A diatomic molecule has a valency of two(2) for a non metal it ,will be negatively charged whereas for a metal, it will be positively charged
Answer:
mL of NaOH required =29.9mL
Explanation:
Let us calculate the moles of vitamin C in the tablet:
The molar mass of Vitamin C is 176.14 g/mole
![moles=\frac{mass}{molarmass}=\frac{500mg}{176.14}=\frac{0.5}{176.14}=0.0028](https://tex.z-dn.net/?f=moles%3D%5Cfrac%7Bmass%7D%7Bmolarmass%7D%3D%5Cfrac%7B500mg%7D%7B176.14%7D%3D%5Cfrac%7B0.5%7D%7B176.14%7D%3D0.0028)
Thus we need same number of moles of NaOH to reach the equivalence point.
For NaOH solution:
![moles=MolarityXvolume=0.095Xvolume](https://tex.z-dn.net/?f=moles%3DMolarityXvolume%3D0.095Xvolume)
![0.00283=0.095Xvolume](https://tex.z-dn.net/?f=0.00283%3D0.095Xvolume)
![volume=0.0299L=29.9mL](https://tex.z-dn.net/?f=volume%3D0.0299L%3D29.9mL)
Answer:
0.116%
Explanation:
efficiency of sterling engine = 1 - ( 55 + 273 )k / ( 95 + 273 ) k
= 1 - ( 328 / 368 ) = 0.10869
<u>Determine how efficient the transfer of energy via flame is </u>
apply this relation ; energy of steady state / energy output ---- ( 1 )
where; <em><u>energy output</u></em> = efficiency of sterling engine * energy
= 0.10869 * 50 = 5.4345 J/sec
<em><u>energy of steady state</u></em> = 1/2 * I * w^2 ------ ( 2 )
I = moment of inertia of engine = 2 * 10^-5 kgm^2
back to equation 2 :
energy of steady state = 1/2 * ( 2 * 10^-5 ) * ( 240 * 2π / 60 )^2
= 630.88 * 10^-5 J /sec
Input values into equation 1
= [ (630.88 * 10^-5 ) / 5.4345 ] * 100
= 0.116%
Answer:
Mass of A=320g
Volume of A=64cm3
Density of B =3g/cm3
Volume of B = 27 cm3
(Not drawn to scale)
and the density of cube A =5.0g/cm3
Please mark me a brainlist