How to prepare 15 w% NaOH? Carbon dioxide, CO_2, and ammonia, NH_3, combine to form urea, CH_4N_2O, plus water. Write a balanced equation and calculate the mass of ammonia (in grams) that would be needed to make two moles of urea. Round off to the nearest hundredth. ...
Learn how to filter shower water in your apartment to protect your hair and skin from common chemicals and minerals found in tap water.
First you'll need to define what pure water is to you. It's almost impossible to give one definition of purified water. From a chemist in a lab to a wastewater treatment operator, both may use the term "purify", but it would have completely different meanings. ...
Subsequently, a fully-flushed sample will likely capture a “worst case scenario” (i.e. highest concentration) for things like volatile organic compounds (like chlorine and trihalomethanes), radon, etc. Knowing What to Choose As with all of the Tap Score and SimpleLab tests, each water tes...
Simply combine these ingredients and pour them in a spray bottle to make a homemade cleaner with ingredients you already have on hand. Not only does it do a great job cleaning but the orange essential oil gives it a pleasant natural citrus scent and the rubbing alcohol helps it evaporate ...
The principle of solubility, "like dissolves like," emphasizes the importance of polarity in determining whether substances will mix. Polar molecules, such as water and ethanol, dissolve in each other due to their similar net dipoles. Understanding the polarity of various organic compounds,...
Chlorine Cl 1 97.2% While molarity is usually a convenient way to talk about concentration, sometimes there aren't actually that many moles in the solution. What does that mean? Well, say you have a 0.001 M solution of NaOH. It can be kind of annoying to say 0.001 M. Instead, scientis...
When industrial chemists want to make chlorine and lye through electrolysis, why can't they use electrodes made of common metals, such as silver or iron, or zinc? Explain why copper possesses a high electrical conductivity....
Clean the sponge thoroughly, then dip it into clean water and wring it out well before wiping the surface clean. Let it air dry completely. Follow with a solution of water and bleach: Mix ¾ of a cup of chlorine bleach with a gallon of warm water, or 3 tablespoons of bleach in 1 ...
When the pH is high, more chlorine will be required, which affects the chemical balance in the pool water. Just like acidic pool water, water that has a high pH can irritate the eyes and skin of swimmers and bathers. Not only is high pH linked to personal issues with users, but it ...