid leads to heart diseases and life risks.

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3 years ago