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Anastasy [175]
4 years ago
7

Why are viruses (specifically) so dangerous?

Chemistry
1 answer:
Y_Kistochka [10]4 years ago
4 0

Answer:

Over 700,000 lives are taken by the AIDs virus every year. Hepatitis C claims the lives of over 200,000 people each year and haemorrhagic fevers caused by viruses such as Ebola have resulted in over 20,000 deaths.

Explanation:

You might be interested in
Diseases are classified into _______ and _____ based on their duration.
adelina 88 [10]

Answer:

communicable and non-communicable?

7 0
4 years ago
568 cm3 of chlorine at 25° C will occupy what volume at -25° C while the pressure remains constant?
Vsevolod [243]

Answer:

474.3 cm³

Explanation:

Given data:

Initial volume of chlorine gas = 568 cm³

Initial temperature = 25°C

Final volume = ?

Final temperature =  -25°C

Solution:

Initial temperature = 25°C (25+273 = 297 K)

Final temperature =  -25°C (-25 +273 = 248 K)

The given problem will be solve through the Charles Law.

According to this law, The volume of given amount of a gas is directly proportional to its temperature at constant number of moles and pressure.

Mathematical expression:

V₁/T₁ = V₂/T₂

V₁ = Initial volume

T₁ = Initial temperature

V₂ = Final volume  

T₂ = Final temperature

Now we will put the values in formula.

V₁/T₁ = V₂/T₂

V₂ = V₁T₂/T₁  

V₂ = 568 cm³ × 248 K /297 K

V₂ = 140864 cm³.K / 297 K

V₂ = 474.3 cm³

6 0
4 years ago
A 1.2 L weather balloon on the ground has a temperature of 25°C and is at atmospheric pressure (1.0 atm). When it rises to an el
natita [175]

Answer: 44.37 degrees C

Explanation:

Use combined gas law: (P1)(V1)/T1=(P2)(V2)/T2

For most gas laws, you  must convert to Kelvin:

K=deg C+273

K=25+273=298 K

Plug and chug:

(1.0 atm)(1.2 L)/(298 K)=(0.71 atm)(1.8 L)/(x)

Solve for x and get 317.37 K

Subtract 273 from this to convert to degrees Celsius. You will get 44.37 degrees Celsius.

If you want additional help in chemistry or another subject for FREE, check out growthinyouth.org

8 0
3 years ago
A sample of water with a mass of 27.56g and an unknown temperature loses 2443 Joules. If the final temperature is found to be 62
mixer [17]

Answer:

41.3 °C

Explanation:

From the question given above, the following data were obtained:

Mass (M) of water = 27.56 g

Heat (Q) loss = 2443 J

Final temperature (T2) = 62.5 °C

Initial temperature (T1) =?

NOTE: The specific heat capacity (C) of water is 4.18 J/g°C

Thus, we can obtain the initial temperature of the water by using the following formula:

Q = MC(T2 – T1)

2443 = 27.56 × 4.18 (62.5 – T1)

2443 = 115.2008 (62.5 – T1)

Divide both side by 115.2008

2443 / 115.2008 = (62.5 – T1)

21.20645 = 62.5 – T1

Collect like terms

21.20645 – 62.5 = – T1

– 41.3 = – T1

Divide both side by – 1

– 41.3 /– 1= – T1 / –1

41.3 = T1

T1 = 41.3 °C

Thus, the initial temperature of the water was 41.3 °C

8 0
3 years ago
A(n)<br> ______ Is a group of organs that work together to perform a com
soldier1979 [14.2K]

Answer:

an organ system  Is a group of organs that work together to perform a com

Explanation:

that is the answer organ system

now plz give me 5 stars and press on the heart plz

5 0
3 years ago
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