Hydrogen Fuel cells
What is a fuel cell?
A fuel cell is an electrochemical cell that converts the chemical energy of a fuel and an oxidizing agent into electricity through a pair of redox reactions.
What is Application of Covalent Compounds?
Most of the things that we eat and use are made up of covalently bonded compounds. For example, plastic, petroleum and wood. Water is a covalent compound and is used for various purposes. Even food that we eat and the oxygen that we breathe is in the form of covalently bonded molecules.
What are Optics of Telescopes?
An optical telescope is a telescope that gathers and focuses light, mainly from the visible part of the electromagnetic spectrum, to create a magnified image for direct view, or to make a photograph, or to collect data through electronic image sensors.
What is Optics of Light Microscopes?
The optical microscope, also referred to as a light microscope, is a type of microscope that commonly uses visible light and a system of lenses to generate magnified images of small objects.
What is Weather Forecasting?
Weather forecasting is the application of science and technology to predict the conditions of the atmosphere for a given location and time. People have attempted to predict the weather informally for millennia and formally since the 19th century.
What is Hydrogen fuel cells?
Hydrogen + Oxygen = Electricity + Water Vapor
What are the properties?
Covalent compounds have bonds where electrons are shared between atoms. Due to the sharing of electrons, they exhibit characteristic physical properties that include lower melting points and electrical conductivity compared to ionic compounds.
How do Optics of Telescopes work?
A telescope is a tool that astronomers use to see faraway objects. Most telescopes, and all large telescopes, work by using curved mirrors to gather and focus light from the night sky.
What are they used for?
Optics of Light Microscopes are used in science labs and experiments. They are used to review a chemical or a particle of some sort to take observation.
How does Weather Forecasting work?
Weather forecasts are made by collecting as much data as possible about the current state of the atmosphere (particularly the temperature, humidity and wind) and using understanding of atmospheric processes (through meteorology) to determine how the atmosphere evolves in the future.
What is it used for?
It can be used in cars, in houses, for portable power, and in many more applications. Hydrogen is an energy carrier that can be used to store, move, and deliver energy produced from other sources.
How are Covalent Compounds conducted?
Although solid ionic compounds do not conduct electricity because there are no free mobile ions or electrons, ionic compounds dissolved in water make an electrically conductive solution. In contrast, covalent compounds do not exhibit any electrical conductivity, either in pure form or when dissolved in water.
What was the first telescope?
The founder of Telescopes was Hans Lippershey in 1608.
When and who built the first Light Microscopes?
First Light Microscope was built in 1595 by Zacharias Jansen in Holland
Why is Weather Forecasting important?
The weather forecast help protect life from a lot of natural disasters. The Forecast will tell you whether you need such things in order to go out and be safe
How do Hydrogen Fuel Cells work?
A fuel cell is a device that generates electricity through an electrochemical reaction, not combustion. In a fuel cell, hydrogen and oxygen are combined to generate electricity, heat, and water.
What are Covalent Compounds composed of?
A covalent compound is made when two or more nonmetal atoms bond by sharing valence electrons. The shared valence electrons between two nonmetal atoms is called a covalent bond.
Where was the first telescope made?
the Netherlands.
What lens does a microscope use?
Optical microscopes use a combination of objective and ocular lenses (eyepieces) for imaging. The observation magnification is the product of the magnifications of each of the lenses. This generally ranges from 10x to 1,000x with some models even reaching up to 2000x magnification.
How does the weather affect us?
It affects us in many ways, such as the climate can grow to a rate where our crops can grow healthy and it becomes edible. It can also affect us in a bad way. If precipitation was increased to a high rate chance of a tsunami are very high.
Are Hydrogen Fuel Cells dangerous?
In enclosed locations with normal temperatures, spilled liquid hydrogen will create enormous gas pressures, tearing apart vessels without safety valves. The two prime dangers from fuel cell and hydrogen-powered vehicles are the danger of electrical shock and the flammability of the fuel.
Why Covalent Compounds are insoluble in water?
Covalent bonds are insoluble in water (H2O) , but covalent compounds are. This is because some organic compounds (covalent) contain the polar −OH group which can bond to a hydrogen ion to form water.
What mirrors do Telescopes use?
Concave mirrors
Can Optical Microscopes see viruses?
Because the wavelengths of visible light range from roughly 300 to 800 nanometers, viruses aren't exactly visible under normal lighting. Only optical fluoresce microscopes can see inside a virus, and then only indirectly, using dye, which cannot actually penetrate a virus.
How do seasons affect humans?
It doesn't just affects us physically but it affects us emotionally. Scientist have shown that depending on the season our mood will change. Example during the winter most human beings moods will change from a happy mood to something miserable where as in the summer most humans are happy.