First, we need to know what are the chemical formulas of the substances involved in the reaction. It is as follows:
<span>Lead IV oxide = PbO2
Lead II oxide = PbO
Then, the balanced chemical reaction be written as:
PbO2 = PbO + 1/2O2(g)
Oxygen should be the colorless gas being produced in the reaction.</span>
The answer is “C“ since the earth rotation makes it seem like the stars and sun is moving when in reality we are moving ฅ^•ﻌ•^ฅ
The scientific notation of 420,000 is : 4.2 x 10 ^ 5
Answer:
D
. A substance with a pH of 8
Explanation:
pH stands for <em>"Potential for Hydrogen." </em>This is an indicator of a solution's acidity or alkalinity. It is also used to tell <em>which chemicals are great for cleaning. </em>
pH 7 and pH 8 are both considered<em> "neutral pH,"</em> thus, solutions with these pH are often used as<em> dishwashing detergents </em>because they do not destroy the surfaces of objects. However, pH 8 is said to be<u> more alkaline in nature</u>. This allows it to destroy the residues, such as <em>fats and oils</em>, in pots and pans. It is the<em> pH of baking soda.</em>
Answer: ch4 + 2o2 --> co2 + 2h2o Now let's convert the grams of methane and oxygen to moles and see which one is the limiting reagent. 8 g methane (1 mole/16 g) = 0.5 mole methane
Explanation: