Ammonia is acolourless gaswith a characteristically pungent smell. It is lighter than air, its density being 0.589 times that of air. It is easily liquefied due to the strong hydrogen bonding between molecules; the liquid boils at −33.3 °C (−27.94 °F), and freezes to white crystals...
When pure oxygen is condensed, why does it turn into a liquid? Answer and Explanation: The physical state of matter (solid, liquid or gas) depends on intermolecular distance. The intermolecular distance is the result of a balance of... ...
Explain why, when performing an extraction, it is better to use 3x2ml instead of 1x6ml? For which of the following situations is it appropriate to perform a recrystallization? WHY or WHY not ? (A) To purify an impure liquid (B) To purify an impure solid (C)The melting point of a ...
a) because the air bubbles in the ice make it lighter b) because ice is a solid and water is a liquid c) because ice has a lower density d) because ice is packed tighter than water 2. At what temperature does water freeze? a) 0 degrees centigrade b) 100 deg...
You can't see the water vapor, because it's a gas, but it is still there.由于水蒸气是气态的，所以我们看不到它，但它依然真实存在。Water can be either solid as ice, liquid as water, or gas, which is a vapor.水能以固态存在，比如冰；能以液态存在，比如水；或以气态存在，那就是水蒸气...
aNote in the figure below that the H2O molecules remain H2O regardless of the physical state (solid, liquid, or gas). 不管物理状态固体、液体或者气体,笔记在图在 (那之下H2O分子依然是H2O)。[translate] awho gave me a morning kiss 开始[translate] ...
Why is it necessary to heat the hydrate gently at first and then more strongly only after most of the water has been driven off? Explain why it is important to drink 8 cups of water in a day. What effect does water have on the body? Explain why a liquid should not be di...
acomplete combustion produces mainly carbon dioxide (CO2) and water (H2O); however, small quantities of carbon monoxide (CO) and partially reacted flue gas constituents (gases and liquid or solid aerosols) may form. Most conventional fuels also contain small amounts of sulfur, which is oxidized...
We all know we need to drink it, but have you ever wondered why this humble liquid holds the key to our very existence? Let's dive into the fascinating world of H2O and uncover its incredible importance! The Ultimate Body Booster Think of your body as an intricate ...
<p><strong>Step-by-Step Solution:</strong></p><p>1. <strong>Understanding the Role of Sodium Carbonate</strong>: Sodium carbonate (Na2CO3) is commonly used in qualitative analysis as it can extract anions from a mixture. However, it also contains carbona