Answer:
According to IUPAC(international union of pure and applied chemistry)
Explanation:
there are four upcoming new element they are
.nihonium
.mascovium
.tennessine
.oganesson
The visual or mathematical representation of an object system or concept is known as a model. Hope this helps and mark as brainliest!
<span>Answer:
Enthalpy Change = (6 x -393.5) + (7 x -285.8) - (-204.6) + (19/2) 0.....???
like.. (6 x Enth CO2) + ( 7 x Enth H2O) - (Enth C6H14) + (19/2) Enth O2</span>
VOLUME= 5cm*10cm*2cm =100cm^3
but density of iron=7.874g/cm^3
mass=7.874g*100 =787.4g
mass of that block = 787.4g