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3 years ago

Will give brainliest, like, 5 stars and 5 points to best answer

1 answer:

6 0

evaporation systems allow for an endless source of water. you can grab cups of water straight from the sea or even a lake. the use of evaporation allows for you to drink water thats even healthier than getting it from a cloud and it will leave all of the bad parts that used to be in the water in the first container you pour into. this system is most useful in hot climates such as places near the equator.

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Hydrogen bromide decomposes when heated to 437C according to the equation: 2HBr(g) H2(g) Br2(g). If the reaction starts with 2.1

iren [92.7K]

Answer:

<h3>the equilibrium constant of the decomposition of hydrogen bromide is 0.084</h3>

Explanation:

Amount of HBr dissociated

$2.15 \ mole \times \frac{36.7}{100} \\\\=0.789 \ mole$

2HBr(g) ⇆ H2(g) + Br2(g)

Initial Changes 2.15 0 0 (mol)

- 0.789 + 0.395 + 0.395 (mol)

At equilibrium 1.361 0.395 0.395 (mole)

Concentration 1.361 / 1 0.395 / 1 0.395 / 1

at equilibrium (mole/L)

$K_c=\frac{[H_2][Br_2]}{[HBr]^2} \\\\=\frac{(0.395)(0.395)}{(1.361)^2} \\\\=\frac{0.156025}{1.852321} \\\\=0.084$

<h3>Therefore, the equilibrium constant of the decomposition of hydrogen bromide is 0.084</h3>

6 0

3 years ago

What is the percent by mass (mv) of a solution with 1.56 g of benzene dissolved in gasoline to make 998.44 mL of solution? (dens

Marina CMI [18]

Answer:

The percentage by mass of benzene in the solution is approximately 0.2%

Explanation:

The given parameters are;

The mass of the benzene solute dissolved in the gasoline solvent, m₁ = 1.56 g

The total volume of the benzene gasoline solution made, V = 998.44 mL

The density of gasoline, ρ = 0.7489 g/mL

Mass, m = Density, ρ × Volume, V

∴ The mass of gasoline in the 998.44 mL, solution = 0.7489 g/mL × 998.44 mL = 747.731716 g

The total mass of the solution = The mass of the benzene in the solution + The mass of the gasoline in the solution

∴ The total mass of the solution = 747.731716 g + 1.5 g = 749.231716 g

$The \ percentage \ by \ mass = \dfrac{The \ mass \ of \ a \ fraction}{(The \ mass \ of \ the \ total \ solution)} \times 100$

The percentage by mass of benzene in the solution = (1.5 g/749.231716 g)×100 ≈ 0.2% by mass.

6 0

3 years ago

This is due at 4:00 P.M. and I do not want to make a 76%, so please help MEEEEEEEEEEEEE!!!

Ann [662]

Answer:

Hi, There!...

<h2>Answer</h2>

My Answer would be Option B.

Explanation:

nuclear energy protects air quality by producing massive amounts of carbon-free electricity.

Thermal energy from nuclear reactors may also be used to decarbonize other energy-intensive sectors such as transportation – the largest contributor to carbon pollution.

8 0

3 years ago

Read 2 more answers

How many grams of aluminum are required to give a total dislocation length of 3,000 miles (enough to stretch from New York City

Luba_88 [7]

Answer:

0.13 g

Explanation:

mass of aluminum required = ( Dislocation length) / ( Dislocation density) × (density of metal)

3000 miles to cm ( 1 mile = 160934 cm) = 3000 miles × 160934 cm / 1 mile = 482802000 cm

density of Aluminium = 2.7 g /cm³

dislocation density of aluminum = 10¹⁰ cm³

mass of aluminum required = (482802000 cm × 2.7 g/cm³) / 10¹⁰ cm³ = 0.13 g

5 0

3 years ago

1. Which of the following does NOT indicate that a chemical change may have taken place?

mojhsa [17]

A fracture Formation .
A matter is neither destroyed or created

8 0

3 years ago