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1 What is purple litmus? Advantages of blue litmus compared to other PH indicators Purple litmus or litmus paper – paper impregnated with an ethanol solution or water with a colorant is isolated from the roots of lichens Roccella and Dendrographa . This paper was originally purple in color and was used in chemistry experiments and pH measurements. After use, litmus paper will change to another color. Fast results (usually used in experiments) are the biggest advantage of red litmus. Besides, litmus paper is also used to distinguish gases. Therefore, purple litmus is indispensable in current experiments or laboratories. 2 Classification of purple litmus Purple litmus paper is divided into two main types: red litmus paper and blue litmus paper. Red litmus paper : Made by treating plain paper and a dye soaked in a dilute solution of sulfuric acid . Next, they are brought to dry by direct contact with the air. Blue litmus paper: When blue litmus paper is dipped in a s

1 How to break the padlock when losing the key with simple items Break the padlock with bobby pins You need to prepare: An L-shaped toothpick. An ordinary clamp. Follow the steps below: Step 1 : You create a fixed point on the lock, using an L-shaped toothpick into the largest slot of the lock slot. Step 2 : Then, you use the remaining clamp to put in the rest of the lock slot. Step 3 : Using skillful hands, slowly raise all the heights of the locking balls. Pay attention to stuck latches. Step 4 : If you have lifted all the locking balls, then you can pull out the normal toothpick. Then, you turn the L-shaped clamp in the forward direction of the drive to open. As long as you hear a "click", it means you have successfully unlocked. This unlocking method requires you to have: Extensive knowledge, expertise in locks. Clever, meticulous, new details can be unlocked easily. Break the lock with zinc wire, steel You need to prepare: A pie

1 Soak sticky rice in ash water Ash water is also an alkaline environment, so after cooking, the sticky rice in the cake is cooked quickly and is very clear. This method can also be applied effectively with banh chung and many other types of cakes such as little cake, gai cake. Usually you soak sticky rice in ash water for about 3-4 hours or overnight. 2 Use the leaves of the galangal tuber Use crushed galangal leaves to mix with sticky rice water right before wrapping the cake, so the cake will have a bright green color from the shell to the filling and have a very special aroma again. 3 Fresh lemonade Squeeze a little lemon juice into the sticky rice before wrapping, so the cake will cook faster. But do not soak for a long time because the sticky rice may disintegrate into powder. 4 Use baking soda When cooking, add a little to keep the leaves green and the cake also cooks faster, as well as when boiling vegetables, add a little pepper to keep the green color.

Microphone howling is the most common case when you have the opportunity to sing karaoke. If the microphone howling situation persists, then: You will feel uncomfortable, stinging ears due to the howling sound. Speakers will easily be damaged , even burned . Why? When the microphone is howling, it means that your speaker is experiencing something unusual. If the situation of the microphone howling for a long time, the speaker cone will easily get hot and lead to a speaker fire. Why is karaoke microphone howling? There are many causes of howling: Microphone position is straight and close to the speaker The microphone appears howling due to the position of the microphone opposite and close to the position of the speaker . When you sing, the microphone records and emits the speaker, accidentally the sound emitted from the speaker is recorded by the microphone and amplified exponentially. That creates many such cycles, causing the microphone to be howled. Appears sou

Now that you have a recording studio on hand, a compact karaoke space can sing anywhere, including duets with celebrities, creating MVs and albums for yourself. Today, we will introduce you to 15 karaoke applications on your phone, so you can sing anywhere! 1 Software on PC Karaoke software Karafun Player Karaoke software Karafun Player Karafun Player software provides a simple and easy-to-use karaoke experience . You can sing karaoke without an internet connection by synchronizing songs to playlists. Songs on Karaoke Player software are up to more than 38,000 songs, constantly being updated. In addition, you can sync more songs from your computer library to sing promises to bring you the best music experience. You can completely adjust the tone and tempo of the song to your liking on the software. Depending on the voice, you can raise or lower the tone of the song, as well as set the song to be faster or slower. Download link Karaoke Karafun Player Karaoke software Wala

1 What is AirDrop? What to do? AirDrop is a method of transferring content (pictures, music, videos) from Apple's iOS devices to each other. The way Airdrop works is similar to how you "shoot" a picture with Bluetooth on an Android phone. Through AirDrop files are sent quickly at a speed faster than email. Besides, AirDrop also allows users to share music from iTunes, share maps, contacts and even applications on Apple devices. An iPhone with AirDrop will allow you to easily transfer content to, or an iMac, . However, AirDrop cannot be used with other operating systems (, Windows Phone phones,…). 2 How to enable AirDrop on Apple devices On iPhone and iPad Step 1: Open the Control center panel by placing your finger on the bottom edge of the screen and then swiping upwards (for this you need to swipe down from the right corner of the screen). ). Step 2: Hold down one of the Wifi or Airplane mode, Bluetooth, Cellular data icons in the left corner of t