Answer: B) 46.7% Si and 53.3% O
Explanation:
To calculate the mass percent of element in a given compound, we use the formula:
Mass of quartz = 5.05 g
Mass of silicon = 2.36 g
Mass of oxygen = Mass of quartz - mass of silicon = 5.05g - 2.36 g = 2.69 g
Thus the percentages of silicon and oxygen in quartz are B) 46.7% Si and 53.3% O
Answer: D. Circulatory System
Explanation: The circulatory system transports gases (oxygen, carbon dioxide), nutrients, and wastes found in the blood throughout the body.
Answer:
Protons
Explanation:
Protons are worth 1, while neutrons are neutral and are worth zero.
A solution is a mixture containing particles that settle out of the mixture if left undisturbed. A measure of how much solute can dissolve in a given amount of solvent at a specific temperature. The amount of solute dissolved is large in relation to the amount of solvent present.