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Jlenok [28]
2 years ago
13

8 questions please please help i will make you barinliest 1. Photosynthesis is an important process that converts light energy i

nto ____________ energy.
A. Chemical
B.Nuclear
C.Water
D.Thermal

2. This cell would be found in which type of organism?

A.Animal
B.Bacteria
C.Virus
D.Plant

3. All Cells get their energy from glucose, but it must first be broken down in the mitochondria through a process called ______________________.
A. Photosynthesis
B. Cell Respiration
C.Cell Oxidation
D.ATP

4. Which of the following is an advantage for a single-celled organism like the Euglena?
A. It can become very large
B.It does not have to reproduce
C.It can reproduce quickly
D.It does not have to get energy

5.The items listed below were found in a science classroom. How would you describe these items?
A.Models
B.Experiments
C.Varaibles
C.Controls

6. Growth and repair in multicellular organisms are the result of
A.Excretion
B.Locomotion
C.Cell division
D.Decomposition

7. What is the result of cellular respiration?
A.Energy for cell processes is released.
B.Oxygen is released for photosynthesis.
C.Cells undergo decomposition
D.Nutrients are excreted to prevent the buildup of body fat.

8.Why is Photosynthesis important?

A.Makes organic molecules (glucose) out of inorganic materials (carbon dioxide and water).
B.It begins all food chains/webs. Thus all life is supported by this process.
C.It also makes oxygen gas which animals need.
D.All of the above

Chemistry
1 answer:
blagie [28]2 years ago
3 0

d.thermal

d.plant

a.photosynthesis

c.it can produce quickly

b.models

a.excretion

d

d

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A metal X from two oxide A and B .3.oogm of A and B contain 0.72 and 1.16g of oxygen respectively.calculate the maases of metal
devlian [24]

Answer:

Explanation:

Firstly, we have to determine the mass of metal X. We can do that by interpreting the first and second statement mathematically.

Metal X can form 2 oxides (A and B).

A + B = 3g

The mass of oxygen in A is 0.72g and the mass of oxygen in B is 1.16g.

The mass of metal X in the two oxides will be the same because it's the same metal.

Thus, we represent the mass of the metal in the two oxides as 2X.

2X + 0.72 + 1.16 = 3

2X + 1.88 = 3

2X = 3 - 1.88

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X = 0.56

<u>Thus, 0.56 g of the metal combines with 0.72g of oxygen in A and 1.16 g of oxygen in B.</u>

Thus, mass of metal (X) in 1g of oxygen in A is

0.56g ⇒ 0.72g

X ⇒ 1

X = 1 × 0.56/0.72

X = 0.78 g

Hence, 0.78g of the metal will combine with 1g of oxygen for A

Also, mass of metal (X) in 1g of oxygen in B is

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X ⇒ 1g

X = 1×0.56/1.16

X = 0.48 g

Thus, 0.48g of the metal will combine with 1g of oxygen for B

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