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Sonja [21]
3 years ago
9

How many atoms are in sodium sulfide?

Chemistry
1 answer:
Airida [17]3 years ago
6 0
Sodium sulfide has a formula (Na 2 S ; i.e. 2 Sodium atoms to every 1 Sulfur atom) Therefore a single molecule of sodium sulfide has 3 atoms.
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According to anthropologists, why did people moved to the Northern Nile River? (Site 1)
balu736 [363]

Answer:

The correct answer is - it provided water, food, transportation, and excellent, fertile soil for growing food.

Explanation:

People of Egypt moved to the northern Nile river due to various reasons. In this region, the soil is very excellent and helps in growing crops as the soil is fertile due to the appropriate climate and water resources.

It is aso helps in selling and transporting the products as it was a trade route at the time. As it is known Egypt has almost no rainfall so the only way crops can get water is through the Nile river.

4 0
3 years ago
What is the final temperature of a 27.2-gram wooden block that starts at 23.4°C and loses 759 joules of energy? The specific hea
sattari [20]

T = final temperature  of the block

T₀ = initial temperature of the block = 23.4 °C

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m = mass of the wooden block = 27.2 g

Heat lost from the block is given as

Q = m c (T - T₀)

inserting the values

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T = 7.1 °C

6 0
4 years ago
The periodic table organizes elements according to INCREASING
jeyben [28]
C would be the correct answer
5 0
3 years ago
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What is the Law of Definite Composition and how does it apply to pure substances and mixtures?
Lyrx [107]

Answer:

The Law of Definite Proportions ensures that chemical compounds are always created using the same proportions, regardless of the amount of the compound which is being made

5 0
3 years ago
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Do you think that the human being is the center of the universe?
Andrej [43]
I think that the sun is the center of the universe, not a human being. Everything revolves around the sun, not someone. U know when to sleep, when the time is, and when to wake up based on the sun. All the planets revolve around it. This is why I think the sun is the center of the universe, not a human being.
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