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Dominik [7]
4 years ago
7

1. The most important agent of chemical weathering is

Chemistry
1 answer:
Luden [163]4 years ago
4 0

Answer:

sulfur

Explanation:

without sulfur you can not grow any food

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How much faster does ethane (C2H6) gas travel compared to chlorine gas?
zimovet [89]

Answer:

\large \boxed{\text{54 $\, \%$ faster }}

Explanation:

v_{\text{rms}} \propto \sqrt{\dfrac{3RT}{M}

if temperature is constant.  

v_{\text{rms}} \propto \sqrt{\dfrac{1}{M}

if we are comparing two gases,

\dfrac{v_{2}}{v_{1}} = \sqrt{\dfrac{M_{1}}{M_{2}}}

Let chlorine be Gas 1 and ethane be Gas 2

Data:

M₁ =  70.91 g/mol

M₂ = 30.07 g/mol

Calculation

\begin{array}{rcl}\dfrac{v_{2}}{v_{1}} & = & \sqrt{\dfrac{M_{1}}{M_{2}}}\\\\& = & \sqrt{\dfrac{70.91}{30.07}}\\\\& = & \sqrt{2.358}\\\\& = & \mathbf{1.54}\\\end{array}\\\text{Ethane molecules travel at 1.54 times the speed of chlorine molecules}\\\text{or $\large \boxed{\textbf{54 $\%$ faster }}$ than chlorine molecules}

5 0
3 years ago
1. 90.0 mL of distilled water is added to a 10.0mL sample of 0.150mol/L sodium
aniked [119]

Answer: dilute

Explanation:

A concentrated solution which is used to prepare solutions of lower concentrations by diluting it with addition of water.

A dilute solution is one which contains lower concentration.

Using Molarity equation:

M_1 =concentration of stock solution = 0.150 mol/L

V_1 = volume of stock solution = 10.0 ml

M_2 = concentration of dilute solution = ?

V_2 = volume of dilute solution = (10.0+90.0) ml = 100.0 ml

0.150\times 10.0=M_2\times 100.0

M_2=0.015mol/L

As the concentration is less than the original concentration, the solution is termed as dilute.

7 0
3 years ago
Which statement best describes a chemical property of a mineral
alina1380 [7]

Answer:

The mineral forms gas bubbles when a sample is stored in water

6 0
3 years ago
How does large change in temperature or pH affect proteins?
Law Incorporation [45]

Answer:

(c) They come apart or lose their shape

Explanation:

Heat and temperature disrupt the attractions of the groups in the side chains that give the protein its characteristic shape.

(a) and (b) are wrong. The proteins do not lose their amino acids or their sequence.

(d) is wrong. The amino acids do not change into fatty acids.

5 0
4 years ago
In the course of developing his model, Bohr arrived at the following formula for the radius of the electron’s orbit: rₙ = n²h²€₀
laiz [17]

THE RADIUS OF THE TENTH ORBIT IN A HYDROGEN ATOM IS 52.9A°

<h3>How does an electron orbit work? </h3>

The three-dimensional area covering the nucleus of an atom is called electron orbital. Electrons sometimes fill low-energy orbitals which are closer to the nucleus before filling the higher ones. They mostly fill the orbitals as singly as they can and that filling is known as Hund’s rule. In the wave-like property, electrons don’t orbit a nucleus in the way a planet orbits the sun but however, but they exist as standing waves. The lowest energy possible an electron can take is the same as the fundamental frequency of a wave on a string. 

the radius of the first orbit =0.0529nm 

 radius ∝ n²/z

​radius of 10th orbit =(0.0529×100)nm=52.9A°

To learn more about Electron orbit,visit:

brainly.com/question/19132667

#SPJ4

4 0
1 year ago
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