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IceJOKER [234]
3 years ago
10

Why are you able to smell things across a room or form great distances

Chemistry
1 answer:
Olin [163]3 years ago
7 0

Answer:

We smell hot food from distance because of the diffusion process. Diffusion is the spreading out and intermixing of particles From one substance into another substance due to the movement of particles.

Explanation:

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which of the following types of electromagnetic radiation is most dangerous? 1) Gamma Radiation 2) Ultraviolet Radiation
Y_Kistochka [10]
Gamma radiation is the most dangerous.
5 0
3 years ago
If the half life of a radioactive isotope is 1 day, then how much of the original isotope remains at the end of two days?
ikadub [295]

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25%

Explanation:

In a half life of a radioactive isotope is 1 day,it means it loses its half mass each day

We a formula for N half life

\sf  { \frac{1}{2} }^{n}

where n is the number of days

Here the isotope is kept for 2 days

so it's left over mass will be

\sf { (\frac{1}{2}) }^{2}  \\  \\  \\  \frac{1}{2}  \times  \frac{1}{2}  \\  \\  \sf  \frac{1}{4}

It's left over mass 1/4th of the original mass

Now, we need to find it's percentage by multiplying with 100

\sf  \frac{1}{4}  \times 100 \%\\  \\  \sf   \cancel\frac{100}{4} \% \\  \\  \sf 25\%

<u>So</u><u> </u><u>2</u><u>5</u><u>%</u><u> </u><u>mass</u><u> </u><u>will</u><u> </u><u>be</u><u> </u><u>left</u><u> </u><u>after</u><u> </u><u>2</u><u> </u><u>day</u><u> </u><u>of</u><u> </u><u>half</u><u> </u><u>life</u><u> </u><u>radioactive</u><u> </u><u>isotope</u><u>.</u><u> </u>

8 0
2 years ago
Read 2 more answers
QUE VENTAJAS TIENE PARA LA PLANTA Y EL CULTIVO LA PERMANENCIA DEL POTASIO COMO CATION MONOVALENTE (K+)?
yarga [219]

Explanation:

Son muchos los beneficios del catión monovalente (K+) en las plantas y cultivos, mencionaremos algunos:

-Interviene en el proceso de apertura y cierre de los estomas; el catión (k+) ayuda a que los estomas puedan realizar correctamente  el proceso de la fotosíntesis es decir  la absorción del dióxido de carbono para producir oxígeno y agua; este proceso ayuda a que la planta pueda fabricar su propio alimento es decir transformar materiales inorgánicos en orgánicos como azúcares y carbohidratos que son aprovechables por la planta para realizar diversas funciones catalíticas como la respiración celular,la fosforilación y la síntesis de proteínas; este proceso también contribuye a que la planta pueda almacenar y retener suficiente agua lo cual ayuda a evitar el estrés hídrico en la planta.

Por lo tanto si la planta tiene una buena concentración de potasio como catión monovalente(k+); es posible que tenga un buen crecimiento y desarrollo radicular ,así mismo la calidad de los cultivos será muy buena,seran cultivos muy nutritivos y saludables. Algunos cultivos que necesitan una alta cantidad de potasio son los cítricos y el banano.

6 0
3 years ago
What volume is occupied by 0.25 moles of nitrogen gas at 273 K and 1.50 atm.
Finger [1]

Answer:

3.74L

Explanation:

PV=nRT

V=nRT/P

= 0.25mol*0.0821LatmK^-1*273k/1.50atm

=3.74L

8 0
3 years ago
Explain the difference between the movement of water molecules at room temperature and at 0 'C.​
Helga [31]

Answer:

at room temperature: -water is in liquid state bcecause of which molecules are freely moving

at 0°C:- it is freezing pointof water in this state water molecule can't move due to which there is no collision and chemical reaction will not take place

Explanation:

if i m right than tag me brilliant

8 0
3 years ago
Read 2 more answers
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