Semtex is a general-purpose plastic explosive containing RDX and PETN. It is used in commercial blasting, demolition, and in certain military applications. What is Semtex and how does it work? Explosives such as Semtex, C4 or P4 detonate in a … Continue reading →

Melting and boiling points: Ionic compounds tend to have higher melting and boiling points than covalent compounds. Mechanical properties: Ionic compounds tend to be hard and brittle while covalent compounds tend to be softer and more flexible. Are molecular compounds … Continue reading →

If you have to define the meaning of electrical conductors in the simplest way, they are materials that allow electricity to flow through them easily. If we compare two types of material and the first one allows better flow of … Continue reading →

Covalent compounds (solid, liquid, solution) do not conduct electricity. Metal elements and carbon (graphite) are conductors of electricity but non-metal elements are insulators of electricity. Which substance does not conduct electricity in any state? NaCl is not a conductor of … Continue reading →

After decades of international pressure by a UN group, leaded gasoline is no longer being produced. The last leaded fuel has finally disappeared from gas stations. The last country in the world to sell it: Algeria. Can you buy leaded … Continue reading →

A disadvantage is that if you are repeatedly exposed to this toxic element, it can cause anemia, brain damage and high blood pressure. An advantage is that lead has a low melting point, so it is easy to shape and … Continue reading →

chemical energy. A battery is a device that stores chemical energy and converts it to electrical energy. The chemical reactions in a battery involve the flow of electrons from one material (electrode) to another, through an external circuit. What type … Continue reading →

In order to store your batteries correctly, you should keep them in their original packaging, or place them in a plastic container – NEVER store batteries inside equipment. Should I remove batteries when not in use? DO preserve battery life … Continue reading →

Smell: Some explosive materials smell of marzipan or almonds. Noise: Ticking or hissing sounds may indicate the presence of an explosive device. What does explosions smell like? Nuclear explosions dont have a smell. It’s a essentially a pure release of … Continue reading →

The majority of modern ceiling fans use less than an amp, averaging between 0.5 and 1 amp, depending on the model and the setting. One amp drawn by a ceiling fan is equivalent to about 120 watts. Low settings use … Continue reading →

lead acid batteries, as well, have a similar life span in terms of cycles. Many manufacturers point to a similar figure of at least 1,000 charging cycles if used in proper conditions. What is the cycle life of the lead … Continue reading →

The leds alone have a forward voltage of 3.6V at their typical nominal forward current, so you add in the voltage drop across the resistor, and 9V won’t cut it. Can I run LED lights on 9V battery? LEDs will … Continue reading →

Can I use bottled water to mix infant formula? Yes, you can use bottled water to reconstitute (mix) powdered or liquid concentrate infant formulas, but be aware that the fluoride content in bottled water varies. Can I use regular bottled … Continue reading →

Rotate tires every 6-10k miles, check brake linings and lube caliper slides every year, replace cabin air filter every 2 years, check brake fluid every 2 yrs and replace as necessary. How much does it cost to maintain a Mustang … Continue reading →

Species of Zinc Salts. Generally, in the electrolyte, the anions can take part in the Zn2+ ion solvation process. Therefore, the compatibility with electrodes and the coordination with Zn2+ ions, which is dominated by the nature of anions, may be … Continue reading →