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kvv77 [185]
3 years ago
15

5. Why does saliva production in the mouth decrease demineralization?

Chemistry
1 answer:
andreev551 [17]3 years ago
7 0
Saliva's buffering capacity and flow of secretion are directly related to the rate and extent of demineralization. ... Saliva can act as a replenishing source and inhibit tooth demineralization during periods of low pH, while promoting tooth remineralization when the pH returns to a neutral state.
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A scientist makes a boric acid (H3BO3) solution by dissolving 22.5 g of H3BO3 in water to make 750.0 mL of solution. Calculate t
GaryK [48]

Answer:

The correct answer is 0.36 mol

Explanation:

First we have to calculate the molecular weight (Mw) of H₃BO₃ from the molar masses of the elements:

Mw(H₃BO₃)= 3 x Molar mass H + Molar mass B + (3 x Molar mass O)

                  = 3 x 1 g/mol + 10.8 g/mol + (3 x 16 g/mol)

                  = 61.8 g/mol

The molecular weight indicates that there are 61.6 grams per mol of substance. The scientist has 22.5 g, thus we can calculate the number of moles of H₃BO₃ by dividing the mass into the molecular weight as follows:

Number of moles of H₃BO₃ = mass/Mw= (22.5 g)/(61.8 g/mol) = 0.36 mol

There are 0.36 mol of H₃BO₃ in 750.0 mL of solution.

6 0
3 years ago
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In an ionic bond:
inna [77]
Correct answer is 
<span>D. One atom accepts electrons from another.</span>
8 0
3 years ago
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How many grams of O2 are produced as 0.033 mol of water decompose
PolarNik [594]

Answer:  This can be quickly solved with "traintracks"

Explanation:

You start w/ grams of water and want to find moles of oxygen gas produced.  

So you want to Convert:  

Grams of water -> moles of water -> moles of oxygen gas.  

The two things you need to know to set up the tracks are:  

1)Molar mass of water- H2O  

Hydrogen - 1.008(x2)  

Oxygen - 16.00  

Water - 18.016

6 0
3 years ago
Name three pure elements and three pure compounds​
VARVARA [1.3K]

Answer:

Pure elements:

Hydrogen(H)

Nitrogen(N)

Magnesium (Mg)

Pure Compounds:

Oxygen gas(O2)  

Water (H2O)  

Ammonia (NH3)

Explanation:

Hope it helps.Please mark me brainliest.^-^

5 0
2 years ago
What does the principle of faunal succession state?
svetoff [14.1K]

Answer:

Explanation:

about 7000

3 0
3 years ago
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