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Crank
3 years ago
8

Air that has been removed from a bell jar will NOT allow _____________ waves to travel through the jar. Question 4 options: soun

d light water
Chemistry
1 answer:
White raven [17]3 years ago
3 0

Answer:

Sound.

Explanation:

Sound requires a medium such as air to travel.

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A particular sample of air is 2.5% water vapor express the concentration of water vapor in parts per million
Inessa05 [86]

Answer:

                     25000 ppm

Explanation:

<em>Parts Per Million </em>is defined as the number of parts of a solute per one million parts of a solution.

                  ppm  =  (Weight of Solute / Weight of Solution) × 10⁶   ---(1)

Let us suppose that the air (solution) weights 100 grams, then 2.5 % of water vapors will have following mass,

Mass of Vapors g / 100 g × 100  =  2.5

Or,

Mass of Vapors = 2.5 × 100 / 100

Mass of Vapors  =  2.5 g

Hence, mass of water vapors is 2.5 g.

Now, putting mass of water vapors and air in eq. 1,

                  ppm  =  (2.5 / 100) × 10⁶

                 ppm  =  25000

7 0
3 years ago
Calculate the grams of so2 gas present at stp in a 5. 9 l container. (atomic weights: s=32, o=16).
Solnce55 [7]

The 5.9 L container at STP contains 16.83 g of SO2.

To begin, we must determine how many moles of SO2 are contained in the 5.9 L container.

At standard temperature and pressure (STP), one mole of SO2 equates to 22.4 liters.

5.9 L = 5.9 / 22.45.9 L = 0.26 moles of SO2 as a result.

The result is that 0.263 moles of SO2 are present in the container.

Following that, we shall determine the mass of 0.263 moles of SO2.

The following are ways to do this:

The mass of SO2 is 32 + (16 2) = 32 + 32= 64 g/mol,

where SO2 Mole = 0.263 Molar.

Molar + Molar Mass Equals Mass

SO2 mass is 16.83 g, or 0.263 of a kilogram.

Therefore, 16.83 g of SO2 are present in the 5.9 L container at STP.

to know more about mass, visit to:-

brainly.com/question/15959704

#SPJ4

8 0
1 year ago
17 POINTS (SERIOUS ANSWER ASAPP)
katovenus [111]
I think the answer is C. Hope this helped. 
6 0
3 years ago
What is the difference between acute and chronic radiation poisoning
tatiyna
Acute radiation can be healed by developing cells (white blood cells) in the body. During Chronic radiation immense amount of energy is released into your body causing division and break down of cells which can cause cancer and internal bleeding and cannot be cured depending on the amount released.
6 0
3 years ago
A rectangle solid of unknown density is 5 m long two meters high and 4 meters wide. The mass of this solid is 300 grams. Find th
aksik [14]
D= M/V so, D=300/40 wich is 7.5 so D= 7.5g/m3
6 0
3 years ago
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