What is the full meaning of pH? potential of hydrogen The letters pH stand for potential of hydrogen, since pH is effectively a measure of the concentration of hydrogen ions (that is, protons) in a substance. The pH scale was devised in 1923 by Danish biochemist Søren Peter Lauritz Sørensen (1868-1969). What is the best definition of pH? pH is a measure of hydrogen ion concentration, a measure of the acidity or alkalinity of a solution. The pH scale usually ranges from 0 to 14. Aqueous solutions at 25°C with a pH less than 7 are acidic, while those with...

What causes a gas fireplace to go on and off? A thermo pile enables gas to move through the burner system, delivering the gas fireplace's heat and light. One of these devices could have gone bad or may have shorted out, causing your fireplace to turn shut down or turn back on at random. How to troubleshoot a gas fireplace that stops working? Troubleshooting a Fireplace That Stops Working 1 Check the main gas valve. The first thing that you should do is to check the main gas valve. 2 Check the pilot. The pilot light systems are actually the...

What is the rough opening for a 30 door? So if each door measures 30 inches wide, the width of the rough opening should be 62 inches. For the height of the rough opening, you need to add 2 ½ inches to the height of the door. If your door's height is 80 inches, then the height of the rough opening should be 82 ½ inches. What's the rough opening for a 40 inch door? The standard width of a steel entry door's rough opening is 3' 4” (40”) for a single door and 6' 4” (76”) for a double...

What size of wire is needed for a 100-amp service? The cable must have a wire gauge sufficient to the amperage of the subpanel—a 100-amp subpanel requires #4 copper wires or, more commonly, #2 aluminum wires, for example. (Aluminum is often used for feeder cables because the cost is typically much lower than that of copper wires.) What wire do I use for a 100-amp sub panel? When installing a 100-amp sub-panel, you will need to use either 4AWG (American Wire Gauge) copper cable or 2 AWG aluminum, three-conductor cable. Aluminum cable is cheaper than copper cable and carries the...

How can I get my garage door opener to open? Gain access to the garage doors motor attached to the garage ceiling. Move the switches on the garage door motor unit to match the code you just set on your remote controls. Test to be sure the remote controls open your garage door. If the door does not open then recheck your switch positions to be sure they match. How can I change the frequency of my garage door opener? Older garage door openers used DIP switches to set the frequency of the garage door opener. (usually 9,10 or 12...

What are the best salt water pool systems? Top 13 Salt Water Pool Systems ComparisonHayward Goldline AQR9 AquaRite. Maximum capacity: 25,000 gallons. SGS Breeze 540. Maximum capacity: 40,000 gallons. Pentair 521105 IntelliChlor IC60. Maximum capacity: 60,000 gallons. Circupool SJ-40. Maximum capacity: 40,000 gallons. Hayward Goldline PL-PLUS AquaPlus. What size salt water do I need? For a swimming pool that's 24,000 gallons, we would recommend getting a Salt Cell that is rated for at least ⅓ larger than your pool size. This means that you'll need a Salt System that is rated for 40,000 gallons. How long do salt water pool...

Does vinegar get rid of sewer smell? The trusty non-toxic combo of baking soda and vinegar can clean drains naturally. Add one cup of baking soda to the clogged toilet or slow drain, then wait a few minutes. Follow with two cups of vinegar. Listen for bubbling and sizzling noises to indicate that the mixture is working. Why should I pour bleach down my bathroom sink? Bleach kills bacteria, which is why it's a good disinfectant. Your septic tank is full of bacteria, but they're beneficial ones, and without them, your septic system won't work. The bacteria digest the waste...

What is difference between power and leadership? Power is a person's ability to control activities of other individuals. Leadership is the ability to inspire people to follow your instructions voluntarily and manage the completion of a project without exercising any form of force. What followership means? 1 : following. 2 : the capacity or willingness to follow a leader. What is the power relationship between leaders and followers? Leaders and followers are influenced by each other Leaders influence their followers according to the company's needs, while followers influence leaders with their attitude and actions – it can have both positive...

Why are tailing dams unsafe? The following points are the reasons why tailings dams are more susceptible to damage than other types of water storage structures: (1) embankments constructed with soil, coarse waste, and residual materials from the mining operations; (2) the number of wastewater increases as the height of the tailings dam increases; ... How does a tailings pond work? Tailing ponds are areas of refused mining tailings where the waterborne refuse material is pumped into a pond to allow the sedimentation (meaning separation) of solids from the water. The pond is generally impounded with a dam, and known...

Can you revive a dry battery? A battery that's boiled dry, due to being exposed to excessive heat, won't contain any fluid and sulfation may have formed on the lead plates. It may be possible to repair the battery, depending on the level of sulfation that's formed. What causes a battery to dry out? Dry out – or water loss – is cause where overcharging increases the acid concentration in the electrolyte. This also increases self- discharge and sulfation rates. As the battery gases, it loses water, leading to eventual dry- out, capacity loss, and ultimately separator (insulator) breakdown. How...