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Alex_Xolod [135]
3 years ago
15

One of the primary functions of the digestive system is what

Chemistry
1 answer:
Nikitich [7]3 years ago
8 0

Answer:

Breaks down and absorbs nutrients from the food and liquids you consume to use for important things like energy, growth and repairing cells.

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how would you write equation to show how buffers H2CO3 and NaHCO3 behave when (a) HCl is added and (b) NaOH is added.
Vlad1618 [11]
<span>H2CO3 <---> H+ + HCO3-
NaHCO3 <---> Na+ + HCO3-

When acid is added in the buffer, the excess H+ of that acid reacts with HCO3- to form H2CO3, and due to this NaHCO3 dissociates into HCO3- to attain the equilibrium. and hence there is no net effect of H+ due to pH remain almost constant. when a base is added to the buffer, the OH- ion of base react eith H+ ion present in buffer, then to attain equilibrium of H+ ion, the H2CO3 dissociates to produce H+ ion, but now there is the excess of HCO3- due to which Na+ ion react with them to attain equilibrium of HCO3-. hence there is again no net change in H+ ion due to which pH remain constant.....</span>
8 0
3 years ago
Tristearin and stearic acid are insoluble in water. However, sodium stearate (soap) is soluble. Why is there this difference in
kupik [55]

Explanation:

Sodium stearate , is the soap , it a ionic compound , hence , can easily break to cation and anion , and therefore is soluble in water .It works on the principle of micelle formation .

Tristearin and stearic acid are fatty acids , and have are carboxyl group and have a very huge hydrocarbon chain , making it non polar in nature ,hence is is insoluble in water , since , water is a polar molecule .

7 0
3 years ago
How many millimeters of 12 M HCI will be needed to create a 250-ML solution of 2 HCI?
Anestetic [448]
Call what you have to find is x
nHCl/V=12M 
nHCl=2.0,25=0,5 
->x=0,5.12=6 (600 ml)
6 0
3 years ago
If 12.7 grams of hydrogen reacted with an unknown amount of oxygen, how many grams of water would be produced? (Write a balanced
nirvana33 [79]

Answer:

48 g.

Explanation:

7 0
2 years ago
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Which type of bond is formed from sharing electrons?
Harrizon [31]
Covelant molecules are formed d
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3 years ago
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