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vova2212 [387]
3 years ago
15

What is a base used in toothpaste?

Chemistry
1 answer:
goldenfox [79]3 years ago
6 0

Answer: Option:C

Explanation:

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It might be more suitable because some data cannot use a graph to show data because there is too much data.
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Suppose you had four spoons the same size and shape made out of glass, plastic, steel, and wood. Which spoon handle would get ho
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Answer:

A. steel spoon

Explanation:

A steel spoon will get hot the quickest from the different given spoon. This is because steel is predominantly made up of a metal which shows metallic properties such as heat conduction.

  • Metals have low specific heat capacity which is the amount of head needed to raise 1g of a substance by 1°C.
  • By so doing, metals will conduct heat at a very fast rate.
  • The delocalized electron around the central nucleus plays very important role.

Other properties originating from metallic bonds are ductility, malleability, luster etc.  

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What is the law of conservation of energy? a. Energy is created and destroyed. b. Energy is not created but is destroyed. c. Ene
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Answer:

Energy is neither created nor destroyed.

Explanation:

The law of conservation of energy states that energy can neither be created nor be destroyed. The total energy of an isolated system remains conserved. It never gets 0. It changes from one form of energy to other but never vanishes.

Hence, the correct option is (d) "Energy is neither created nor destroyed"

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How would you detect sulphur in organic compounds​
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sodium fusion is changed to sodium sulphide if sulphur is present in the compound

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. The net ionic equation for the reaction that occurs during the titration of nitrous acid with sodium hydroxide is (a) HNO2 Na
hjlf

Answer:

H^+_{(aq)}+OH^{-}_{(aq)}\rightarrow H_2O_{(l)}

Explanation:

Complete ionic equation : In complete ionic equation, all the substance that are strong electrolyte and present in an aqueous are represented in the form of ions.

Net ionic equation : In the net ionic equations, we are not include the spectator ions in the equations.

Only the species which are present in aqueous state dissociate.

Spectator ions : The ions present on reactant and product side which do not participate in a reactions. The same ions present on both the sides.

(a)

The balanced molecular equation will be,

HNO_2_{(aq)}+NaOH_{(aq)}\rightarrow H_2O_{(l)}+NaNO_2_{(aq)}

The complete ionic equation in separated aqueous solution will be,

H^+_{(aq)}+NO_2^-_{(aq)}+Na^+_{(aq)}+OH^{-}_{(aq)}\rightarrow H_2O_{(l)}+Na^+_{(aq)}+NO_2^-_{(aq)}

In this equation the species present are, Na^+\text{ and }NO_2^- are the spectator ions.

Hence, the net ionic equation contains specie is  

H^+_{(aq)}+OH^{-}_{(aq)}\rightarrow H_2O_{(l)}

6 0
3 years ago
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