(a) 841 lb/in; (b) 89.36 cm
(a) 1220 lb/1.45 in = 841 lb/in
(b) To quadruple a measurement is to <em>multiply it by 4</em>.
∴ 4 × 22.34 cm = 89.36 cm
<span>the type of solid of the candle wax is amorphous.
as the amorphous is doesn't melt at a certain temperature . and it is amorphous because it gets softer and softer and it doesn't melt at a certain temperature. so the wax shape change and being softer and when it re-cooled its shape will become harder again, without melting at distinct temperature.</span>
Answer:
1.09 x 10²⁴ atoms Na
Explanation:
In one mole of NaCl, there is also one mole of Na. To convert between moles and atoms, you need to use Avogadro's number. When writing the conversion, the desired unit (atoms) should be placed in the numerator to allow for the cancellation of units (moles). The final answer should have 3 sig figs to match the given number (1.81 mole).
Avogadro's Number:
6.022 x 10²³ atoms = 1 mole
1.81 moles Na 6.022 x 10²³ atoms
--------------------- x -------------------------------- = 1.09 x 10²⁴ atoms Na
1 mole
Chlorine= 35.5 +35.3= 71 a.m.u.
Answer:
1.AD
2.BC
Explanation:
For aluminum phosphate AlPO4 (s) <------> Al^3+(aq) + PO4^3-(aq)
Ksp= [Al^3+] [PO4^3-]
For magnesium hydroxide
Mg(OH)2(s) <--------> Mg^2+(aq) +. 2OH^-(aq)
Ksp= [Mg2+] [2OH^-]^2
For
