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Radda [10]
4 years ago
7

At which temperature would an object radiate the least amount of electromagnetic energy?

Chemistry
1 answer:
dexar [7]4 years ago
8 0
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9. A student is dissolving sugar in water. What can
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Answer:

D

Explanation:

Sugar will dissolve faster when you stir the solution quickly because the act of stirring increases kinetic energy which increases the temperature.

4 0
3 years ago
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Can someone please help me with this I’ll mark brainliest, in the boxes below label what level of organization might look like?
ELEN [110]

Answer:

Vascular tissue transports water, minerals, and sugars to different parts of the plant. Vascular tissue is made of two specialized conducting tissues: xylem and phloem. Xylem tissue transports water and nutrients from the roots to different parts of the plant, and also plays a role in structural support in the stem.

Explanation:

HOPE THIS HELPS!

7 0
3 years ago
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
How many valence electrons does this atom have? (Urgent)
777dan777 [17]

Answer:

It only has 7 valence electrons because there are seven electrons in the highest orbital.

Explanation:

7 0
3 years ago
What is the minimum amount of 6.9 M H2SO4 necessary to produce 27.8 g of H2 (g) according to the following reaction? 2Al(s)+3H2S
Arte-miy333 [17]

Answer : The minimum amount of 6.9 M H_2SO_4 needed is, 2.0 L

Explanation :

The given chemical reaction is:

2Al(s)+3H_2SO_4(aq)\rightarrow Al_2(SO_4)_3(aq)+3H_2(g)

First we have to calculate the moles of H_2

\text{Moles of }H_2=\frac{\text{Mass of }H_2}{\text{Molar mass of }H_2}

Molar mass of H_2 = 2 g/mol

\text{Moles of }H_2=\frac{27.8g}{2g/mol}=13.9mol

Now we have to calculate the moles of H_2SO_4

From the balanced chemical reaction we conclude that,

As, 3 moles of H_2 produced from 3 moles of H_2SO_4

So, 13.9 moles of H_2 produced from 13.9 moles of H_2SO_4

Now we have to calculate the mass of H_2SO_4

\text{Concentration of }H_2SO_4=\frac{\text{Moles of }H_2SO_4}{\text{Volume of }H_2SO_4}

6.9M=\frac{13.9mol}{\text{Volume of }H_2SO_4}

\text{Volume of }H_2SO_4=2.0L

Thus, the minimum amount of 6.9 M H_2SO_4 needed is, 2.0 L

3 0
4 years ago
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