Answer
512kj/mole
Explanation:
What is the work function of gold metal in kJ/mol if light with λ = 234 nm is necessary to eject electrons?
The energy can be calculated using below expresion;
E = hc/λ
Where h= planks constant= 6.626 x 10^-34
c= speed of light= 3 x 10^
λ= wavelength
hc= (6.626 x 10^-34 x 3 x 10^ 8)
=
Answer:
1 Joule=0.2390057361 Calorie
789kj=789×0.2390057361×1000
=188575.5257829calorie
Explanation:
Hope u have understand
Answer:
See explanation
Explanation:
Microwaves work by flipping water molecules upside down, then right side up again, and so on at very high speeds, and the friction generates heat. Some glass or plastic isn't affected by the microwaves, so the molecules don't get flipped, and so no friction occurs and no heat is produced, leading to the dish not being heated up.
Answer:
1) bryophyte are also called amphibians of plants kingdom
2) presence of jacketed sex organ
3) they are thalloid
4) vascular tissue are absent
5) sexual reproduction is Oogamous
Nitric acid (HNO₃) is a strong acid. Hence, it completely dissociates into ions as H⁺ and NO₃⁻ in water.
The balanced equation is;
HNO₃(aq) →H⁺(aq) + NO₃⁻(aq)
The stoichiometric ration between HNO₃(aq) and H⁺(aq) is 1 : 1
Hence, the [H⁺] = <span>3.76 x 10</span>⁻²<span> M</span>
