Answer:
the atom has equal protons and electrons so it should by without charge
I think this is the correct answer
hope this will help you ❤️
<span>Answer: 5.32 x 10⁻³ M
Explanation:
1) The rate law for a first order reaction is:
</span><span />
<span>r = - d [A] / dt = k[A]
</span><span />
<span>2) When you integrate you get:
</span><span />
<span> [ A] = Ao x e ^(-kt)
</span><span />
Remember that here A is PH₃
<span>3) Plug in the data: Ao = 0.0316M, k = 0.0180 /s, and t = 99s
</span><span />
<span>[PH₃] = 0.0316 M x e ^( - 0.0180/s x 99s) = 5.32 x 10⁻³ M</span>
Answer:
1.26 x 10⁸pm³ and 1.26 x 10⁻²²cm³
Explanation: Calculating for a body centered cubic lattice, the formula is
3d²= 16r²
where d = edge length of unit cell
r=radius of atom
3d²= 16 x (217)²
3d²=753424
d²=251141.3
d= 501.1pm
volume of unit cell= d³= (501.1)³= 1.26 x 10⁸pm³
converting to cm³= 1.26 x 10⁸(10⁻¹²m)³
=1.26 x 10⁸(10⁻¹⁰cm)³ = 1.26 x 10⁻²²cm³