根据第一段中“Well,I willtell you how you can make a simple hydrogenfuel cell at home itself. "可知本题选 A。2.D 细节理解题。根据文章第二段“a9 voltbattery”可知需要的是九伏的电池而不是六伏。由此判断D项为本题正确选项。3.C细节理解题。根据第三段可知,需要九步。4.D细节理解题。根据...
HOW TO CREATE WATER ON THE MOON?Scientists found a lot of hydrogen(氢) in the soil(土壤) on the moon. Now.Chinese scientists have discovered a way to create water from it.H How to make water out of lunar soll?Lunar soilFe(铁)Burn(燃 ) the soil until it's very hot. The hydrogen...
How can hydrogen be produced? A. Only from fossil fuels. B. By burning water. C. Through the electrolysis of water. D. By mixing different gases. 相关知识点: 试题来源: 解析 C。中文解析:文章中提到氢气可以通过水电解获得,使用太阳能和风能等可再生能源。A 选项文中提到要减少对化石燃料的依赖...
Water is made up of two elements, hydrogen and oxygen. How many hydrogen atoms are there in one molecule of water? A. One B. Two C. Three D. Four 相关知识点: 试题来源: 解析 B。解析:一个水分子的化学式是H₂O,这表示一个水分子由两个氢原子和一个氧原子组成,所以答案是B。A选项一...
1. A process for the photochemical catalytic splitting of water to produce hydrogen, inter alia, characterized in that metal dithiolenes of the type 1, metal dithio-oxamides of the type 2, or metal dithiocarbamates of the type 3, having ... KISCH HORST DR. 被引量: 4发表: 1980年 Synthes...
How to Make Hydrogen Water for DrinkingTo learn EVEN MORE about how exactly alkaline water and H2 come together to form the BEST combo for your health…you’re going to want to pick up this FREE Water Ionizer Buyer’s Guide ASAP.The best way to enjoy the therapeutic benefits of hydrogen-...
To make drying drops at home, mix 1 part white vinegar to 1 part rubbing alcohol. Pour 1 teaspoon of the solution into each ear; tilt your head and let it drain out. Don’ts for Getting Water Out of Your Ears Using the wrong methods for getting water out of your ears can scratch ...
s Test Kitchen, thenSaveurand thenBon Appetit. But none of them seem to have a recipe for how to make boiling water at home. Then I visited my favorite popular food blogs:Simply Recipes,The Pioneer Woman,David Lebovitz,Gluten Free Girl. Nothing. I mean boiling water is naturally GLUTEN ...
Water consists of hydrogen and oxygen, and the approximate ratio, by mass, of hydrogen to oxygen is 2:16. Approximately how many grams of oxygen are there in 144 grams of water? 选项: A、16 B、72 C、112 D、128 E、142 答案: D Problem Solving 提问 最新 问个问题 我想问: 提交...
Mix baking soda with water to make a paste. Apply it directly onto the stains. Let the paste sit for up to 15 minutes. Lightly scrub with an old brush. Vinegar Regular vinegar works for cleaning hard water stains, but you can also opt for the more acidic cleaning vinegar. Squirt vinegar...