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oksian1 [2.3K]
3 years ago
11

Given the chemical formulas of the following compounds, name each compound and state the rules you used to determine each name.

a. K2S b. FeO c. NH4OH
Chemistry
1 answer:
Ede4ka [16]3 years ago
6 0

Answer:

1.potassium sulphide 2. iron oxide 3. ammonium hydroxide

Explanation:

1. K2S has k+ ion and s2- ion which is known as sulphide ion therefore the name becomes potassium sulfide.

2. FeO has Fe2+ ion and O2- ion which is oxide ion therefore the name becomes Iron Oxide.

3. NH4OH has NH4+ ion hich is ammonium ion and OH- which is hydroxide ion therefore the name becomes ammonium hydroxide.

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Answer:

The temperature is very hot.

Explanation:

The gas around the planet traps the suns heat and makes it the hottest planet in our solar system.

8 0
3 years ago
An ideal gas contained in a piston-cylinder assembly is compressed isothermally in an internally reversible process.
Tju [1.3M]

Answer:

a) \Delta S

b) entropy of the sistem equal to a), entropy of the universe grater than a).

Explanation:

a) The change of entropy for a reversible process:

\delta S=\frac{\delta Q}{T}

\Delta S=\frac{Q}{T}

The energy balance:

\delta U=[tex]\delta Q- \delta W

If the process is isothermical the U doesn't change:

0=[tex]\delta Q- \delta W

\delta Q= \delta W

Q= W

The work:

W=\int_{V1}^{V2}P*dV

If it is an ideal gas:

P=\frac{n*R*T}{V}

W=\int_{V1}^{V2}\frac{n*R*T}{V}*dV

Solving:

W=n*R*T*ln(V2/V1)

Replacing:

\Delta S=\frac{n*R*T*ln(V2/V1)}{T}

\Delta S=n*R*ln(V2/V1)}

Given that it's a compression: V2<V1 and ln(V2/V1)<0. So:

\Delta S

b) The entropy change of the sistem will be equal to the calculated in a), but the change of entropy of the universe will be 0 in a) (reversible process) and in b) has to be positive given that it is an irreversible process.

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Explanation:

I don't know this answer what Hydrogen Helium lithium

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How many moles of copper atoms are in 150g of copper metal
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The answer to this question would be: 2.36 mol

To answer this question, you need to know the molecular weight of copper. Molecular weight determines how much the weight of 1 mol of a molecule has. Copper molecular weight about 63.5g/mol. Then, the amount of mol in 150g copper should be: 150g / (63.5g/mol)= 2.36 mol
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What is 0.0745 in scientific notation?
katen-ka-za [31]

Answer:

7.45 × 10^{-2}

Explanation:

4 0
3 years ago
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