Answer:
In graphite, each carbon atom is covalently bonded to 3 other carbon atoms. ... These extra electrons are delocalised, or free to move, in the area between layers of carbon atoms. As these electrons are free to move they are able to carry charge and thus graphite can conduct electricity.
Explanation:
This statement is <u>TRUE.</u>
Explanation:
Due to the high heat capacity of water, it takes much more energy to have a gram of water raised by one degree compared to one gram of land. This is why during a hot day, the ground gets hotter faster than the adjacent oceans or adjacent lakes. It also takes water to lose the same amount of energy to have its temperatures drop by one degree as compared to land. During the night, therefore, this is why adjacent water bodies remain relatively warmer than land.
The answer is C: How long does it take distilled water to evaporate from a 5” diameter container?
Answer: 228.8 g of O2 are produced
Work:
1) Write the give balanced chemical equation:
2H2O2 → 2H2O + O2
2) molar ratios
2 mol H2O2 : 2 mol H2O :1 mol O2
3) proportion with the unknown quantity number of moles of O2:
x 1 mol O2
---------------------- = -----------------------
14.3 mol H2O2 2 mol H2O2
4) Solve for x:
x = 1 mol O2 * 14.3 mol H2O2 / 2 mol H2O2 = 7.15 mol O2
5) Use the molar mass of O2 to convert 7.15 mol O2 to grams
molar mass of O2 = 2 * atomic mass of O = 2 * 16.00 g/mol = 32.00 g/mol
molar mass = mass in grams / number of moles
=> mass = molar mass * number of moles
mass of O2 = 32.00 g / mol * 7.15 mol = 228.8 g
Answer: 228.8 g
Answer: 6.48m/s
Explanation:
From the question given, we obtained the following:
M = 50 kg
Velocity =?
Momentum = 324 kg•m/s
Momentum = Mass x Velocity
Velocity = momentum /Mass
Velocity = 324 / 50
Velocity = 6.48m/s