Answer:
The reaction is exothermic and ΔH is negative
Explanation:
An exothermic reaction is a chemical reaction that releases energy in the form of heat. It is the opposite of an endothermic reaction in which energy is absorbed. It is expressed in a general thermochemical equation: reactants → products + energy.
We can know that a reaction is exothermic by observing the calorimeter to know if there is an increase in temperature. Remember that an exothermic reaction leads to evolution of heat. This is observed physically as a rise in temperature.
The calorimeter initially read 21.0 and finally read 38.8 at the end of the reaction. This implies that heat was given out in the process. The reaction is exothermic and ∆H is negative.
Okay so just add all of them up the fine the x and the y and d the times that by the size of yiurn four head
In balancing reactions, it is important to remember that each of the side in the reaction should have the same number of elements. We do as follows:
<span>2SO2(g) + O2(g) -> 2SO3(g)
H2S(g) + 3/2O2(g) -> SO2(g) + H2O(g)
Hope this answers the question. Have a nice day.</span>
Answer:
If the amount of magnification is correct, then an individual germ can be seen, because individual germs exist but are too small for human eyes.
Explanation:
<em>Leeuwenhoek was the first scientists to experiment with microorganisms using a self-designed single-lens microscope. He described the tiny organisms as 'animacules'. He is known for his pioneer work in the design of the first microscope.</em>
The microscope works by magnifying objects placed on the stage. Germs are microbes that cannot be seen with ordinary eye unless they are magnified appropriately. They are virtually everywhere, including the parts of the world where humans cannot survive.
Hence, the only correct option which most likely inspired Leeuwenhoek's experimentation with technology is the first option. The remaining options are deficient in some ways.
