#34,000
#30,000
#15,000
#4,000
Correct answer is B
No explanation has been provided for this answer.
#210,000
#202,000
#195,000
#184,000
Correct answer is B
No explanation has been provided for this answer.
#6,300
#4,300
#3,700
#2,700
Correct answer is A
No explanation has been provided for this answer.
The only metal that is anti-bacterial is?
Iron
Sodium
Alluminium
Copper
Correct answer is D
Aluminium sulfate is a salt soluble in water and is mainly used as a coagulating agent in the purification of drinking water.
Copper demonstrated the greatest antimicrobial activity. The silver coatings demonstrated the second most antimicrobial surface.
11.%
22.2%
10%
20%
Correct answer is C
Mass of Solution = Mass of Solute + Mass of Solvent → 20g + 180g
: Mass of Solution = 200g
Mass Percent = \(\frac{Mass of Solute}{Mass of Solution} * 100%\)
Mass percent = \(\frac{20}{200} * 100%\)
Mass percent = 10%