D. CuCl2 copper(2)chloride
Answer: from the hotter surface to the colder one
Explanation:
The difference between the wattage is 60-18=42W. The saving in energy over 10 hrs is 10×42=420 watt-hours=0.42kWh
Answer:
The correct answer is -
Prokaryotic unicellular -
Eubacteria - is the domain of unicellular organisms that has a prokaryotic cell
Archaebacteria - is one of the two domains of the prokaryotic organisms that are unicellular.
Eukaryotic multicellular (autotroph) -
Plantae - is the multicellular kingdom of the eukaryotic cells and as they produce their own food by photosynthesis called autotrophs.
protists - the autotrophic protists that are multicellular comes under algae, especially red algae.
Eukaryotic multicellular (heterotroph) -
Animalia - The Animalia kingdom is the kingdom of the heterotrophic eukaryotic organism that mostly has multicellular bodies. They depend on plants or other animals for their food.
Fungi - are mostly heterotrophic eukaryotic as they get their nutrient from other organisms are mostly multicellular.
Protist - some protists are heterotrophic as well.
Eukaryotic multicellular/unicellular (heterotroph/autotroph) -
Plantae
protists
Animalia
Fungi
53.14 grams of Zn
will be produced from 26.0 g of Zn and 42.0 g of HCl.
Explanation:
Balanced chemical reaction:
Zn + 2 HCl ⇒ Zn
+ 
data given:
mass of Zn = 26 grams
mass of HCl = 42 grams
mass of Zn
= ?
here in the reaction Zn is the limiting reagent so mass of
Zn
formed will be determined by it.
atomic mass of zinc =65.38 grams/mole
number of moles = 
putting the values in the above equation:
number of moles of zinc = 
number of moles of zinc = 0.39 moles
From the balanced reaction it is seen that
1 mole of Zn produced 1 mole of Zn
0.39 moles will produce x moles of Zn
0.39 moles of Zn
(atomic mass of Zn = 65.38 grams/mole)
mass = atomic mass x number of moles
= 0.39 x 136.28
= 53.14 grams
53.14 grams of Zn
is formed