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2 years ago

What is a cold air mass ?

1 answer:

5 0

Colder air masses are temped Polar or Arctic. While warmer air masses are termed Tropical. Continental and Superior air masses are dry while maritime monsoon air masses are moist. Weather fronts separate air ,asses with different density (Temperature and/or Moisture) characteristics.

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A spheroidal bacterium with a diameter of 1 mm contains 2 molecules of a particular protein. What is the molar concentration?

creativ13 [48]

Answer : The molar concentration is, $6.35\times 10^{-18}mol/L$

Explanation :

First we have to calculate the moles of protein.

$\text{Moles of protein}=\frac{\text{Number of molecules of protein}}{\text{Avogadro's number}}$

Number of molecules of protein = 2 molecules

Avogadro's number = $6.022\times 10^{23}molecules/mol$

$\text{Moles of protein}=\frac{2\text{ molecules}}{6.022\times 10^{23}molecules/mol}=3.32\times 10^{-24}mol$

Now we have to calculate the radius.

Radius = $\frac{Diameter}{2}=\frac{1mm}{2}=0.5mm=5.0\times 10^{-4}m$

Conversion used : (1 mm = 0.001 m)

Now we have to calculate the volume.

$V=\frac{4}{3}\pi r^3$

$V=\frac{4}{3}\times 3.14\times (5.0\times 10^{-4}m)^3$

$V=5.23\times 10^{-10}m^3=5.23\times 10^{-7}L$

Conversion used : (1 m³ = 1000 L)

Now we have to calculate the molar concentration.

$Concentration=\frac{\text{Moles of protein}}{\text{Volume}}$

$Concentration=\frac{3.32\times 10^{-24}mol}{5.23\times 10^{-7}L}$

$Concentration=6.35\times 10^{-18}mol/L$

Thus, the molar concentration is, $6.35\times 10^{-18}mol/L$

4 0

2 years ago

Why do sharks like the scent of blood?

zaharov [31]

<span>Its just what their diet is made of, meat, mainly other fish. So if there is blood around, there is probably food around.

Same thing with your favorite food.

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8 0

3 years ago

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Suppose that Louisa is cut by broken glass during a lab accident. Which is the proper place to dispose of the paper towels that

Ivanshal [37]

It would be the Hazardous waste container. if you put it in the class room container, others could get sick from it.

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2 years ago

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PLEASE HELP. ITS FOR MY SIS. PLEASE NUMBER EACH ANSWER FOR NO CONFUSION.

Oksi-84 [34.3K]

Answer:

1. It provides not a lot of energy due to its lack of protein

2. Macronutrients are big picture nutrition categories, such as carbohydrates, fats, and proteins. Micronutrients are smaller nutritional categories, such as individual vitamins and minerals like calcium, zinc, and vitamin B-6.

3. Fibers keep your digestive system clean and healthy, easing bowel movements, and flushing cholesterol and harmful carcinogens out of the body.

4. It is considered a nutrient because it plays a vital role in keeping alive

Explanation:

I just answered the questions honestly

I am sorry if it is not what your looking for

3 0

2 years ago

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8. Your mother is sure that you were driving too fast because she knows (2 points)

Zigmanuir [339]

Answer:

Explanation:

She would have compared how long it would take you to get where you're going, and compare it to how long it took you to get back.

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2 years ago

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