What is meant by e-fuel? E-fuel is a synthetic version of fossil fuel. Brilliant chemists have broken down the chains of elements that make up coal and gas, chiefly hydrogen and carbon. Using organic carbon-heavy matter and burning it to make power isn’t sustainable because eventually, al...
In our daily life, it is not very practical to measure the quantity of a fuel in mole. We normally measure the quantity of a fuel by its mass. The calorific value or fuel value of a fuel is the amount of heat energy given out when one gram of the fuel is completely burnt in exces...
(a)Natural gas, which is mainly methane, is a fossil fuel.(i) What is meant by the term fuel?[1](ii) Name two other fossil fuels.[2](iii) Name a solid fuel which is not a fossil fuel.[1] 相关知识点: 试题来源: 解析 (a)(i) substance/ material/ compound/element/mixture (...
Step-by-Step Solution:1. Definition of Renewable Sources of Energy: - Renewable sources of energy are those sources from which energy can be obtained continuously over a long period of time. This means that
(a)(i) Use the unit MJ kg-1 to deduce what is meant by energy density... [1 1](ii) Determine the rate of consumption of natural gas in the power stations.rate...kg s-1 [2](b) The radiant power of the Sun is 3.90 x 1026 W. The average radius of the Earth's orbit...
The glycemic index for white flour is very high – meaning it spikes your insulin levels without providing nutritional fuel. Carbohydrates are converted to sugars by your body, so excessive products that contain white flour can lead to increased insulin resistance. Simple sugars (like refined ...
3 (a) Different gases diffuse at different speeds.(i) What is meant by the term diffusion?[1(ii) What property of a gas molecule affects the speed at which it diffuses?[1(b)Helium is a gas used to fill balloons. It is present in the air in very small quantities. Diffusion can b...
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5 What is meant by "a strong support network"? 3 Discuss the following questions in groups. 1 Which would you prefer: living in a big city or living in the county? Why? 2 How can you best contribute to your hometown? 4 Make a list of three advantages and three disadvantages of worki...