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mezya [45]
3 years ago
8

Chemical changes involve the breaking and making of chemical bonds. TRUE or FALSE.

Chemistry
1 answer:
lubasha [3.4K]3 years ago
4 0
 The answer is TRUE chemical changes do involve breaking and the making of chemical bonds.
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In a living organism, what is a tissue
Rus_ich [418]

Answer:

Tissue is a group of cells.

Explanation:

Human body tissue consists of groups of cells with a similar structure working together for a specific function.

Human body tissue is another way of describing how our cells are grouped together in a highly organized manner according to specific structure and function. These groupings of cells form tissues, which then make up organs and various parts of the body. For example, it's easy to see and feel muscle in the body. Muscle is one of the four types of human body tissue. In this lesson, learn more about the types of tissue and how each functions for a different purpose.

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3 years ago
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When bridges are built, special joints must be used because the material of the bridge shrinks, and without these joints, the ma
marysya [2.9K]

Expansion

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Expansion is the change is size of a body with increasing temperature and tension.

Bridges are built of iron. Iron thermally expands in the presence of increased temperature during the day. The length of the iron will increase by simple fractions. At night, when temperature drops, the bar returns back to its initial position.

  • The allowance for expansion of the metal is made in order to prevent tension within the structure.
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Expansion in gases brainly.com/question/9979757

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6 0
3 years ago
Cl2+2KI→2KCl + I2 is an example of which type of reaction?
Gnoma [55]

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single replacement

Explanation:

3 0
3 years ago
What is the voltage in a circuit is the current is 3 amps and the resistance is 3 ohms
ozzi

Answer:

9

Explanation:

V=I*R

3*3

Thats the answer

7 0
3 years ago
Pls help me !!!! Is for chemistry
Sphinxa [80]

Answer:

Explanation:

1) Molarity of the solution is (0.50/0.75)x1 = 0.66666 Mol/L

2) Molar mass of NaCl is 23+35 = 58g

Molarity = (0.5/58)/0.075 = 0.115 Mol/L

3) Molar mass of Li_{2}SO_{4} = 7x2 + 32 + 16x2 = 78g

Molarity = (734/78)/0.875 = 10.754 Mol/L

5) Molar mass of   Pb(C_{2}H_{3}O_{2})_{4}

= 207.2 + ((12x2) + (1x3) + (16x2))x4

= 207.2 + (24+3+32)x4 = 443.2g

Molarity = (0.0672/443.2)/0.1335 = 0.001135 Mol/L

6) Both are the same.

Solution 1 Molarity = 1.0/1.0 = 1 Mol/L

Solution 2 Molarity = 1.0/1.0 = 1 Mol/L

Molarities of the solutions are the same.

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3 years ago
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