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serious [3.7K]
3 years ago
11

Questions in pic plz help .

Chemistry
1 answer:
Paladinen [302]3 years ago
6 0

Answer:

c

Explanation:

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What is the main function of the part labeled Yin the model?
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Answer:

The part labelled Y is the chloroplast and its main function is to produce food for the plant in the reactions of photosynthesis.

Explanation:

Plants are autotrophic organisms in that they are able to manufacture their own food. Plants are able to manufacture their own food due to the presence of the cell organelle known as the chloroplast.  The plant chloroplast has its own DNA and can reproduce independently, from the rest of the cell. They can as well produce amino acids and lipids required for the chloroplast membrane.

Chloroplasts are green-colored membrane-bound organelles found within the plant cell. Their green color is due to the presence of the pigment, chlorophyll. Chlorophyll in the chloroplasts are responsible for absorbing light energy from sunlight and using this absorbed energy to make simple sugars (carbohydrates) from carbon (iv) oxide and water. This is the main function of the chloroplasts in plant cells.

Photosynthesis occurs in the chloroplasts in two reaction steps:

1. The light reaction - involves the splitting of e=water molecules using the energy of sunlight

2. The dark reactions - carbon (iv) oxide from the air is used to produce sugars.

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3 years ago
Chlorine has 7 valence electrons. Hydrogen has 1 valence
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B.1 Chlorine wants 8 Hydrogen has one to give 7 plus on is 8
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3 years ago
Question 3(1 point)
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Answer:

<u><em>Group 8 is a group (column) of chemical elements in the periodic table. It consists of iron (Fe), ruthenium (Ru), osmium (Os) and hassium (Hs). They are all transition metals.</em></u>

Explanation:

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Which statement best explains why so many fossils look different from the millions of species currently living on Earth?
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B. Most species that have lived on earth are now extinct. Ap3x

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Look at the picture of two different substances above. Which substance is a mixture? A. Y and Z
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Answer:

option B is correct.

Y is a mixture in the picture.

Explanation:

Different types of substances combine physically and form a mixture.  

Mixture formed by the combination of two or more substances that that combine in same physical state.

For example mixture of copper sulphate and solid chloride in dry form and that will look like white and blue crystal in a mixture.

The picture Z showing dots of same color and is not a mixture, while picture Y shows dots of different colors clearly indicating that it is picture for mixture.

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3 years ago
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