Molecules and small particles in the atmosphere change the direction of light rays, causing them to scatter. Scattering affects the color of light coming from the sky, but the details are determined by the wavelength of the light and the size of the particle.
Answer:
12.2 g
Explanation:
Step 1: Given data
Mass of O in KClO₄: 5.62 g
Step 2: Calculate the moles corresponding to 5.62 g of O
The molar mass of O is 16.00 g/mol.
5.62 g × (1 mol/16.00 g) = 0.351 mol
Step 3: Calculate the moles of KClO₄ that contain 0.351 moles of O
The molar ratio of KClO₄ to O is 1:4. The moles of KClO₄ that contain 0.351 mol of O are 1/4 × 0.351 mol = 0.0878 mol
Step 4: Calculate the mass corresponding to 0.0878 moles of KClO₄
The molar mass of KClO₄ is 138.55 g/mol.
0.0878 mol × (138.55 g/mol) = 12.2 g
Answer:
One billion
Explanation:
A nanometer is a BILLIONTH of a meter which means it takes one billion to equal a meter
Answer:
0.02564 kg ore contain 10.0 g of nickel.
Explanation:
Given data:
Percentage of nickel in ore = 39.0%
Mass of ore required to have 10 g of nickel = ?
Solution:
39.0% means that 39.0 g of nickel is present in 100 g of ore thus,
39/100 = 0.39
0.39 × X = 10.0 g
X = 10.0 g/0.39
X = 25.64 g
Gram to kilogram:
25.64 g × 1kg /1000 g
0.02564 kg