Fuel Cells

Hydrogen fuel cells can vary significantly in size, depending on their application. Small fuel cells, used in portable electronics or vehicles, can be as compact as a few cubic inches, while larger systems, such as those used in buses or stationary power generation, can be several meters in size. Industrial-scale fuel cells can even be designed to occupy entire buildings or container-sized units. Ultimately, the size is determined by the power output requirements and the intended use.

The primary difference between wet and dry HHO fuel cells lies in their operating states regarding water presence. A wet HHO fuel cell uses a liquid electrolyte, which helps facilitate the electrochemical reaction, while a dry HHO fuel cell employs a solid or membrane electrolyte, resulting in a more compact and potentially more efficient design. Wet cells can be bulkier and may require more maintenance, whereas dry cells are typically easier to handle and maintain due to their solid-state components. However, both types aim to produce hydrogen and oxygen through electrolysis for energy generation.

Hydrogen fuel-cell buses operate by converting hydrogen gas into electricity through a chemical reaction with oxygen in a fuel cell. This process generates electricity that powers electric motors, driving the bus. The only byproducts of this reaction are water vapor and heat, making it an environmentally friendly alternative to traditional fossil fuel-powered buses. Additionally, these buses can be refueled quickly, similar to conventional vehicles, enhancing their practicality for public transportation.

Amyotrophic lateral sclerosis (ALS) progresses at varying rates for different individuals, but it typically leads to significant physical decline within 2 to 5 years after diagnosis. Some people may experience a more rapid progression, while others can live for many years with the disease. Ultimately, ALS affects muscle control and strength, leading to paralysis and impacting respiratory function, which significantly shortens life expectancy. Ongoing research aims to better understand the disease and find effective treatments.

Fuel cells are important because they provide a clean and efficient way to generate electricity by converting chemical energy directly into electrical energy, typically using hydrogen and oxygen. Unlike traditional combustion-based power generation, fuel cells produce minimal emissions, primarily water vapor, making them environmentally friendly. They are vital for advancing renewable energy technologies, enhancing energy storage solutions, and supporting the transition to a hydrogen economy. Additionally, fuel cells have applications in various sectors, including transportation, stationary power, and portable electronics, contributing to energy diversification and security.

Yes, there are several step-by-step guides available for constructing a microbial fuel cell (MFC). These guides typically outline the necessary materials, such as electrodes, a container, and a microbial culture, as well as detailed instructions on assembling the components, preparing the culture, and optimizing the conditions for electricity generation. Many resources, including academic papers, DIY science websites, and educational videos, provide comprehensive instructions for building an MFC at home or in a laboratory setting.

False. Chromosomes are larger than genes. Chromosomes are structures within cells that contain many genes, which are segments of DNA that code for specific traits or functions. In essence, chromosomes are made up of DNA, which includes multiple genes along their length.

Yes, fuel cells can be reused, but their lifespan and efficiency depend on factors such as the type of fuel cell, operating conditions, and maintenance. Regular upkeep and proper management of the fuel source can extend their life and performance. However, eventually, components may degrade, necessitating replacement or refurbishment. Overall, while they can be reused, their effectiveness may diminish over time.

Hydrogen fuel cell vehicles primarily emit water vapor as a byproduct of the electrochemical reaction that generates electricity. For every kilogram of hydrogen consumed, approximately 9 kilograms of water vapor are produced. This means that while they are efficient and produce no harmful emissions, they do release water, which can be a significant amount depending on vehicle usage. Overall, the water produced is generally harmless and can even contribute to the environment in some contexts.

The gas-powered fuel cell was developed by a team led by Dr. John B. Goodenough in 1997, in collaboration with other researchers. Dr. Goodenough is also known for his work on lithium-ion batteries. Their innovation helped advance the field of fuel cells, contributing to cleaner energy technologies.

Hydrogen fuel cells can significantly impact society by promoting cleaner energy solutions, which can reduce urban air pollution and improve public health. Their implementation can also create jobs in the green technology sector and stimulate economic growth through new industries. Furthermore, hydrogen fuel cells can enhance energy security by diversifying energy sources and reducing dependence on fossil fuels. However, challenges such as infrastructure development and public acceptance must be addressed for widespread adoption.

It is not recommended to create a fuel cell for a sky lantern as it can be dangerous. Commercially available sky lanterns are designed with safe fuel cells that should be used as intended. It is important to follow the manufacturer's instructions to ensure the safe use of sky lanterns.

A fuel cell is a device that converts the chemical energy from a fuel into electricity through a chemical reaction. It is useful in spacecraft because it provides a reliable and efficient way to generate power in space without the need for combustion. Fuel cells have high energy density, are lightweight, and produce clean electricity, making them ideal for use in space where reliability and efficiency are crucial.

The fuel cell oxygen tanks on the Apollo 13 spacecraft malfunctioned on April 13, 1970, during the mission to the Moon. This failure resulted in a critical situation that jeopardized the lives of the astronauts on board.

Because a fuel cell converts the chemical energy of a fuel and an oxidant into electricity. This means that the space craft uses this electricity to work. It is basically like a giant battery which powers the space craft.

Hope this answers your question.

A fuel cell is important to a spacecraft because it provides a reliable and efficient source of electrical power by converting chemical energy directly into electricity without combustion. This is crucial for powering critical systems, such as life support and communication, in space missions where traditional power sources like solar panels may not be as effective. Additionally, fuel cells generate water as a byproduct, which can be used for various applications in space.

When fuel cells are shut down, astronauts cannot generate electrical power for the spacecraft, leading to a loss of energy for life support systems, communication equipment, and other critical spacecraft functions. This can impact the ability to maintain a safe and habitable environment in space.

Spacecraft use fuel cells because they are lightweight, efficient, and reliable sources of power. Fuel cells can generate electricity by combining hydrogen and oxygen, producing water as a byproduct, making them a clean energy solution for space missions. Additionally, fuel cells can provide continuous power for long-duration missions in space.

they are used to provied power and water for the spacecraft so the space craft could'nt really survive with out fuel cells

Because fuel cells do actually fart it's well documented. And they do a poo when they get tired! < SOOO TRUE!!

because hydrogen is in the fuel cell. hydrogen is useful in many things including spacecrafts. please do not use this for anything important because I'm not sure but i been reading this page about hydrogen and it is true. I know for sure that hydrogen is used for rocket fuel because it is on the sheet. By Georgina thank you 4 going on wikianswers.com

Humans have a complex circulatory system to efficiently transport oxygen, nutrients, hormones, and waste products to and from cells throughout the body. Amoebas, being single-celled organisms, can rely on simple diffusion to exchange gases and nutrients with their environment due to their small size and surface area.

The testes are responsible for producing male gametes, which are sperm cells. Sperm production occurs within the seminiferous tubules of the testes through a process called spermatogenesis.

Fuel cells are important to Earth because they provide a clean and efficient way to generate electricity without producing harmful emissions like greenhouse gases or pollutants. They can help reduce our reliance on fossil fuels and contribute to a more sustainable energy future by using hydrogen, a clean energy carrier that can be produced from renewable sources.

Hydrogen peroxidase is an enzyme that breaks down hydrogen peroxide. It is typically found in organelles called peroxisomes within the cell, where it helps to regulate reactive oxygen species levels and protect the cell from oxidative damage.

Hydrogen fuel is not inherently bad, but there are challenges associated with its widespread adoption such as high production costs, lack of infrastructure for distribution, and the carbon footprint of current production methods. Additionally, storing and transporting hydrogen can be difficult due to its low energy density.