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yKpoI14uk [10]
2 years ago
15

Why krypton and noble gas are not used in airships using the periodic table?

Chemistry
1 answer:
WITCHER [35]2 years ago
3 0

Answer:

Since the noble gases are unreactive or inert, they are safe to use. Helium is used to fill balloons and airships, because it is much lighter that air and it will not catch fire. Neon is used in advertising signs. It will give red glow, but the color can be changes by mixing it with other gases.

Explanation:

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A(n) ______________ is an organism that lives on another organism and causes harm to that organism
RoseWind [281]

Answer: The answer is Parasite ma dude

Explanation:

In evolutionary ecology, parasitism is a symbiotic relationship between species, where one organism, the parasite, lives on or in another organism, the host, causing it some harm, and is adapted structurally to this way of life.

Hopes this helps

8 0
3 years ago
Read 2 more answers
Which of the following is an example of an environmental problem caused by chemicals
Neko [114]

Answer:

A

Explanation:

All of the other options are ways that could help the environment from the chemicals, but if they just continue to use the chemicals then it would hurt the environment

7 0
2 years ago
Data abd observation on the propeties of the given sample​
mr Goodwill [35]
Observation, in which the scientist observes what is happening, collects information, and studies facts relevant to the problem. In this stage, statistics suggests what can most advantageously be observed and how data might be collected.
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4 0
3 years ago
Scientific notation for 706000
Sedbober [7]
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3 0
2 years ago
What mass of iron is found in 280 g of 2 ppm solution?
Nataly_w [17]

<u>Answer:</u> The mass of iron found in the solution is 0.56 mg

<u>Explanation:</u>

ppm is the amount of solute (in milligrams) present in kilogram of a solvent. It is also known as parts-per million.

To calculate the ppm of oxygen in sea water, we use the equation:

\text{ppm}=\frac{\text{Mass of solute}}{\text{Mass of solution}}\times 10^6

Both the masses are in grams.

We are given:

Concentration of iron = 2 ppm

Mass of solution = 280 g

Putting values in above equation, we get:

2=\frac{\text{Mass of iron}}{280g}\times 10^6\\\\\text{Mass of iron}=\frac{2\times 280}{10^6}=0.00056g=0.56mg

<u>Conversion factor used:</u>  1 g = 1000 mg

Hence, the mass of iron found in the solution is 0.56 mg

6 0
3 years ago
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