3. В об'ємі V= 7,5л при температурі Т= 300 К міститься суміш газів: V1 = 0,1 моля кисню, v2 = 0,2 моля азоту і v3 =
0,3 моля вуглекислого газу. Вважаючи гази ідеальними,
знайти тиск суміші та середню молярну масу цієї суміші.

Очень нужно, помогите пожалуйста.

*drag each tile to the correct location in the sequence* the table shows chronological events in the life of our sun, a medium-sized star. place the missing events into the correct rows of the table.

Ihave a density of 1.61g/cm^3 and a mass of 28g. find the missing value

Match each vocabulary term to its definition. 1. electrons neutral subatomic particles found in the nucleus of the atom 2. neutron lowest energy position of an electron in an atom 3. photon the path of an electron around the nucleus of an atom 4. ground state negatively charged, subatomic particles 5. protons packet of energy of specific size 6. element substance with only one type of atom 7. orbital positively charged, subatomic particles found in the nucleus of the atom