Question

10. The main ingredient found in the hand sanitizer we use are only of ethanol (C2H5OH).
Now calculate the mass of Hydrogen supplied in the bottle in 11.5 gm of ethanol. (Give
answer up to two decimal places).
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Answer 1

Answer:

solution

Explanation:

early 2020, as the outbreak of the novel coronavirus, SARS-CoV-2, spread, hand sanitizer sales began to grow. By March 11, the World Health Organization (WHO) officially upgraded the outbreak to a global pandemic. Health agencies everywhere recommended that people refrain from touching their faces and clean their hands after touching public surfaces like door handles and handrails.

The first US case of COVID-19, the disease caused by SARS-CoV-2, was detected Jan. 20. According to market research firm Nielsen, hand sanitizer sales in the US grew 73% in the 4 weeks ending Feb. 22.

Answer 2

Explanation:

Signs have begun to spring up on storefront doors across the globe explaining that hand sanitizers are sold out. As a result, luxury brand owner LVMH, chemical giant BASF, and chemistry students at different universities across the globe are trying to produce fresh supplies.

But is the popularity of hand sanitizers justified? Although most health officials say that soap and water is the best way to keep your hands virus-free, when you’re not near a sink, the experts say, hand sanitizers are the next best thing. To get the maximum benefit from hand sanitizers, the Centers for Disease Control and Prevention (CDC) recommends that people use a product that contains at least 60% alcohol, cover all surfaces of their hands with the product, and rub them together until dry.

Even before scientists knew that germs existed, doctors made the link betweenhandwashing and health. American medical reformer Oliver Wendell Holmes and the Hungarian “Savior of Mothers,” Ignaz Philipp Semmelweis, both linked poor hand hygiene with increased rates of postpartum infections in the 1840s, almost 20 years before famed French biologist Louis Pasteur published his first germ theory findings. In 1966, while still a nursing student, Lupe Hernandez patented an alcohol-containing, gel-based hand sanitizer for hospitals. And in 1988, the firm Gojo introduced Purell, the first alcohol-containing