Answer:
12 grams
Explanation:
the mass of 1 mole of carbon is equal to the number of atoms in 12 grams of carbon-12; this number is referred to as Avogadro's number and has been measured as approximately 6.022 x 1023.
It is true. Since it is very reactive with oxygen and water, it is kept in kerosene or some other some other oil
Explanation:
Since there are no gas constant with the unit of mmHg, you just have to use the gas constant for atm, and then convert that into mmHg
"There are three rules on determining how many significant figures are in a number: Non-zero digits are always significant. Any zeros between two significant digits are significant. A final zero or trailing zeros in the decimal portion ONLY are significant."
Answer:
The energy and speed both increase
Explanation:
Heating means energy is supplied to the system. Energy is used to increase internal energy of the system by increasing kinetic energy. Therefore, by heating, energy of the system increases.
Heat also increases the energy of water molecules which increases rate of the frequency of collision that lead to increase in velocity.
Therefore, among the given options option A is correct.