Question

please answer ALL. will give rating for best answers

Question 28 This heavy metal may be used in manufacturing a hospital doorknob or bedrail copper silver Iron O gold Question 29 2 pts Refer to figure 4 below. If your chicken started with 1000 live Salmonella cells, how long would you need to cook it at 65oC to reduce the number to 12 8 Figure 4 Figure Salmonelle enteritidis survival at 65°C. Numbers on the X axis represent minutes. 25 minutes 10 minutes 20 minutes 15 minutes Question 30 2 pts Beware: treating drinking water with chlorine might not inactivate these: O O enveloped viruses Gram-positive bacteria O protocoalcysts Gram-negative bacteria

Answer 1

The hospital doorknobs and bedrails are ande up of brass. Brass is an allow of copper and since. Brass is used for its self sanitization property. Brass can disinfect itself in about eight hours. So copper is the heavy metal to be used in these items.

The answer is A.