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gladu [14]
3 years ago
14

When do we classify a disease as epidemic

Chemistry
2 answers:
belka [17]3 years ago
7 0

Answer:

A disease is classifies as an epidemic when there is a sudden increase in cases or in their matter of spread.

Explanation:

djyliett [7]3 years ago
3 0

Explanation:

An epidemic (from Greek ἐπί epi "upon or above" and δῆμος demos "people") is the rapid spread of disease to a large number of people in a given population within a short period of time.

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Which set of changes does not involve breaking or forming chemilcal bonds
sineoko [7]
<h2><u>Answer:</u></h2>

It wasn't an adjustment in the condition of issue on the grounds that the vitality in the can did not change. Additionally, since this was a physical change, the atoms in the can are as yet similar particles. No synthetic bonds were made or broken.  You added enough vitality to make a stage change from strong to fluid.  

The main changes recorded which don't include framing or breaking substance bonds would bubble and liquefying. Bubbling and liquefying are physical changes as opposed to synthetic changes, so no new items are shaped.

6 0
3 years ago
Consider the following elementary reaction:
Marat540 [252]

Answer:

[NO]=\frac{k_{-1}}{k_1} [N_2O_2]

Explanation:

Hello!

In this case, since the reaction may be assumed in chemical equilibrium, we can write up the rate law as shown below:

r=-k_1[NO]+k_{-1}[N_2O_2]

However, since the rate of reaction at equilibrium is zero, due to the fact that the concentrations remains the same, we can write:

0=-k_1[NO]+k_{-1}[N_2O_2]

Which can be also written as:

k_1[NO]=k_{-1}[N_2O_2]

Then, we solve for the concentration of NO to obtain:

[NO]=\frac{k_{-1}}{k_1} [N_2O_2]

Best regards!

8 0
3 years ago
An atom can absorb any amount of energy to become excited. True False
lora16 [44]
The correct answer would be false

Hope this helped! ☺
6 0
3 years ago
What is conserved in physical changes
nataly862011 [7]

Answer:

energy or density

Explanation:

8 0
4 years ago
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Steel that is exposed to water and salt rusts quickly. If you were a ship builder, how would you protect your new ship? Explain.
timurjin [86]

Answer:

Painting with an oil based paint

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