Which of the following is an exothermatic reaction a) dissolving sugar in wat b)melting ice c)oxidation of iron D) dissolvin ammonium nitrate in water to cool the water
C, oxidation of iron is the right answer because an exothermic reaction releases energy by light or heat!
What is an electric circut with two or more current paths?
A parallel circuit is an electric circuit with two or more current paths
What are Earth's four interconnected global systems?
The Earth's system can be placed into four sub- groupings- : atmosphere, biosphere, lithosphere, and hydrosphere.
Ocean, Land, Atmosphere, Life
Is a Daisy a prokaryote or a eukaryote
A daisy is a eukaryote. Because since the plant is a kingdom under the domain "Eukarya". ~Hope this helped! :)
A eukaryote. Eukaryote comes from Greek and means "real kernel"— eukaryotes have nuclei in their cells. Most complex organisms and basically all living things that you'll see with the naked eye are eukaryotes.
Chemist preformed Reaction of solid magnesium burning and found that the mass of the magnesium oxide what is greater than the mass of the magnesium. What is the reason behind this increase in math reaction of solid magnesium burning and found that the mass of the magnesium oxide what is greater than the mass of the magnesium. What is the reason behind this increase in mass?
The magnesium reacted with the oxygen in the air.
For argument’s sake, let’s say that the mass of magnesium oxide was 3 g and that of the oxide was 5 g.
The reaction was
magnesium + oxygen ⟶ magnesium oxide
Mass: 3 g 5 g
Mass of oxygen = 5 g – 3 g = 2 g
The 3 g of magnesium must have combined with 2 g of oxygen to form 5 g of magnesium oxide.
How many molecules of CBr4 are in 250 grams of CBr4
Solution:- The grams of tetrabromomethane are given and it asks to calculate the number of molecules.
It is a two step unit conversion problem. In the first step, grams are converted to moles on dividing the grams by molar mass.
In second step, the moles are converted to molecules on multiplying by Avogadro number.