MY answer would be C knowing what your income is
sorry if im wrong if i am i guess it would be D
Out of the options given above, the statement that is true is this: YOU ARE EXPOSED TO NUCLEAR RADIATION EVERYDAY.
Man is naturally surrounded by many natural and artificial radioactive sources which give out radiations on a daily basis. Although most people believe that the natural radiation are at levels that are not dangerous, scientific studies had found out that this is not true; some of the radiations are given out at the rate that are harmful to humans.<span />
Answer:
1/8
Explanation:
From;
Nt/No = (1/2)^t/t1/2
N= amount of dimethylether present at time t
No= amount of diethylether present at time t=0
t= time taken for N molecules of diethylether to remain = 4710 seconds
t1/2 = half-life of diethylether = 1570 seconds
Substituting values;
Nt/No = (1/2)^4710/1570
Nt/No = (1/2)^3
Nt/No= 1/8
Hence after 4710 seconds only 1/8 molecules of dimethylether will remain
Answer:
3 Cu²⁺(aq) + 2 PO₄³⁻(aq) ⇒ Cu₃(PO₄)₂(s)
Explanation:
Let's consider the molecular equation between aqueous copper(II) chloride and aqueous sodium phosphate.
3 CuCl₂(aq) + 2 Na₃PO₄(aq) ⇒ 6 NaCl(aq) + Cu₃(PO₄)₂(s)
The complete ionic equation includes all the ions and insoluble species.
3 Cu²⁺(aq) + 6 Cl⁻(aq) + 6 Na⁺(aq) + 2 PO₄³⁻(aq) ⇒ 6 Na⁺(aq) + 6 Cl⁻(aq) + Cu₃(PO₄)₂(s)
The net ionic equation includes only the ions that participate in the reaction (not spectator ions) and insoluble species.
3 Cu²⁺(aq) + 2 PO₄³⁻(aq) ⇒ Cu₃(PO₄)₂(s)