Answer:
About 0.652
Explanation:
Because the reaction is balanced, we can go straight to the next step. The molar mass of potassium is about 39.098, while the molar mass of hydrogen gas is 2 and the molar mass of water is 18. Therefore, 25.5g of potassium would be about 0.652 moles, and 220 grams of water would be about 12.222 moles, making potassium the limiting reactant. Since there is a single unit of each compound on both sides of the equation, there would be an equal amount of moles of potassium and hydrogen, and therefore about 0.652 moles of hydrogen gas would be produced. Hope this helps!
Answer:
The correct answer is 23,4375 grams of C.
Explanation:
First, we will identify the limiting reagent, which is the one consumed first. Since each gram of B consumes two grams of A, the product to be consumed first is A.
We calculate the amount of A and B that is consumed in the first 10 minutes is 5 grams of B and 10 grams of A.
Now we calculate the constant that relates the speed of reaction to the amount of reagent in each component.
20 grams of B and 40 grams of A will react completely given the limiting reagent A. We calculate the constant that relates the reaction speed (grams of product/time) with the instantaneous amounts of unconverted A and B. We calculate the constant that relates the reaction speed (grams of product/time) with the instantaneous amounts of unconverted A and B. We calculate the constant that relates the reaction speed (grams of product/time) with the instantaneous amounts of unconverted A and B.
So:
15g/10min = k*(20g*40g)
k=1.5 g/min / 800 g^2
k=1,875 *10^-3 g^3 /min
Now, we calculate the amount of reagent that forms when 20 minutes pass:
x / 10 min = 1,875 *10^-3 g^3/min * (15g * 30g)
x= 8,4375 grams
So we can say that after 20 minutes, 23.4375 grams of C will form.
Have a nice day!
the answer to your question is radium
The release of O₂( oxygen) from the process of photosynthesis is what made them to be able to float.
<h3>What is Photosynthesis?</h3>
This is referred to as the process in which green plants manufacture their food in the presence of sunlight which is trapped by chlorophyll.They are known as primary producers and they use compounds such as water and carbondioxide.
The reactants mentioned above undergo series of reactions which leads to the production of glucose and oxygen is given off as a result which is the element responsible for the floating of the aspirated spinach leaf disks in this scenario.
Read moire about Photosynthesis here brainly.com/question/19160081
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Hydrogen ions H +(aq) (from the water) are discharged at the negative electrode as hydrogen gas, H 2(g)