The answer is (3) The average velocity of the gas molecules increases. In the closed rigid cylinder, the volume of the gas and number of gas molecules will not change. The number of collision will increase.
Mendel made dihybrid crosses to determine if certain trait forms and their alleles were inherited together
Answer: A
Reactants combine to make a larger atom and release a neutron. Only A does that.
Answer:
3.08 × 10⁻³ M
Explanation:
A chemist prepares a solution by adding 422 mg (0.422 g) of Co(NO₃)₂. The moles of solute associated with this mass, considering that the molar mass is 182.94 g/mol, are:
0.422 g × (1 mol/182.94 g) = 2.31 × 10⁻³ mol
The volume of the solution is 750 mL = 0.750 L.
The molarity of Co(NO₃)₂ is:
M = moles of solute / liters of solution
M = 2.31 × 10⁻³ mol / 0.750 L
M = 3.08 × 10⁻³ M
