The organ that is not considered a part of the excretory system is the brain and the correct option is option D.
The excretory system primarily consists of organs and structures involved in the elimination of waste products from the body. The kidney, lungs, and skin are all essential components of the excretory system.
The kidney plays a central role in filtering waste products from the blood and producing urine. The lungs are responsible for the elimination of carbon dioxide, a waste product of cellular respiration, through the process of breathing. The skin, through sweat glands, helps eliminate metabolic waste products such as urea and excess salts through perspiration.
On the other hand, the brain is primarily involved in regulating and coordinating various bodily functions, including cognition, movement, and sensory processing. While the brain plays a crucial role in overall body functioning, it is not directly involved in the excretion or elimination of waste products from the body.
Thus, the ideal selection is option D.
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Answer:
D. BRAIN
Explanation:
The human excretory system includes the lungs, the skin, and the urinary system (kidneys, ureters, bladder, and urethra).
B. SiCl4
C. NaCl
D. Na2O
The compound of an element in period 3 that reacts with water to form a solution with a pH greater than 7 is:
D. Na₂O (sodium oxide)
In period 3 of the periodic table, the elements are sodium (Na) and silicon (Si), among others. Let's analyze the options:
A. SiO₂ (silicon dioxide) does not react with water to form a solution with a pH greater than 7. It is an acidic oxide and can react with water to form a weakly acidic solution.
B. SiCl₄ (silicon tetrachloride) is not a compound that reacts with water to form a solution with a pH greater than 7. It hydrolyzes with water to produce hydrochloric acid, which leads to a decrease in pH (more acidic).
C. NaCl (sodium chloride) does not react with water to form a solution with a pH greater than 7. It is a neutral compound and does not affect the pH of water.
D. Na₂O (sodium oxide) reacts vigorously with water to form sodium hydroxide (NaOH), a strong base. Sodium hydroxide is highly soluble in water and completely dissociates into hydroxide ions (OH⁻) and sodium ions (Na⁺). The presence of hydroxide ions in the solution makes it basic, resulting in a pH greater than 7.
Therefore, the correct answer is D. Na₂O (sodium oxide).
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There are way more than 5 but I will list the ones I know:
Reaction with acid
Reaction with water
Combustion/Flammability
Combination
Redox
Isomerization
Answer:
NaF
Explanation:
I'm not exactly sure what you are asking for, but this is the formula for sodium fluroride.
We need the diagram to be able to help you with this, please take a screenshot of the diagram.
b. cannot be broken down further.
c. are all composed of carbon.
d. have no mass.
Answer:
B
Explanation:
Atoms are those particles which cannot be broken down further. But, later on the subatomic particles were discovered
John Dalton's Atomic Theory states that atoms are indivisible and cannot be broken down further. They combine to form molecules and are not all composed of carbon. Atoms do have mass.
John Dalton, an English chemist, is famous for his theory of atomic structure, also known as Dalton's Atomic Theory. According to this theory, atoms are the tiniest particles of matter which cannot be divided or broken down further into simpler substances by chemical means. Thus, the correct answer to the question would be (b) - atoms cannot be broken down further.
Atoms can combine in various proportions to form molecules, but they themselves do not contain molecules. Also, not all atoms are composed of carbon, there are many other elements such as hydrogen, oxygen, nitrogen, to name a few. Finally, atoms do possess mass, it is one of their fundamental properties.
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Is mass conserved when 10 g of sodium hydroxide undergoes a chemical change during an interaction with 57 g of copper sulfate? Use complete sentences to support your answer by explaining how this can be demonstrated.
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please use complete sentences for the answer/an explanation, i'm confused on this questionn v( ‘.’ )v ...
Answer:Instead of “theory” scientists use the word hypothesis to describe a possible explanation for a scientific mystery. Theories in science are hypotheses that.
Explanation: