Answer: -
0.2 Kg
Explanation: -
The equation used by Rhia for the carbon footprint measurement is
C = 0.2 B + 0.1 S
where S miles are by subway, B miles by bus and C is Kg of carbon dioxide.
From the equation we see the coefficient of B is 0.2.
Thus 0.2 Kg of carbon dioxide per mile the bus portion contributes to Rhia's carbon footprint.
Answer:
Explanation:
As per the law of conservation of mass all the mass of carbon present in the hydrocarbon weighing 112 g is present in the 328.5 g of carbon dioxide produced when the hydrocarbon was burned in air.
<u>1) Calculate the mass of carbon in 328.5 g of carbon dioxide</u>:
- Chemical formula of carbon dioxide: CO₂
- Molar mass of CO₂: 12.011 g/mol + 2 × 15.999 g/mol = 44.009 g/mol
x / 328.5 g CO₂ = 12.011 g C / 44.009 g/mol ⇒ x = 86.65 g C
<u>2) Calculate the percent mass of carbon:</u>
- % = (mass of carbon / mass of carbon dioxide) × 100 =
= (89.65 / 112) × 100 = 80.04%
Round to three signifcant figures: 80.0%.
Answer:
Good examples are the reshaping of a coastline by a tsunami, deposition of mud by a flooding river, the devastation brought by a volcanic explosion, or a mass extinction caused by an asteroid impact.
Answer: R
Explanation: is polarized to the right
