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Ksenya-84 [330]
3 years ago
10

When two intermediate chemical equations are combined, the same substance that appears in the same phase can be canceled out, pr

ovided that
A) it is a reactant in one intermediate reaction and a catalyst in the other reaction.
B) it is a product in one intermediate reaction and a catalyst in the other reaction.
C) it is a reactant in one intermediate reaction and a product in the other reaction.
D) it is a reactant in both of the intermediate reactions.
Chemistry
2 answers:
Gnesinka [82]3 years ago
4 0
The correct answer in here is <span>it is a reactant in one intermediate reaction and a product in the other reaction. So your option is C. This one explains itself perfectly. I hope this can help you a lot </span>
aalyn [17]3 years ago
3 0

<u>Answer:</u> The correct answer is Option C.

<u>Explanation:</u>

When two intermediate chemical equations combine, the same substance which appears in the same phase on the reactant side can be cancelled out only when it also appears in the same phase on the product side.

<u>For example:</u> The conversion of diamond to graphite follows two intermediate steps, which are written as:

C(s)_{diamond}+O_2(g)\rightarrow CO_2(g)

CO_2(g)\rightarrow C(s)_{graphite}+O_2(g)

As, carbon dioxide and oxygen gases are present in the same phase and in opposite sides of the chemical reaction. So, it can be cancelled out.

Net reaction follows:  C(s)_{diamond}\rightarrow C(s)_{graphite}

Hence, the correct answer is Option C.

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You add 100.0 g of water at 52.0 °C to 100.0 g of ice at 0.00 °C. Some of the ice melts and cools the water to 0.00 °C. When the
lara31 [8.8K]

Answer:

m_{ice} = 65.336\,g

Explanation:

Accoding to the First Law of Thermodynamics, the heat released by the water melts a portion of ice. That is to say:

Q_{water} = Q_{ice}

(100\,g)\cdot \left(4.184\,\frac{J}{kg\cdot ^{\textdegree}C}\right)\cdot (52\,^{\textdegree}C - 0\,^{\textdegree}C) = m_{ice}\cdot \left(333\,\frac{J}{g} \right)

The amount of ice that is melt is:

m_{ice} = 65.336\,g

5 0
3 years ago
Plz help me with this pt.3
hichkok12 [17]

Answer:

I think the answer is

Our solar system will always be part of the Milky Way.

7 0
3 years ago
This compound, an eight-carbon alkane, serves as the 100 octane standard for gasoline. It has five methyl groups, one quaternary
Reika [66]

Answer:

2,2,4-Trimethyl-pentane

Explanation:

Structural characteristics of the compound is as follows:

  • Has five methyl group
  • Has one quaternary carbon
  • No. double bond
  • Gives four monochloro substitution products

Compound must have straight chain of 5 carbons.

Three methyl substituents are attached to 2 and 4 carbons.

Therefore, IUPAC name of the compound will be 2,2,4-Trimethyl-pentane.

5 0
3 years ago
Calculate the standard entropy of vaporization of ethanol at its boiling point, 352 K. The standard molar enthalpy of vaporizati
Korvikt [17]

Answer : The correct option is, (b) +115 J/mol.K

Explanation :

Formula used :

\Delta S=\frac{\Delta H_{vap}}{T_b}

where,

\Delta S = change in entropy

\Delta H_{vap} = change in enthalpy of vaporization = 40.5 kJ/mol

T_b = boiling point temperature = 352 K

Now put all the given values in the above formula, we get:

\Delta S=\frac{\Delta H_{vap}}{T_b}

\Delta S=\frac{40.5kJ/mol}{352K}

\Delta S=115J/mol.K

Therefore, the standard entropy of vaporization of ethanol at its boiling point is +115 J/mol.K

8 0
3 years ago
Write the name for NaCl
neonofarm [45]

The name for NaCl is Sodium chloride

<h3>Salt and it's examples.</h3>

Salt is defined as the chemical compound that contains both a positively charged cation.and negatively charged anion.

It is formed by the reaction of acid and base is a neutralisation reaction.

Examples of salt include:

  • Sodium Chloride or Common Salt (NaCl)

  • Sodium Hydroxide (NaOH)

  • Sodium Carbonate or Washing Soda (Na2CO3.10H2O)

  • Baking Soda or Sodium Bi-carbonate (NaHCO3)

  • Bleaching Powder or Calcium Hypochlorite.

Therefore another name for salt is common salt.

Learn more about salt here:

brainly.com/question/13655717

8 0
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