Answer:
element n weighs approximately 14.0067 grams
To test for hydrogen, burn a candle near the suspected source of hydrogen. If you hear a squeaky pop sound, hydrogen is present because when hydrogen gas burns, it makes a squeaky pop sound.
Convection, conduction, Conduction, Convection, Radiation. They are in order.
Please give brainliest
Answer:
I believe it to be a difference in isotopes.
Explanation:
This is because since both are the same element it cannot be allotropes which are on a molecular level so it must be isotopes.
Using the relationship M1V1 = M2V2 where M1 and M2 are the molar concentrations (mol/L or mmol/ml) and V1 and V2 are the volumes of the solutions, we can arrive at the following answer for the given problem:
<span>15.0M (L of stock solution) = 2.35M (0.25L) *all volumes were converted to liters.
L of stock solution = (2.35*0.25)/15.0
Therefore, 0.0392L or 39.17 ml of stock solution is needed. </span>