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xenn [34]
3 years ago
7

One example of a chemical used in toothpaste is ________

Chemistry
1 answer:
kap26 [50]3 years ago
8 0
Water is a chemical used in toothpaste.

Fluoride in the form of sodium fluoride is another chemical.
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Claudia and her team of scientists develop a new car battery that recharges electric cars at a fast rate.
Doss [256]

Answer: Waste Operators will handle less hazardous material.

Explanation: Since the electric car is electric it produces hazardous material and now that it doesn't it wont.

7 0
3 years ago
PLEASE HELP!<br><br> I’m on the last question!!
boyakko [2]
I’m not too sure because i forgot about this but i thik it’s D, good luck
4 0
3 years ago
For which of these is there an increase in entropy? KCI(aq)+AgNO3(aq)KNO3(aq)+AgCI(s) NaCl(s)NaCl(aq) 2NaOH(aq)+CO2(g)Na2CO3(aq)
vovikov84 [41]

Answer: NaCl (s) → NaCl (aq)

Explanation:

Entropy is often associated with the disorder or randomness of a system. Therefore, in each reaction, it is necessary to evaluate if the disorder increases or decreases to understand what happens to the entropy:

1) KCl (aq) + AgNO₃ (aq) → KNO₃ (aq) + AgCl (s) - In this reaction, we have only aqueous reactants in the beginning and in the product we have a precipitate. The solid state is more organised than the liquid, consequently, the entropy decreases.

2) NaCl (s) → NaCl (aq) - In this case, oposite to the first one, we go from a solid state to an aqueous state. The solvation of the ions Na⁺ and Cl⁻ is random while the solid state is very organised. Therefore, in this reaction the entropy increases.

3) 2NaOH (aq) + CO₂ (g) → Na₂CO₃ (aq) + H₂O (l) - In this reaction, the reactants have higher entropy because of the gas CO₂. Therefore, the entropy decreases.

4) C₂H₅OH (g) → C₂H₅OH (l) -  In this reaction, the reactant is a gas and the product a liquid. Therefore, the entropy decreases.

5 0
3 years ago
Which of the following properties is not typical of metallic solids?
guajiro [1.7K]
Could you attach the diagram please
4 0
2 years ago
trace the path of a labeled carbon atom through the biological processes of photosynthesis and respiration. The atom will start
TiliK225 [7]
The carbon atom will get processed by going through the stomata of a leaf. It is then combined with energy to produce something called glocuse or a form or type of sugar. The sugar will be used as energy, tissue and starch for itself. That's basically the fate of the carbon.
6 0
3 years ago
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