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masha68 [24]
3 years ago
11

How many molecules are in 20,484 grams of H2O?​

Chemistry
1 answer:
alexandr1967 [171]3 years ago
4 0

Answer:

3.4027x10^-22

Explanation:

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In the following reaction, which substance is the precipitate? (NH4)2SO4(aq) + Ba(NO3)2(aq) BaSO4(s) + 2NH4NO3(aq
mariarad [96]
Assuming that the reactants are:

(NH4)2SO4 (aq) + Ba(NO3)2 (aq)

and the products are:

BaSO4 (s) + 2NH4NO3 (aq),

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According to the solubility rules, the following elements are considered insoluble when paired with SO4:

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Therefore, the precipitate will be BaSO4 (s).

5 0
3 years ago
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What is the name of the compound with the formula NaOH ?
vladimir2022 [97]

Answer:

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Explanation:

Sodium hydroxide ( NaOH ) -

Sodium hydroxide is an inorganic compound , and is also called caustic soda and lye .

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The cation and anion of this salt are the sodium cation Na⁺  and the hydroxide anions OH⁻ .

<u>It is highly basic in nature and is soluble in water , and when left open in air it can readily absorb moisture from the air , to form a hydrated sodium hydroxide .</u>

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Which of the following chemical symbols represents the element sodium?
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Chemical symbols on the periodic table represent an element. 

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Which of these reactions involves an acid and a covalent base?
Juli2301 [7.4K]
I think the correct answer would be D. The reaction that involves an acid and a covalent base would be the reaction of sulfuric acid and water or H2SO4 + 2H2O → 2H3O+ + SO42– . The acid would be H2SO4 and the covalent base would be H2O since it is being held by covalent bonds and when in solution it will have equal amounts of OH- and H+ ions.
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Exercise 2: The words below are chopped into pieces. Find
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Explanation:

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