Answer:
502.00000000000000000000000000000000
Answer : The correct option is (B).
Explanation :
Body-centered cubic structure (bcc) :
Crystal structure : The manner in which the atoms or ions are spatially arranged.
In bcc arrangement, the atoms are present at eight corners of the cube and at the center of the cube. And the coordination number is 8.
Each unit cell has atoms at the corner and 1 full atom at the center of the cube.
Therefore, the each unit cell has atoms.
Image of bcc structure is shown below.
Magnet to remove the iron, filter paper (or some filter that could trap sand) to remove the sand, and heat up the salt and water, causing the water to evaporate to separate them.
Answer:
Percentage of copper = 88%
Explanation:
Given data:
Mass of copper = 51.2 g
Mass of tin = 6.84 g
Percentage of copper = ?
Solution:
Formula:
Percentage of copper = mass of copper / total mass × 100
Now we will determine the total mass:
Total mass = mass of copper + mass of tin
Total mass = 51.2 g + 6.84 g
Total mass = 58.04 g
Now we will calculate the percentage of copper.
Percentage of copper = 51.2 g / 58.04 g × 100
Percentage of copper = 0.88 × 100
Percentage of copper = 88%
Answer: D) Electrons
Explanation:
Daltons atomic theory was electrons