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3 years ago

Under which conditions does a sample of the same mass of carbon dioxide have the lowest

Chemistry

1 answer:

hjlf3 years ago

8 0

The answer is B, as a solid and a low temperature would result in the lowest entropy value

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Due in minutes! Please Help Solve!

stiks02 [169]

Step by step equation

5 0

3 years ago

When aluminum is placed in concentrated hydrochloric acid, hydrogen gas is produced. 2 Al ( s ) + 6 HCl ( aq ) ⟶ 2 AlCl 3 ( aq )

Dovator [93]

Answer:

The volume of hydrogen gas produced at STP is 4.90 liters.

Explanation:

$2Al (s) + 6 HCl (aq)\rightarrow 2 AlCl_3 (aq) + 3 H_2 (g)$

Moles of aluminium = $\frac{3.60 g}{27 g/mol}=0.1333 mol$

According to reaction , 2 moles of aluminium gives 3 moles of hydrogen gas.

Then 0.1333 moles of aluminium will give:

$\frac{3}{2}\times 0.1333 mol=0.2 moles$ of hydrogen gas

Volume of 0.2 moles of hydrogen gas at STP = V

Temperature at STP = T = 298.15 K

Pressure at STP = P = 1 atm

n = 0.2 mol

PV = nRT (Ideal gas equation)

$V=\frac{nRT}{P}=\frac{0.2mol\times 0.0821 atm L/mol K\times 298.15 K}{1 atm}=4.8956 L\approx 4.90 L$

The volume of hydrogen gas produced at STP is 4.90 liters.

4 0

3 years ago

When ammonium chloride is added to water and stirred, it dissolves spontaneously and the resulting solution feels cold. Without

d1i1m1o1n [39]

When ammonium chloride NH4Cl is added to water and stirred, it dissolves spontaneously (this is the basis for ΔG) for and the resulting solution feels cold (endothermic, the basis for ΔH). Without doing any calculations, we can easily deduce the signs of ΔG, ΔH, and ΔS for this process based on the observations.

ΔG < 0 (it is spontaneous)
ΔH < 0 (because the process is endothermic - it absorbs energy)
ΔS > 0 (entropy increases because of the dissolution of NH4Cl in water

7 0

3 years ago

Sensors detect the concentration of mercaptan molecules in natural gas at various distances from a leaking source . At which loc

chubhunter [2.5K]

One meter in front of the source at this location will a sensor detect the highest concentration of mercaptan.

4 0

3 years ago

Can you force the atoms into new configurations by pushing atoms around? What does this suggest about the configuration of atoms

Temka [501]

You can't because the electrons repel

8 0

3 years ago

Read 2 more answers