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Anvisha [2.4K]
3 years ago
5

In the process of eating, what kind of energy in food is transformed into heat energy by your body?

Chemistry
2 answers:
Ghella [55]3 years ago
8 0

Answer:

c i think

Explanation:

Rama09 [41]3 years ago
4 0

Answer:The chemical energy

Explanation:because The chemical energy in the food you eat is changed into another kind of chemical energy that your body can use. Your body then uses that energy to give you the kinetic energy that you use in everything you do.

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HELP ASAP WILL MARK BRAINLIEST: How many grams of aluminum can be extracted from 5000g of alumina
Lesechka [4]

The grams of aluminium extracted from 5000g of alumina is 2647 grams

<h3>Chemical formula of alumina:</h3>
  • Al₂O₃

Let's calculate the molecular mass of Al₂O₃

Al₂O₃ = 27 × 2 + 16 × 3 = 54 + 48 = 102 g/mol

Therefore,

102 g of Al₂O₃ = 54 g of aluminium  

5000g of Al₂O₃  = ?

mass of aluminium produced = 5000 × 54 / 102

mass of aluminium produced = 270000 / 102

mass of aluminium produced  = 2647.05882353

mass of aluminium produced  = 2647 grams

learn more on mass here: brainly.com/question/14627327

4 0
2 years ago
Which element in group 16 has the greatest metallic character?
uranmaximum [27]

The oxygen family, also called the chalcogens, consists of the elements found in Group 16 of the periodic table and is considered among the main group elements. It consists of the elements oxygen, sulfur, selenium, tellurium and polonium.

5 0
3 years ago
If MnO2 was not added to this reaction, what effect would that have on the production of H2O and O2?
maria [59]
For the answer to the question above, 
I am going to assume that MnO2 is a catalyst most likely breakdown of H2O2 

H2O2----MnO2------> H2O + 1/2 O2 


<span>in that case, B) is answered in the trump suit </span>

--- 
<span>edit: I need to have a plate account to see - which I don't </span>
is it something like 


2H2O2 ---------------> 2H2O + O2 
...............MnO2 

<span>where MnO2 is underneath the arrow, in that case, it means it is a catalyst and production will DRASTICALLY decrease in production</span>
8 0
3 years ago
Approximately how tall is Baker Hill? Don't forget your unit
makvit [3.9K]

Answer:

the elevation is 1,539

Explanation:

5 0
3 years ago
50.0 mL of 0.180 M sodium hydroxide solution is added to 50 mL of 0.200 M lactic acid solution. The reaction, goes to completion
kvasek [131]

Answer:

a) NaOH is the limiting reactant

b) the heat capacity of the system = 418.4 J/K

c) This is an exothermic reaction. The system will release energy on the surroundingd. The surroundings will absorb energy. (502.08J)

d) The reaction releases 502.08 J of heat

e) the molar enthalpy = 55.8 kJ/mol

Explanation:

Step 1: Data given

50.0 mL of 0.180 M sodium hydroxide solution is added to 50 mL of 0.200 M lactic acid solution.

CH3CHOHCO2H + OH- → CH3CHOHCO2- +H20

Step 3: Calculate moles of NaOH

Moles NaOH = Molarity of NaOH * volume

Moles NaOH = 0.180 M * 50*10^-3

Moles NaOH = 0.009 moles

Step 4: Calculate moles of lactic acid

Moles lactic acid = 0.2M *50*10^-3 L

Moles lactic acid = 0.01 moles

Step 5: Calculate limiting reactant

For 1 mole lactic acid, we need 1 mole of NaOH (mole ratio is 1:1)

NaOH has the smallest number of moles. This means <u>NaOH is the limiting reactant.</u> It will completely be consumed (0.009 moles)

There will be remain 0.01 - 0.009 = 0.001 mole of lactic acid.

<em>b. The system can be regarded as 100 g of water, C= 4.184 J/K°mol Calculate the heat capacity of the system.</em>

q = 4.184 J/K*g * 100 grams

q = 418.4 J/K

<em>c) The initial temperature of the system is 22.47 deg. Celsius; the final temperature is 23.67 deg. Celsius. Calculate the amount of heat absorbed by the system.</em>

Since we have an increase of temperature this is an exothermic reaction. This means the system releases heat to the surroundings. The systems does NOT absorb heat. (0J)

The surroundings absorbs heat from the system (502.08 J)

Since they absorbe energy. The enthalpy ΔH will be positive here.

<em>d) Calculate the amount of heat released by the reaction</em>

q = 418.4 * ΔT

q = 418.4 *(23.67-22.47)

q = 418.4 * 1.2

q= 502.08 J

Since the heat is released ΔH (enthalpy) will be negative.

<em>e) Calculate the molar enthalpy of neutralization for lactic acid.</em>

ΔH =(502.08 J) / (0.009 moles = 55786.7 J/mol = 55.8 kJ/mol

Enthalpy will be negative, the molar enthalpy is positive.

5 0
3 years ago
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