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3 years ago

13

Some weather conditions are shown.

1 answer:

xxMikexx [17]3 years ago

5 0

Answer:

Tornado

Explanation:

This is because, tornados are heavy constant winds that are blowing around all over causing an unstable atmosphere. Sometimes the weather will change drastically like causing hail, and cold fronts moving in. This is exactly what matches the conditions you show! :)

Hope this helps! Please mark as brainliest!

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en un recipiente se tiene 800 g de una solución al 35% en masa de ácido sulfuroso, de la cual se evapora 80ml de agua. ¿cuál es

Alinara [238K]

The mass percent of sulfurous acid in the new solution : 38.9%

<h3>Further explanation</h3>

<em>In a container you have 800 g of a 35% by mass solution of sulfurous acid, from which 80 ml of water evaporates. What is the mass percent of sulfurous acid in the new solution? data: density of water is 1g / ml.</em>

<em />

solution 1

composition :

35% acid :

$\tt 0.35\times 800~g=280~g$

water :

$\tt 800-280=520~g$

solution 2(new solution)

composition :

water

$\tt 520-(80~ml\times 1~g/ml)=440~g$

Total mass of new solution after water evaporated

$\tt 280(acid)+440(water)=720~g$

%mass of acid in a new solution

$\tt \dfrac{280}{720}\times 100\%=38.9\%$

5 0

3 years ago

Farmer brown is planting crops in his feild s. He wants to prevent the topsoil from being blown away by the wind or washed away

Ratling [72]

Hey!

I would say the answer is A. Plow the soil many times to lessen the chance of the topsoil being blown away.

Hope this helps !

4 0

3 years ago

Read 2 more answers

Tap water is a mixture. TRUE or FALSE.

Temka [501]

True, H2O is a compound with 2 hydrogens and one oxygen

7 0

3 years ago

Determine the number of atoms in 5.88 moles sodium.

ozzi

1 mole ------------ 6.02x10²³ atoms
5.88 moles ---- ?

atoms = 5.88 * 6.02x10²³ / 1

= 3.539x10²⁴ atoms

hope this helps!

4 0

3 years ago

In the laboratory, a general chemistry student measured the pH of a 0.529 M aqueous solution of phenol (a weak acid), C6H5OH to

Artyom0805 [142]

Answer:

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .

Explanation:

The measured pH of the solution = 5.153

$C_6H_5OH\rightarrow C_6H_5O^-+H^+$

Initially c

At eq'm c-x x x

The expression of dissociation constant is given as:

$K_a=\frac{[C_6H_5O^-][H^+]}{[C_6H_5OOH]}$

Concentration of phenoxide ions and hydrogen ions are equal to x.

$pH=-\log[x]$

$5.153=-\log[x]$

$x=7.03\times 10^{-6} M$

$K_a=\frac{x\times x}{(c-x)}=\frac{x^2}{(c-x)}=\frac{(7.03\times 10^{-6} M)^2}{ 0.529 M-7.03\times 10^{-6} M}$

$K_a=9.34\times 10^{-11}$

The dissociation constant of phenol from given information is $9.34\times 10^{-11}$ .

4 0

4 years ago