<u>Answer:</u> The moles of given hydrocarbon is 0.3 moles
<u>Explanation:</u>
To calculate the number of moles, we use the equation:
We are given:
Given mass of ethane = 10.0 g
Molar mass of ethane = ![[(2\times 12)+(6\times 1)]=30g/mol](https://tex.z-dn.net/?f=%5B%282%5Ctimes%2012%29%2B%286%5Ctimes%201%29%5D%3D30g%2Fmol)
We need to divide the given value by the molar mass.
Putting values in above equation, we get:
In case of multiplication and division, the number of significant digits is taken from the value which has least precise significant digits. Here, the least precise number of significant digits are 1.
Hence, the moles of given hydrocarbon is 0.3 moles
Answer:
When the temperature of an object increase, the object's particle move faster.
Explanation:
Energy in form of the heat can be absorbed by the object, energy is translated to object's particles. In that moment, energy is transformed in another form - kinetic energy. Kinetic energy manifest as a faster particle movement ( or vibration ).
Answer:
Correct: B
Explanation:
The first block wont move because:
Σf=3-3=0N.
The second block will move because:
Σf:5-3=2N (direction to the right).
The third block will move because:
Σf=3N (direction to the right).
Answer:
A: Beryllium (Be)
Explanation:
the traits listed are traits of metals, and beryllium is the only choice presented that is a metal.
Sodium mn2 and po4 makes sodium
