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emmainna [20.7K]
3 years ago
9

Research Question: What is the relationship between honeybees and the agricultural economy?

Chemistry
1 answer:
uysha [10]3 years ago
8 0

Answer:

Honeybees are responsible for pollinating agricultural crops that make up one-third of our diet, including fruits and vegetables. ... Honeybees are essential for agricultural pollination because they can be housed in colonies, transported to fields at the right time to pollinate flowers, and released.

Honeybees are responsible for pollinating agriculture cops. These crops make up 1/3 of of our diets. Honeybees are essentail and we can use them to poolinate our crops.

Explanation:

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Name two methods of separating mixtures. Describe the property each of these separations based
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Answer:

Distillation and using Chromatography

Explanation:

Distillation:

based on using boiling point.

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Chromatography:

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Mixtures can be separated by physical changes. Please select the best answer from the choices provided
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How many moles of O2 are required to react with 6.6 moles of H2?
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<u>Answer: </u>

<u>For 1:</u> 3.3 moles of oxygen gas is required.

<u>For 2:</u> 14 moles of hydrogen gas is required.

<u>For 3:</u> 1.5 moles of oxygen gas is required.

<u>Explanation:</u>

The chemical reaction of oxygen and hydrogen to form water follows:

O_2+2H_2\rightarrow 2H_2O

  • <u>For 1:</u> When 6.6 moles of H_2 is reacted.

By Stoichiometry of the above reaction:

2 moles of hydrogen gas reacts with 1 mole of oxygen gas.

So, 6.6 moles of hydrogen gas will react with = \frac{1}{2}\times 6.6=3.3mol of oxygen gas.

Hence, 3.3 moles of oxygen gas is required.

  • <u>For 2:</u> When 7.0 moles of O_2 is reacted.

By Stoichiometry of the above reaction:

1 mole of oxygen gas reacts with 2 moles of hydrogen gas.

So, 7 moles of oxygen gas will react with = \frac{2}{1}\times 7=14mol of hydrogen gas.

Hence, 14 moles of hydrogen gas is required.

  • <u>For 3:</u> When 3.0 moles of H_2O is formed.

By Stoichiometry of the above reaction:

2 moles of water is formed from 1 mole of oxygen gas.

So, 3.0 moles of water will be formed from = \frac{1}{2}\times 3.0=1.5mol of oxygen gas.

Hence, 1.5 moles of oxygen gas is required.

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3 years ago
Which of the following is a physical property of matter
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Answer: Physical properties of matter include color, hardness, malleability, solubility, electrical conductivity, density, melting point, and boiling point. For the elements, color does not vary much from one element to the next

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