Answer:
B. Quartz represents an element as SiO2
Explanation:
A chemical element is a substance composed of only one kind of atom that determines its own unique properties that are different from that of other elements. An element cannot be broken down further as it represents the simplest form a substance can attain.
Chemical elements are usually labelled using symbols. These symbols contain only one capital letter for each element, which cannot excede two alphabets. For example, Silicon is an element with the symbol, Si while Calcium is an element with symbol Ca.
Note: in this question, Quartz (SiO2) is not an element but rather a compound because it is composed of two elements, forming a compound.
The precipitate formed in the reaction has been AgCl. Hence, option B is correct.
The precipitate has been the solid insoluble substance that has been formed as the product in the double displacement reaction.
The precipitate settles down in the aqueous reaction mixture and are resulted from the double displacement reaction.
<h3>Which one is the precipitate?</h3>
The reaction of silver nitrate and KCl has been:
The reactants in the reaction are in the aqueous form. Thus, silver nitrate and KCl are aqueous.
The potassium nitrate has been an aqueous solution, while the silver chloride has been the solid product that precipitates out.
Thus, the precipitate formed in the reaction has been AgCl. Hence, option B is correct.
Learn more about precipitate, here:
brainly.com/question/5019199
Answer:
Photosynthesis is the process by which plants use sunlight, water, and carbon dioxide to create oxygen and energy in the form of sugar
Explanation:
Answer:
1. B 2. C 3. B or C 4. A 5. A
Answer:
The Earth's atmosphere is made up of approximately 78% nitrogen