Q: Carbon dioxide extinguishes fires, in high concentrations. You'll simply need to hold a small lit flame inside a test tube that you suspect contains CO2. If the gas is present, the flame should go out immediately. Combustion (creation of a flame) is the reaction of oxygen with another substance; it is a rapid oxidation of the organic compound and a reduction of oxygen. The fire goes out because the oxygen is replaced by the CO2, which is not a combustible gas. Bear in mind that any oxygen-free gas will also extinguish a flame in this manner. Thus, this is an unreliable test for carbon dioxide, and it may lead you to misidentify the gas. Make sure that the sample has been properly stored and stoppered before you try to test for CO2. Be reasonably certain that the test tube does not contain any flammable or explosive gases; in this case, the introduction of fire could be dangerous, or at least very frightening. Use a splint or any long, thin strip of wood. In a pinch, a match or a lighter will do – but the further your hands are from the opening of the test tube, the safer your experiment will be. If the flame immediately goes out, there's likely a high concentration of CO2 in the test tube. Fill a syringe with carbon dioxide. Then, use a drop of molten wax to affix a short candle to the surface of a coin. Next, place the candle and coin into a wide-mouthed cup – and light the candle. Equip the syringe with the tubing, and push the syringe to transfer the CO2 to the bottom of the cup. If you push out the entire contents of the syringe within a second or two, the flame should go out.
A: Try using the sample to extinguish fire. Collect the gas in an upside-down test tube. Place a small flame inside the test tube. Alternately, try using a gas syringe to put out a candle.

Q: Spider veins can be caused by a variety of conditions, ranging from simple genetics to skin conditions like rosacea. Treatment depends on the cause of your spider veins, so see a dermatologist to determine the cause. They can recommend treatments from there.  For example, if you're diagnosed with a skin condition such as rosacea, your dermatologist can recommend creams and cleansers to help treat the issue. Prescription topical treatments, such as Mirvaso (brimonidine) or Rhofade (oxymetazoline hydrochloride) may be an option. Laser treatment is one of the most common treatments for spider veins around the nose. Laser treatment involves targeting spider veins topically with lasers in a doctor's office. Laser treatments works well for some people, but others find it is ineffective or causes issues like scaring. Talk over the possibility of laser treatment with a doctor or dermatologist to help determine whether it would be effective for you. When getting sclerotherapy, a dermatologist will inject chemicals into the veins to produce a blood clot. When the clot is reabsorbed by your body the vein will disappear. This procedure is generally reserved for patients with many spider veins. Veinwave is a treatment for spider veins that uses microwaves instead of light to target spider veins. It does come with a slightly reduced risk of side effects in comparison to laser treatment, but it's a new treatment and its long-term effects are unclear. If you're interested in Veinwave, talk to a doctor or dermatologist to determine if it's the best option for you. As Veinwave is a new and still relatively untested option, it's best to use this as a last resort if other methods don't work.
A: See a dermatologist to determine the cause of your spider veins. Get laser treatment. Try sclerotherapy. Ask a dermatologist about Veinwave.

Q: (907 g) of potatoes. Place them in a colander and clean them with cold water.  Keep the potatoes whole if you are using a smaller potato, such as a new potato. Those will not need to be chopped. Cover the potatoes with water and heat them at a medium high setting. Let them boil for 15 to 25 minutes. When the knife goes through the potato, you know they are finished cooking.  ) of butter in the pot while the potatoes drain. If you are using fresh parsley, add 1 tbsp. (0.5 ounces) and if you are using dried parsley, add 1 tsp. (0.17 oz.). Stir the parsley into the melted butter. Add more parsley if you want a stronger herb flavor. You will have to taste the potatoes to judge whether you have enough. Use as much or as little as you like. Add any other seasonings or herbs that you enjoy on the parsley potatoes. Serve the dish warm.
A:
Wash 2 lbs. Peel the potatoes if you decide to cook them without skin. Chop the potatoes into bite sized pieces with a sharp knife. Place the potatoes in a large pot. Stick a knife into the potatoes while they are cooking to determine if they are done. Turn off the heat and pour the potatoes back into the colander to drain. Melt 1/4 cup (2 oz. Add parsley to the butter. Put the potatoes back into the pot and use a large spoon to mix them with the butter and parsley. Sprinkle salt and pepper on the potatoes.