Explanation

• Foam is a colloid in which gas is dispersed in a liquid.
• Examples include soap foam and whipped cream.

Last verified on 29-10-2026

Explanation

• A neutron is approximately 1842 times heavier than an electron.
• An electron has a mass of approximately 9.11 × 10^-31 kg.
• A neutron has a mass of approximately 1.675 × 10^-27 kg.

Additional information:

• A proton is approximately 1836 times heavier than an electron.

Last verified on 29-10-2026

Explanation

• The azimuthal quantum number (l) determines the shape of an atomic orbital.

Additional information:

• The principal quantum number (n) determines the main energy level.
• It is related to the size of the orbital.
• The magnetic quantum number (m_l) determines the orientation of an orbital in space.
• The spin quantum number (m_s) describes the spin of an electron, which can be +1/2 or -1/2.

Last verified on 29-10-2026

Explanation

Molar mass of Na = 23 g/mol

Formula: moles = mass / molar mass

For 35g:

= 35 / 23 = 1.52 moles

Last verified on 29-10-2026

Explanation

Molar mass of ethyl alcohol (C2H5OH) = 46g/mol

46g = 1 mole

Molar mass of glucose (C6H12O6) = 180g/mol

180g = 1 mole

Both are 1 mole, so both contain Avogadro's number (6.022 x 10^23) of molecules.

Last verified on 29-10-2026