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3 years ago

Salt is an element or a compound?

Chemistry

1 answer:

Afina-wow [57]3 years ago

4 0

Answer:

Salt is a compound

Explanation:

Pure salt consists of the elements sodium and chlorine. Its chemical name is sodium chloride and its formula is NaCl. ... Table salt is a chemically simple combination of two components, sodium and chlorine.

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4. Did the complete process of photosynthesis take place in the way you modeled it in this activity? Explain your answer

weqwewe [10]

Hello!

This question requires a model -- you'll have to do that yourself. However, I can explain the steps for the process:

• Chlorophyll absorbs the sun's energy.

• The energy is used to split water molecules into hydrogen and oxygen.

• The oxygen is released from the leaves into the atmosphere.

• The hydrogen and carbon dioxide glucose (food) for plants.

If you have any more questions related to this assignment, please let me know!

7 0

4 years ago

At a certain temperature, the K p Kp for the decomposition of H 2 S H2S is 0.746 0.746 . H 2 S ( g ) − ⇀ ↽ − H 2 ( g ) + S ( g )

Ivanshal [37]

Answer: The total pressure of container at equilibrium is 0.431 bar

Explanation:

We are given:

Pressure of hydrogen sulfide = 0.240 bar

The given chemical equation follows:

$H_2S(g)\rightleftharpoons H_2(g)+S(g)$

Initial: 0.240

At eqllm: 0.240-x x x

The expression of $K_p$ for above equation follows:

$K_p=\frac{p_{H_2}\times p_S}{p_{H_2S}}$

We are given:

$K_p=0.746$

Putting values in above expression, we get:

$0.746=\frac{x\times x}{0.240-x}\\\\x=0.191,-0.940$

Neglecting the negative value of 'x' because pressure cannot be negative.

So, the equilibrium pressure of hydrogen gas = x = 0.191 bar

The equilibrium pressure of sulfur gas = x = 0.191 bar

The equilibrium pressure of hydrogen sulfide gas = (0.240 - x) = (0.240 - 0.191) = 0.049 bar

Total pressure of the container at equilibrium = $p_{H_2}+p_{S}+p_{H_2S}$

Total pressure of the container at equilibrium = 0.191 + 0.191 + 0.049 = 0.431 bar

Hence, the total pressure of container at equilibrium is 0.431 bar

6 0

4 years ago

What are the parts of this water wheel system?Label the water wheel to show the matter and forms of energy that flow through the

Setler79 [48]

Answer:

Water, wheel and paddles or bucket are the parts and mechanical energy is produced.

Explanation:

The parts of water wheel system are water, wheel and paddles or bucket. The main purpose of water wheel system is to generate useful energy by using the flowing or falling of water on the wheel. We use this water wheel system for the conversion of kinetic energy into mechanical energy such as water mill or hydroelectric plant in which the blades movement is responsible for the generation of electricity.

6 0

3 years ago

If an atom contains 12 protons and 10 neutrons, what's its mass number?

MariettaO [177]

22, because you just add the protons and neutrons (12 + 10)

8 0

3 years ago

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How are nucleic acids and proteins similar?

Virty [35]

The answer is A - they are both polymers.

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3 years ago

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