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3 years ago

What does it mean when it asks for the planet’s composition?

Chemistry

2 answers:

Mariulka [41]3 years ago

4 0

Answer:

bussy

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Explanation:

Fynjy0 [20]3 years ago

3 0

Answer: its asking for what gases make up that planet

Explanation:

for example: jupiter is made up of 90% hydrogen ~10% helium and <1% hydrogen.

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When a chemical reaction releases energy it is called what

In-s [12.5K]

When a chemical reaction releases energy it is called Exothermic Reaction.

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3 years ago

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A sample consisting of n mol of an ideal gas undergoes a reversible isobaric expansion from volume Vi to volume 3Vi. Find the ch

kolezko [41]

Answer:

The change in entropy of gas is $\Delta S= nC_{P}ln3$

Explanation:

n= Number of moles of gas

Change in entropy of gas = $ds= \int \frac{dQ}{T}$

$dQ= nC_{p}dT$

From the given,

$V_{i}=V$

$V_{f}=3V$

Let "T" be the initial temperature.

$\frac {V_{i}}{T_{i}}=\frac {V_{f}}{T_{f}}$

$\frac {V}{T}=\frac {3V}{T_{f}}$

${T_{f}} = 3T$

$\int ds = \int ^{T_{f}}_{T_{i}} \frac{nC_{P}dT}{T}$

$\Delta S = nC_{p}ln(\frac{T_{f}}{T_{i}})$

$\Delta S = nC_{p}ln3$

Therefore, The change in entropy of gas is $\Delta S= nC_{P}ln3$

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3 years ago

3) What is the molarity of a solution that has 27.6 g of propanol (C3H2O) dissolved in 325 mL of solution? The molar mass of eth

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Calculate the molarity of a solution that contains 15.7g of caco3 dissolved in enough water to make 275 ml of solution

Iteru [2.4K]

0.570 M (note the capital M, this is molarity. Using m denotes molality. Molarity is represented by moles of solute over the liters of solution. In this problem we are given the mass of the solute and volume of solution. The calculations is follows: (15.7 g CaCO3/275 mL of solution) x (1 mole CaCO3/ 100.0869 g of CaCO3) x (1000 mL of solution/ 1 L of solution) = 0.570 M CaCo3.

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3 years ago

A nonzero net force is called a(n) _____ force.

MrRa [10]

I believe it is called a non-zero net force

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