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Viktor [21]
1 year ago
5

Are two atoms of the same element identical?

Chemistry
1 answer:
xz_007 [3.2K]1 year ago
8 0

Answer:

No It is not

Two of the same atoms are most likely not identical

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What is the MOLAR heat of combustion of methane(CH₄) if 64.00g of methane are burned to heat 75.0 ml of water from 25.00°C to 95
melamori03 [73]

Answer:

-5.51 kJ/mol

Explanation:

Step 1: Calculate the heat required to heat the water.

We use the following expression.

Q = c \times m \times \Delta T

where,

  • c: specific heat capacity
  • m: mass
  • ΔT: change in the temperature

The average density of water is 1 g/mL, so 75.0 mL ≅ 75.0 g.

Q = 4.184J/g.\°C \times 75.0g \times (95.00\°C - 25.00\°C) = 2.20 \times 10^{3} J = 2.20 kJ

Step 2: Calculate the heat released by the methane

According to the law of conservation of energy, the sum of the heat released by the combustion of methane (Qc) and the heat absorbed by the water (Qw) is zero

Qc + Qw = 0

Qc = -Qw = -22.0 kJ

Step 3: Calculate the molar heat of combustion of methane.

The molar mass of methane is 16.04 g/mol. We use this data to find the molar heat of combustion of methane, considering that 22.0 kJ are released by the combustion of 64.00 g of methane.

\frac{-22.0kJ}{64.00g} \times \frac{16.04g}{mol} = -5.51 kJ/mol

8 0
3 years ago
Which of these statements regarding enzymes is FALSE?
Rasek [7]

Answer:

d. Enzymes are broken down by the reactions they catalyze.

Explanation:

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3 years ago
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Please help!!! List three different rock cycles for the following: Sedimentary rock, Metamorphic rock, and Igneous rock.
ValentinkaMS [17]

Sedimentary rocks are formed when different layers of debris ( usually sand ) are forced together under pressure.

Metamorphic rock forms from other types of rock that have been changed by a combination of high heat and pressure.

Igneous rock forms when Lava/Magma cools down

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Answer:

Covalent

Explanation:

Titanium on reaction with chlorine forms Titanium tetra chloride(TiCl4).

Titanium holds strong covalent bond with chlorine in TiCL4

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Benefit you and your life in many ways!
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