Answer
Red
Yellow
Blue
Explanation: Decrease in wavelength gives an increase in energy
It can be oxygen in only 1 atom. All elements on the periodic table can stand alone in one atom.
(I took a lucky guess, using some of my knowledge about elements )
Percent yield = [actual yield] / [theoretical yield] * 100
Percent yield = 11.6/16.8 * 100 = 69.05%
Question 6
a) B
b) A
Question 7
a) Iron
b) oxygen, water
c) i) Galvanizing
ii) Painting
Answer:
7.93 × 10⁻¹³ km/s
Explanation:
Step 1: Given data
Rate of growth of the fingernails (r): 2.50 cm/year
Step 2: Convert "r" from cm/year to km/year
We will use the following conversion factors.
Step 3: Convert "r" from km/year to km/s
We will use the following conversion factors.
2.50 cm/year is equal to 7.93 × 10⁻¹³ kilometers/second.