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Elena-2011 [213]
3 years ago
8

Complete the statement. Ethanol is an elementary substance a compound

Chemistry
1 answer:
Talja [164]3 years ago
6 0

Answer:

a compound is a syllable in the outer world

Explanation:

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alina1380 [7]
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Q3. Which of the following elements is a noble gas?
tensa zangetsu [6.8K]

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The answer is argon. Pls mark as brainliest

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Read 2 more answers
Which physical quantity is not used when determining the stoichiometry in this experiment?
Reptile [31]

The physical quantity that is not used when determining the stoichiometry in this experiment is temperature.

Stoichiometry offers a way in which we can calculate the amount of reactants and products using mass - mole relationship. The mass of reactants, number of moles of reactant, mass of product and mass of precipitate can all be used to determine the stoichiometry.

However, the temperature of a reaction is not used to determine the stoichiometry of the reaction.

Learn more: brainly.com/question/17320375

Which physical quantity is NOT used when determining the stoichiometry in this experiment?

  • mass of precipitate
  • mass of product
  • moles of reactant
  • temperature
7 0
3 years ago
What is the mass of calcium in 2.3•10^23 molecules of calcium phosphate
Katena32 [7]

Explanation:

N(Ca)=3×N(Ca₃(PO₄)₂)=

=3×2.3×10²³=6.9×10²³

6.02×10²³→40g

6.9×10²³→Xg

m(Ca)=X≈45.85g

3 0
3 years ago
Predict whether each reaction proceeds predominately by substitution, elimination, or whether the two combined. Write structure
Colt1911 [192]

Answer:

Reaction 1 - elimination

Reaction 2- substitution

Reaction 3- the two combined

Explanation:

In the first reaction, a strong base, KOH is used in the reaction. Remember that when a tertiary alkyl halide is the substrate, the use of a strong base leads to the domination of E1 mechanism over SN1 mechanism, hence the product shown in the image attached.

In reaction 2, the secondary alkyl halide must undergo an SN2 substitution since an aprotic solvent (THF) is used. This leads to inversion of configuration as shown in the product.

In reaction 3, CN^- is both a strong base and a good nucleophile hence a mixture of substitution and elimination products are formed depending on the nature of the alkyl halide.

8 0
3 years ago
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