Copper + sulfur create copper sulfide.
It's a lengthy process to find the empirical formula:
Sulfur:
Copper:
S:Cu => 
=> 
=> 
The empirical formula would just be 
Answer: warmer because its an exothermic reaction.
Explanation: the passage states as the products form thermal energy is absorbed thermal means heat also carbon dioxide creates bubbles
Answer:
Explanation:
We will need a balanced chemical equation with masses, moles, and molar masses.
1. Gather all the information in one place:
M_r: 2.016 17.03
3H₂ + N₂ ⟶ 2NH₃
m/g: 6.33 × 10⁻⁴
2. Calculate the moles of H₂
3. Calculate the moles of NH₃
The molar ratio is 2 mol NH₃/3 mol H₂.
4. Calculate the molecules of NH₃
There are 6.022 × 10²³ molecules of NH₃/1 mol NH₃.
Answer:
Option (B)
Explanation:
Crystals are usually defined as those substances that are comprised of atoms, ions, and molecules, and they are oriented in a very well-developed and ordered microscopic structure. These crystals are interlinked to one another by strong chemical bonds, namely the metallic, covalent, ionic and Vander Waals bond. In nature, these crystals form when any liquid undergoes cooling and solidifies.
The study of crystals is commonly known as crystallography and is directly associated with the minerals.
Thus, the correct answer is option (B).
Ast two answers meet that criteria and are identicla except for number of sign digits
<span>35.4 has 3 sign didigits </span>
<span>0.961 g/ml is your answer</span>
