The statement is conclusive evidence that mixing sugar in water is a physical change is there is no molecular change. Therefore, option D is correct.
A change known as physical change occurs when the physical characteristics of matter change. Physical changes include those in color, odor, solubility, and the condition of matter, among others.
Melting, turning into a gas, changing strength or durability, changing crystal structure or texture, and changing shape, size, color, volume, or density are a few examples of physical qualities.
Because sugar molecules are spread throughout the water, but the individual sugar molecules remain unaltered, dissolving sugar in water represents a physical change.
Thus, option D is correct.
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D.) There is no molecular change
B.They show how organisms choose to adapt to changing Earth conditions.
C.They prove that structure and location of remains of organisms depict past events.
D.They prove that natural selection always leads to greater complexity in organisms.
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your answer would be C
hope i helped
The electron is the primary atomic particle that determines an atom's chemical behaviour.
Electrons are negatively charged particles that form electron shells or energy levels around an atom's nucleus. They are engaged in the production and breaking of chemical bonds, hence they play an important part in chemical reactions.
The quantity and configuration of electrons in an atom's outermost energy level (valence electrons) are very significant in determining the chemical characteristics of the atom. Because of the identical number of valence electrons, elements in the same group or column of the periodic table frequently show similar chemical behaviour.
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Answer:
Six
Explanation:
Mᵣ = 46
Aᵣ(C) = 0.522 × 46 = 24
Difference = 22
Less 1 O = -16
Aᵣ(H) = 6
The relative atomic mass of the H atoms is 6.
The molecule contains six hydrogen atoms.
Answer:
cells and cell fragments suspended in the plasma
Answer:
1.7L of water.
Explanation:
Given parameters:
Volume of hydrogen gas = 1.7L
Unknown:
Volume of water produced = ?
Solution:
A synthesis reaction is one in which two compounds or molecules combines together to give a product or products.
Synthesis of water from hydrogen gas is represented by the equation below:
2H₂ + O₂ → 2H₂O
We clearly see that;
2 mole of hydrogen gas gives 2 mole of water as the product;
From Gay-lussac's law of combining volume "when gases react, they do so in volumes which bear a simple ratio to one another and to the volume of the product if gaseous, temperature and pressure remaining constant".
2H₂ + O₂ → 2H₂O
2 volumes of hydrogen gas will produce 2 volumes of water
1.7L of hydrogen gas will also produce ; 1.7L of water.