How is pH level calculated? To calculate the pH of an aqueous solution you need to know the concentration of the hydronium ion in moles per liter (molarity). The pH is then calculated using the expression: pH = – log [H3O+]. What solution has a pH of 1? The pH scale Increasing pH (Decreasing Acidity) […]
Why is MRI so loud?
Why is MRI so loud? The MRI machine uses a combination of a strong magnet, radio transmitter and receiver. When the sequences are performed, electric current is sent through a coiled wire-an electromagnet. The switching of the currents causes the coils to expand making loud clicking sounds. What is the main magnetic field? The Main […]
What are three clinical applications of hypnosis?
What are three clinical applications of hypnosis? Hypnosis can also be used for brief symptom focused therapy for pain relief, medical procedures, habit disorders, relief of anxiety, fears, phobias, insomnia and more. How does hypnosis work on the brain? “You do shift into a different kind of brain function when you go into a hypnotic […]
How do you find the length and width of a rectangular prism when given the volume and height?
What are 3 similar properties of the alkali metals?
What are 3 similar properties of the alkali metals? Alkali metals share many similar properties including: They are shiny, soft, metals. They are very reactive. They all have one valence electron in the outermost shell which they seek to lose in order to have a full outer shell. They are soft enough to be cut […]
Is the sun or moon sign more important?
Is the sun or moon sign more important? According to the astrological universe, the moon sign has the second most important influence on an individual’s personality and emotions. Unlike the sun, which seems to tell about what the world already knows about you, the moon sign is personal and sheds light on your inner-self. What […]
What is the pressure on a swimmer 20m below the surface of a lake?
Are blue reverse lights legal?
What do all gas giants have in common?
What do all gas giants have in common? The gas giants have atmospheres that are mostly hydrogen and helium. All four planets rotate relatively rapidly – while Earth spins once on its axis every 24 hours, Saturn spins once every 10 hours. Like Earth, all the gas giants have wind bands. These are seen as […]
Does height affect acceleration due to gravity?
Does height affect acceleration due to gravity? The acceleration of an object changes with altitude. The change in gravitational acceleration with distance from the centre of Earth follows an inverse-square law. This means that gravitational acceleration is inversely proportional to the square of the distance from the centre of Earth. Which force would cause an […]