Question
2 grams of potassium (K) reacts with 5 grams of Oxygen (O). According to the Law of Conservation of Mass, how many grams of potassium oxide (K20) will be produced?
5 grams
10 grams
7 grams
2 grams
5 grams
10 grams
7 grams
2 grams
Answers
GPT-4o mini
According to the Law of Conservation of Mass, the total mass of the reactants equals the total mass of the products.
In this reaction, you're starting with:
- 2 grams of potassium (K)
- 5 grams of oxygen (O)
To find the total mass of the reactants, you add the mass of potassium and oxygen:
\[ 2 \text{ grams (K)} + 5 \text{ grams (O)} = 7 \text{ grams (total reactants)} \]
Thus, according to the Law of Conservation of Mass, the mass of potassium oxide (K2O) produced will also be 7 grams.
Therefore, the answer is:
**7 grams**
In this reaction, you're starting with:
- 2 grams of potassium (K)
- 5 grams of oxygen (O)
To find the total mass of the reactants, you add the mass of potassium and oxygen:
\[ 2 \text{ grams (K)} + 5 \text{ grams (O)} = 7 \text{ grams (total reactants)} \]
Thus, according to the Law of Conservation of Mass, the mass of potassium oxide (K2O) produced will also be 7 grams.
Therefore, the answer is:
**7 grams**