The specific heat capacity of water is 4200J/(kg*℃). So when absorbs 209 joules, the water sample will increase 209/(4200*0.01)=5℃. So the final temperature of sample is 23+5=28℃.
Answer:
in position and time graphs the slope of line indicates the velocity
Answer:
Dispersion forces- Xe, CH4
Dipole-dipole forces-CHCl3
Hydrogen Bonding-HBr, NH3, CH3COOH
Explanation:
Gases and nonpolar molecules posses only dispersion forces. Polar covalent compounds posses dipole- dipole forces. When hydrogen is bonded to a highly electronegative atom, hydrogen bonding results. These account for the arrangement of answers above.
Answer:
Ca^2+
Explanation:
As we know, more energy is required to remove an electron from a positively charged ion than is required to remove an electron from a neutral atom. Hence, the second ionization energy of calcium is greater than its first ionization energy.
However, the third and fourth ionization energies of calcium are much higher than the second ionization energy because they involve removal of electrons from an inner filed shell. This process requires a lot of energy and is often not feasible.
Hence, the most common ion of calcium must be Ca^2+ where only two electrons are removed from calcium.
I am pretty sure it is density
