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2 years ago

What causes damage to the ozone layer?

Chemistry

2 answers:

hoa [83]2 years ago

8 0

The right answer is chlorofluorocarbons (CFCs).

A good aerosol propellant must be odorless, colorless and non-flammable. CFCs, chlorofluorocarbons, have been used for many years. Unfortunately, they would have actively participated in the destruction of the ozone layer. Their use was banned in 1985 by the Montreal Protocol. Other often flammable substitutes (for example butane or propane) have been found.

ryzh [129]2 years ago

3 0

Chlorofluorocarbons (CFCs) can damage the ozone layer.

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- What is the concentration of hydrogen ions if the pH is 12?

ELEN [110]

Answer:

1 x 10^-12 mol dm^-3

Explanation:

[H+] = 10 ^ -pH

Therefore, pH 12 = 1 x 10^-12 hydrogen ion concentration

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2 years ago

Draw what a chromosome looks like during metaphase. identify the chromatids and the centromere

netineya [11]

This is what a chromosome looks like during mataphase

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2 years ago

Antarctica, almost completely covered in ice, has an area

Marysya12 [62]

Answer: The mass of ice is $2.39\times 10^{22}g$

Explanation:

We are given:

Area of Antarctica = $5,500,000mi^2=5,500,000\times 2.59\times 10^{10}=142.45\times 10^{15}cm^2$ (Conversion factor: $1mi^2=2.59\times 10^{10}cm^2$ )

Height of Antarctica with ice = 7500 ft.

Height of Antarctica without ice = 1500 ft.

Height of ice = 7500 - 1500 = 6000 ft = $182.88\times 10^3cm$ (Conversion factor: 1 ft = 30.48 cm)

To calculate mass of ice, we use the equation:

$\text{Density of a substance}=\frac{\text{Mass of a substance}}{\text{Volume of a substance}}$

We are given:

Density of ice = $0.917g/cm^3$

Volume of ice = Area × Height of ice = $142.45\times 10^{15}cm^2\times 182.88\times 10^3cm=26051.26\times 10^{18}cm^3$

Putting values in above equation, we get:

$0.917g/cm^3=\frac{\text{Mass of ice}}{26051.26\times 10^{18}cm^3}\\\\\text{Mass of ice}=(0.917g/cm^3\times 26051.26\times 10^{18}cm^3=2.39\times 10^{22}g$

Hence, the mass of ice is $2.39\times 10^{22}g$

5 0

2 years ago

Que impacto ambiental hay de los servicios de integrales de diseño y contracción

Nuetrik [128]

Answer:

IMPACTO AMBIENTAL EN LOS DISEÑOS Y CONSTRUCCIÓN

Explanation:

Los impactos directos por el uso de las vías terrestres pueden incluir: mayor demanda de combustibles para los motores; accidentes con los medios no motorizados de transporte o el reemplazo de los mismos; mayor contaminación del aire, ruido, desechos a los lados del camino; daños físicos o muerte a animales y personas ...

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2 years ago

Mercury has a density of 13.55 g/mL .What would be the volume of a 122 g sample?

Salsk061 [2.6K]

Answer:

V = 9.0037

Explanation:

V = M/D

V = 122/13.55

V = 9.0037

4 0

2 years ago