A mixture is made by combining 1.61 lb of salt and 5.37 lb of water. What is the percentage of salt (by mass) in this mixture?

Hey okau

Explanation:

X/100% = part / whole

X/100% = 1.62 / (1.62 + 4.81) = 0.252

X = 25.2%

Electromagnetic radiation is made up of waves that are composed of photons which travel at the speed of light,  

c

, in a vacuum, which is exactly 299,792,458 m/s, usually rounded to three significant figures as  

3.00

x  

10

8

m/s

. Ask your instructor for his or her preference. All electromagnetic waves have wavelength and frequency.

Explanation: