Question

alcohol, ethanol (ethyl alcohol), or n-propanol. Hand sanitizer that contains at least 60% alcohol should

be used. The molecular formula of ethyl alcohol is CH3CH2OH

Answer the following questions, based on the above paragraph,

1. When using an alcohol-based hand sanitizer, which one of the following should not be followed?

(01 mark)

(a) Apply product to the palm of one hand.

(b) Rub hands together.

(c) Rub the product over all surfaces of hands and fingers until hands are dry.

(d) Going near to gas burner or any burning object during or after applying hand sanitizer.

2. The number of molecules of ethanol present in 92 g of ethanol is (01 mark)

(a) 6.022 x 1023

(b) 12.044 x 1023

(c) 18.066 x 1023

(d) 24.088 x 1023​

Answer 1

Answer:

1)The alcohol-based hand sanitizers do not remove dirt and are less effective in killing the virus and bacteria if the hands are soiled. If you need to clean the dirt, use soap and water. For example, after gardening, sports, playing outside, you must avoid using hand sanitizer.

2) The number of molecules of ethanol present in 92 g of ethanol is (a) 6.022 x 1023.