Chemical is the answer your looking for.
If your choices are the following: A.Neutrons released during a fusion reaction cause other nuclei to fuse.
B. Neutrons released during a fission reaction cause other nuclei to split.
C. Helium nuclei released during a fission reaction cause other nuclei to split.
D. Helium nuclei released during a fusion reaction cause other nuclei to fuse.
Then the answer is B. In fission, the nuclei is splitted and releases neutrons causing another chemical to form.
Answer: The number of collisions increase
Explanation: When temperature increases, that means the molecules move faster having a higher average kinetic energy. Therefore, the number of collisions increase.
Answer:
mass of hydrogen collected is 0.016 gram
Explanation:
Given values:
For calculating mass we have to find the number of moles first
Ideal gas equation PV =nRT
Volume= 195 ml
Pressure: 753 torr =0.99 atm
Temperature: 25+273= 298 Kelvin
Ideal gas constant R= 0.0821 Latm/molK
Number of moles n= ?
So n= PV/RT
Adding the values
n= = (753 torr)(1 atm/760 torr)(195 mL)(1 L/1000 mL)/(0.0821 L·atm/mol·K)(273 K)
n = 0.007897 moles of H₂
Now mass of hydrogen collected = number of moles x Molar mass of H₂
= 0.007897 x 2
= 0.0157 g H₂
Now mass of hydrogen collected is 0.016 gram (rounding the amount)
C. because a color change can occur due to chemicals mixing, but it can also be a physical change because you can see it happen with your eyes.