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Kobotan [32]
3 years ago
7

A student has a hamburger, french fries, and soda for lunch. These foods must be changed by the digestive system in order to be

used by the body. Which of the following describes the processes that occur during digestion as food enters the mouth and passes through the other organs of the digestive system?
Select one:

matter is only chemically changed during digestion

matter is both physically and chemically changed during digestion

matter is only physically changed during digestion

heat and thermal energy is created as a result of digestion
Chemistry
2 answers:
vlabodo [156]3 years ago
4 0

Answer:

the student will have high blood presure and diabetets

Explanation:

ziro4ka [17]3 years ago
3 0

Answer:

a is the right answer

Explanation:

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What is the percent composition of hydrogen in NH4HCO3?
Readme [11.4K]
To find the Percent Composition of an atom, you use this formula:
Mass of element in the compound you're studying on ( in this case it's 5 since there is 5 Hydrogens) over the mass of the compound (which is here 79), Multiplied by 100 since you want a percent. 
So we get: 
\frac{5}{79} * 100
So you get about: 
0.063 * 100
6.3

So, the percent composition of Hydrogen in NH4HCO3 is 6.3%

Hope this Helps! :D


7 0
3 years ago
Read 2 more answers
g A microwave oven heats by radiating food with microwave radiation, which is absorbed by the food and converted to heat. If the
Sliva [168]

Answer:

The total photons required = 5.19 × 10²⁸ photons

Explanation:

Given that:

the radiation wavelength λ= 12.5 cm = 0.125 m

Volume of the container = 0.250 L = 250 mL

The density of water = 1 g/mL

Density = mass /volume

Mass =  Volume ×  Density

Thus; the mass of the water =  250 mL ×  1 g/mL

the mass of the water = 250 g

the specific heat of water s = 4.18 J/g° C

the initial temperature T_1 = 20.0° C

the final temperature T_2 = 99° C

Change in temperature \Delta T = (99-20)° C = 79 ° C

The heat q absorbed during the process = ms \Delta T

The heat q absorbed during the process = 250 g × 4.18 J/g° C × 79° C

The heat q absorbed during the process = 82555 J

The energy of a photon can be represented by the equation :

= hc/λ

where;

h = planck's constant = 6.626 \times 10^{-34} \ J.s

c = velocity of light = 3.0 \times 10^8 \ m/s

=  \dfrac{6.626 \times 10^{-34} \times 3.0 \times 10^8}{0.125}

= 1.59024 \times 10^{-24} J

The total photons required = Total heat energy/ Energy of a photon

The total photons required = \dfrac{82555 J}{1.59024 \times 10^{-24}J}

The total photons required = 5.19 × 10²⁸ photons

5 0
3 years ago
How many chlorine atoms are there in one molecule of PCI3
Darya [45]

Answer:

Chemical Formula:

For example- for every one mole of the compound PCl3 P C l 3 , it contains 3 moles of Chlorine atom and 1 mole of Phosphorus atom.

Explanation:

• Phosphorus trichloride (PCl3) contains three chlorine atoms and one phosphorus atoms.

8 0
2 years ago
A hot toluene stream, which has mass flow rate of 8.0 kg/min, is cooled by cooling water in a cocurrent heat exchanger; its temp
Alex Ar [27]

Complete Question  

The complete question is shown on the first question

Answer:

a) The duty of the heat exchanger is given as 6.8658 KJ /sec

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Explanation:

The explanation is uploaded on the first and second ,third and fourth image

3 0
3 years ago
What are the benefits and dangers of the Iron element in our daily life?
Digiron [165]
Benefits; helps our red blood cells transport oxygen all around our body
8 0
4 years ago
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