The gas composition of the emissions of a factory is measured and listed in the table below. Assuming that the overall flowrate of the gas stream is 50000 kg per year, calculate the total GHG-20 emissions of the plant in tonne CO_2,eq per year.

The global warming potential of different gases is shown in the following table.

What is the GHG emissions for Hyundai Kona EV (electric vehicle, 164 Wh/km) when the Alberta electricity is used? You can ignore the GHG emissions related to battery manufacturing.

How about Quebec (21.2 g CO2/kWh)?

Hyundai NEXO is a hydrogen fuel cell vehicle with a fuel consumption of 0.84 kg H2 per 100 km. Assuming that the average annual mileage in Canada is 15000 km, and hydrogen is produced by a using electrolysis (55 kWh/kg H2), what are the net GHG emissions of this vehicle in one year (kg CO2 per year)?

Assume that electricity from Alberta (683.5 g CO2/kWh) is used in the electrolysis process.

It is equivalent to how much (tonne) of coal combustion? (Use the following link to define the energy content of coal).

Heat Values of Various Fuels (Use Hard black coal (Australia & Canada)):

https://www.world-nuclear.org/information-library/facts-and-figures/heat-values-of-various-fuels.aspx

Note: In 2021 Canada used 19 million tonnes of coal for electricity generation!

How much energy is released when there is 1 kg of mass defect (MJ)? 

High-density Polyethylene (HDPE) is provided as an alternative material to lessen the product's environmental impact. Assuming the density of HDPE is 950 kg/m3, and according to the findings of the lifecycle assessment, the lifecycle land use of HDPE manufacturing is 0.01 hectare per tonne of HDPE.

What is the comparable land use for this order using plastic boards (ha)?

Which has less environmental effect in terms of land use?

Wood vs Plastic chopping board: Land use A restaurant orders 50 wooden cutting boards (made of oak) measuring 0.5 m × 0.5 m * 0.1 m. 1. How much is the equivalent land use of this order (ha)? During wood processing, around 50% of the wood is lost. Furthermore, the area required for oak production is 0.2 hectares per m3 of collected wood.

20 grams of Radon (222) is released to a room. After 1 week, how much is the mass of the remaining gas?