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kati45 [8]
3 years ago
6

Which discovery is considered to have led to the greatest advancements in the field of medicine?

Chemistry
1 answer:
Darya [45]3 years ago
4 0
I think it would be penicillin as it saved many lives in its time and ours.
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Alum is a compound used in a variety of applications including cosmetics, water purification, and as a food additive. It can be
mylen [45]

yield = 52.23 %

Explanation:

We have the following chemical reaction:

2 Al (s) + 2 KOH (aq) + 4 H₂SO₄ (aq) + 10 H₂O → 2 KAl(SO₄)₂·12 (H₂O) (s) + 3 H₂ (g)

mass of aluminium = mass of bottle with aluminium pieces - bottle mass

mass of aluminium = 10.8955 - 9.8981 = 0.9974 g

mass of alum = mass of bottle with final product - bottle mass

mass of alum = 19.0414 - 9.8981 = 9.1433 g

number of moles = mass / molecular weight

number of moles of aluminium = 0.9974 / 27 = 0.03694 moles

number of moles of alum (practical) = 9.1433 / 474 = 0.01929 moles

To calculate the theoretical quantity of alum that should be obtained from 0.03694 moles of aluminium we devise the following reasoning:

if       2 moles of aluminium produce 2 moles of alum

then 0.03694 moles of aluminium produce X moles of alum

X = (0.03694 × 2) / 2 = 0.03694 moles of alum (theoretical)

yield = (practical quantity / theoretical quantity) × 100

yield = (0.01929 /  0.03694) × 100

yield = 52.23 %

Learn more about:

reaction yield

brainly.com/question/7786567

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5 0
3 years ago
What are prevailing winds?
Tems11 [23]

Answer:

D) winds that blow in the same direction at a consistent speed

Explanation:

i took the quiz got it right so i know the answer please trust me i know this is right i promise with all my heart

7 0
3 years ago
An atom is the most __________ unit of living and nonliving things. (Help I will mark brainliest if ya help, and the first one t
ziro4ka [17]

The correct answer to your question is

Basic. it is the is the basic unit of non living things.

Hope this helps!

6 0
2 years ago
Read 2 more answers
why did mendeleev leave blank spaces on his periodic table? did later discoveries justify his predictions?
schepotkina [342]

Answer:

mendeleev left a space

Explanation:

so the periodic table can be organize

7 0
2 years ago
*What type of circuit is this in the picture?
galben [10]

Answer:

B: parallel

Explanation:

because a parallel circuit has two or more paths for current to flow through. Voltage is the same across each component of the parallel circuit. The sum of the currents through each path is equal to the total current that flows from the source.

8 0
2 years ago
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