All categories

3 years ago

Help hurry I’ll give you brainlyist

Chemistry

1 answer:

Kazeer [188]3 years ago

4 0

Acid rain is formed by chemicals let off into the atmosphere further introducing the nitrogen oxides which are attached to the water vapour and than mixed together further making acid rain which contains a pH scale of 6 a pale light acid though very much effective.

Please refer back if needed further assistance.

Hope this helps and enlightens your day. Enjoy...

You might be interested in

According to Bohr atomic model

nata0808 [166]

Answer:

A small positively charged nucleus surrounded by revolving negatively charged electrons in fixed orbits

7 0

3 years ago

Briefly discuss interpretations of your observations and results. Discuss how your observations illustrated LeChatelier's princi

Dvinal [7]

Answer:

Le Chatelier's principle can be applied in explaining the results

Explanation:

According to Le Chatelier's principle, when a constraint such as a change in concentration in this case is imposed on a chemical system in equilibrium, the system will adjust itself in such a way as to annul the constraint imposed.

Hence, when the color of the solution was more like that of the control, the reaction would shift towards the left. Similarly, when the color was more like it was towards the reactant, the reaction would shift towards the right.

If we were to prepare calcium oxalate, we should prepare it in a base solution. This is because when the base was added to calcium oxalate, it did not form any precipitate but when an acid was added to the calcium oxalate, it formed a precipitate.

4 0

3 years ago

Calculate the fraction of atoms in a sample of argon gas at 400 K that have an energy of 12.5 kJ or greater. Report your answer

emmainna [20.7K]

Answer:

0.023

Explanation:

The Arrhenius' equation states that:

$k = A*e^{\frac{-Ea}{RT}$

Where k is the velocity constant of the reaction, A is the constant of the collisions, Ea is the activation energy (the energy necessary to the molecules have so the reaction will happen), R is the gas constant (8.314 J/molK) and T is the temperature.

This equation is derivated of:

k = pZf

Where

p=fraction of collisions that occur with reactant molecules properly oriented

f=fraction of collisions having energy greater than the activation energy

Z=frequency of collisions

Thus, p*Z = A, and

f = $e^{\frac{-Ea}{RT} }$

So, if the energy of the molecules is 12.5 kJ/mol = 12500 J/mol, thus the fraction will be:

f = $e^{\frac{-12500}{8.314*400} }$

f = 0.023

6 0

3 years ago

If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, what temperature is the gas?

iogann1982 [59]

If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, 22.53K is the temperature in the gas.

<h3>What is an ideal gas equation?</h3>

The ideal gas law (PV = nRT) relates the macroscopic properties of ideal gases. An ideal gas is a gas in which the particles (a) do not attract or repel one another and (b) take up no space (have no volume).

First, calculate the moles of the gas using the gas law,

PV=nRT, where n is the moles and R is the gas constant. Then divide the given mass by the number of moles to get molar mass.

Given data:

P= 5.2 atm

V= 500 mL =0.5 L

n=?

R= $0.082057338 \;L \;atm \;K^{-1}mol^{-1}$

T=?

$Moles = \frac{mass}{molar \;mass}$

$Moles = \frac{45 g}{32}$

Moles = 1.40625

Putting value in the given equation:

$\frac{PV}{RT}=n$

$1.40625= \frac{5.2 \;atm\; X \;0.5 \;L}{0.082057338 \;L \;atm \;K^{-1}mol^{-1} X T}$

T= 22.53167034 K= 22.53K

Hence, If 45 g of O2 gas in a 500 mL container is exerting a pressure of 5.2 atm, 22.53K is the temperature in the gas.

Learn more about the ideal gas here:

brainly.com/question/27691721

#SPJ1

7 0

2 years ago

How many miles of iron can be produced from 3.5 moles of Fe2O3 and 6.2 moles of CO

AlekseyPX

Answer:

4.13 moles of Fe.

Explanation:

Given data:

Moles of iron produced = ?

Moles of Fe₂O₃ = 3.5 mol

Moles of CO = 6.2 mol

Solution:

Chemical equation:

Fe₂O₃ + 3CO → 2Fe + 3CO₂

Now we will compare the moles of iron with CO and Fe₂O₃.

Fe₂O₃ : Fe

1 : 2

3.5 : 2/1×3.5 = 7 mol

CO : Fe

3 : 2

6.2 : 2/3×6.2 = 4.13 mol

The number of moles of iron produced by CO are less it will limiting reactant.

Thus, moles of iron formed in given reaction are 4.13 moles.

6 0

3 years ago