What does 4 mean in the formula 4na2so3? Answer: The ‘4’ in front of sodium sulfate formula indicates that there are four molecules of sodium sulfate. What does the 4 mean in the formula 4na2so3 there are four atoms of sodium there are four atoms of sodium sulfite There are four molecules of sodium sulfite […]
Is the parking brake a separate braking system?
Is the parking brake a separate braking system? A parking brake controls the rear brakes and is a completely separate device from your vehicle’s regular hydraulic brakes. It is in charge of keeping a parked vehicle stationary; it will prevent the car from rolling down a hill or moving. Which wheel does the parking brake […]
How can we prevent radiation from gadgets?
How can we prevent radiation from gadgets? 10 ways to avoid radiation from your gadgets Never carry cellphones on your body. Cellphone manuals say it should be kept at least an inch from your body. Keep your distance when you talk. Toggle data on and off. Calls are out, messaging is in. Cut the cordless. […]
Is a cookie sheet an insulator?
Is a cookie sheet an insulator? It stops the flow of energy from moving through the material. Many objects that are meant for holding hot objects (soup containers, handles of pots and pans) are made out of heat insulators so that the heat will not transfer through the area it touches. For example, Ted is […]
What are the 4 phases of the moon?
What are the 4 phases of the moon? The four primary moon phases are: New Moon. First Quarter. Full Moon. Third Quarter (Last Quarter) What happens after a full moon? After the full moon (maximum illumination), the light continually decreases. So the waning gibbous phase occurs next. Following the third quarter is the waning crescent, […]
What is the difference between the chemical name and chemical formula?
What is the difference between the chemical name and chemical formula? Chemical symbols refer to chemical elements only. They do not necessarily refer to atoms of that element, but also to ions. Chemical formulas refer to compounds and, specifically, the ratios in which it is made up by different chemical elements. What is the chemical […]
How do skiers reduce drag?
How do skiers reduce drag? Skiers can reduce drag by performing an effective ‘tuck’. To do a tuck, lower your stance and level your back parallel to the slope. This position means less wind hits your body, and the eggs-with-legs shape lets wind cut around you, reducing drag even further. Why do longer skis go […]
How do you find boiling point with temperature and pressure?
How do you find boiling point with temperature and pressure? If the boiling point values for a specified substance at a specified BP temperature and pressure are given, one can determine the Boiling Point at different vapor pressure values using the Clausis-Clapeyron Equation. The Clausis-Clapeyron Equation is derived from VP2=VP1e−ΔHvRT at two different temperatures. What […]
What is gamma spectroscopy used for?
What is gamma spectroscopy used for? Gamma-ray (γ-ray) spectroscopy is a quick and nondestructive analytical technique that can be used to identify various radioactive isotopes in a sample. In gamma-ray spectroscopy, the energy of incident gamma-rays is measured by a detector. How do we measure gamma rays? Scientists can use gamma rays to determine the […]