C. Oxygen gas, water, and sodium bicarbonate. D. Hydrogen gas, water, and sodium acetate. 相关知识点: 试题来源: 解析 B。中文解析:文中提到“The reaction produces carbon dioxide gas, water, and sodium acetate.”A 选项中的氧气不是该反应产物;C 选项中的氧气不是该反应产物;D 选项中的氢气不...
These gases, ___carbon dioxide (CO2), are ___by burning fuels such as petrol. The Greenhouse Effect may cause the level of the sea to rise and drown cities and even whole countries. The writers tell us that 'ozone is a gas which occurs 20-50 kmabove the gro...
Find the empirical formula of a compound containing 40.6% carbon, 5.1% hydrogen and 54.2% oxygen. What is the empirical formula for carbon dioxide? The molar mass and empirical formula of a compound containing carbon and chlorine are as listed below. Find the molecular formula of this compound...
Step-by-Step Solution:1. Understanding the Components: - Plants require three essential elements: carbon (C), hydrogen (H), and oxygen (O). 2. Source of Carbon: - The primary sourc
A. To produce oxygen and water. B. To produce oxygen and glucose. C. To produce carbon monoxide and glucose. D. To produce nitrogen and glucose. 相关知识点: 试题来源: 解析 B。原因:文中提到“Plants use carbon dioxide during photosynthesis to produce oxygen and glucose.”。 反馈...
What is the main gas in the air we breathe? A. Oxygen B. Nitrogen C. Carbon dioxide D. Hydrogen 相关知识点: 试题来源: 解析 B。我们呼吸的空气中主要气体是氮气。A 选项氧气是维持生命所必需的,但不是空气中的主要气体;C 选项二氧化碳含量较少;D 选项氢气在空气中含量极少。本题考查空气的成分。
Carbon dioxide is a molecule with the molecular formula CO2. The linear molecule consists of a carbon atom that is doubly bonded to two oxygen atoms, 0=C=0. Although carbon dioxide mainly consists in the gaseous form, it also has a solid and a liquid form. It can only be solid when ...
The ocean covers more than 70% of the Earth’s surface. It produces at least half of the planet’s oxygen and absorbs around 30% of the carbon dioxide produced by humans. The sea is home to most of our biodiversity and 3 billion peop...
trees, grasses and soil. These organisms naturally absorb carbon as part of their life cycle, converting it into cellulose which helps them to grow and develop. In return, they release oxygen into the atmosphere, which is then inhaled by humans. The whole process is known as photosynthesis. ...
百度试题 结果1 题目What provides the energy for photosynthesis? A. sunlight B. water C. oxygen D. carbon dioxide 相关知识点: 试题来源: 解析 A。阳光为光合作用提供能量。反馈 收藏