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Alexus [3.1K]
2 years ago
10

A flame is the result of a chemical reaction that releases energy. Do you think a similar kind of chemical reaction is happening

in our bodies to provide us with energy from food to do things?
Chemistry
1 answer:
almond37 [142]2 years ago
4 0

Answer:

Chemical reactions that take place inside living things are called biochemical reactions. Explanation:The sum of all the biochemical reactions in an organism is referred to as metabolism. Metabolism includes both exothermic (heat-releasing) chemical reactions and endothermic (heat-absorbing) chemical reactions.

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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
True or false Nitrogen - 15 has 7 neutrons
BaLLatris [955]

Answer:

Yes Nitrogen has 7 Neutrons

Explanation:

3 0
3 years ago
How many moles of no2 are equivalent to 74.3g of no2
AfilCa [17]
<h3><u>Answer;</u></h3>

= 1.615 moles

<h3><u>Explanation</u>;</h3>

The molar mass of NO2

 = 46.01 g/mol

The mass of NO2 given is 74.3 g

Number moles = mass/ molar mass

                        = 74.3 g/ 46.01 g/mol

                       = 1.615 moles

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Coal is mainly made of carbon and there’s oxygen in the air so this burns to produce carbon dioxide. Breathing it can really hurt your lungs.
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