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3 years ago

How can people reduce respiratory Diseases & Accidents?

1 answer:

6 0

Respiratory diseases can be prevented. Avoiding exposure to tobacco smoke, home and workplace air pollutants, and respiratory infections can prevent the development of COPD. Smoking is the most common cause of chronic respiratory diseases like COPD. Smoking cessation is the most important part of treatment for smokers diagnosed with chronic respiratory disease. Indoor and outdoor air pollutants cam also cause respiratory problems. Air pollution can irritate, inflame, or destroy lung tissue. Washing hands regularly with soap and water can prevent respiratory infections. It is estimated that hands spread 80 percent of common infectious respiratory diseases like colds and flu. Early detection of respiratory diseases might change disease course and progress. A simple test, called spirometry can be used to measure pulmonary—or lung—function and detect COPD in anyone with breathing problems.

Hope this helps!

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5. Geologists think that the inner and outer cores of Earth consist of<br> iron and nickel.

wolverine [178]

Answer:

is this true/false? if so its true.

Explanation:

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3 years ago

What are two types of cold air masses that influence the weather in North America? Name them and describe their humidity.

I am Lyosha [343]

Tropical or warm air masses form in the tropics and have low air pressure.

polar or cold air masses form north of 50 degrees north latitude and south of 50 degrees south latitude

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3 years ago

A substance with a mass of 50.0 g has a temperature change of 40.0

grigory [225]

Answer:

Mass=50.0g

H=670J

change in temperature=40

using. c=h÷m×change in temperature

c=670÷50×40

C=670÷2000

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7 0

2 years ago

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A gas used to extinguish fires is composed of 75 % CO2 and 25 % N2. It is stored in a 5 m3 tank at 300 kPa and 25 °C. What is th

tatyana61 [14]

Answer : The partial pressure of the $CO_2$ in the tank in psia is, 32.6 psia.

Explanation :

As we are given 75 % $CO_2$ and 25 % $N_2$ in terms of volume.

First we have to calculate the moles of $CO_2$ and $N_2$ .

$\text{Moles of }CO_2=\frac{\text{Volume of }CO_2}{\text{Volume at STP}}=\frac{75}{22.4}=3.35mole$

$\text{Moles of }N_2=\frac{\text{Volume of }N_2}{\text{Volume at STP}}=\frac{25}{22.4}=1.12mole$

Now we have to calculate the mole fraction of $CO_2$ .

$\text{Mole fraction of }CO_2=\frac{\text{Moles of }CO_2}{\text{Moles of }CO_2+\text{Moles of }N_2}$

$\text{Mole fraction of }CO_2=\frac{3.35}{3.35+1.12}=0.75$

Now we have to calculate the partial pressure of the $CO_2$ gas.

$\text{Partial pressure of }CO_2=\text{Mole fraction of }CO_2\times \text{Total pressure of gas}$

$\text{Partial pressure of }CO_2=0.75mole\times 300Kpa=225Kpa=225Kpa\times \frac{0.145\text{ psia}}{1Kpa}=32.625\text{ psia}$

conversion used : (1 Kpa = 0.145 psia)

Therefore, the partial pressure of the $CO_2$ in the tank in psia is, 32.6 psia.

3 0

3 years ago

How do models help scientists predict the polarity of molecules?

yuradex [85]

Answer:There are three main properties of chemical bonds that must be considered—namely, their strength, length, and polarity. The polarity of a bond is the distribution of electrical charge over the atoms joined by the bond. Specifically, it is found that, while bonds between identical atoms (as in H2) are electrically uniform in the sense that both hydrogen atoms are electrically neutral, bonds between atoms of different elements are electrically inequivalent. In hydrogen chloride, for example, the hydrogen atom is slightly positively charged whereas the chlorine atom is slightly negatively charged. The slight electrical charges on dissimilar atoms are called partial charges, and the presence of partial charges signifies the occurrence of a polar bond.

Explanation:

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3 years ago

Read 2 more answers