Evaporating? But that’s with a boiling liquid
Answer:
protons and neutrons located within the nucleus, with electrons in orbitals surrounding the nucleus.
Answer:
NaCl or sodium chloride, is commonly known as table salt. ... Subscripts show the ratio of atoms of different elements in the compound. Since there are four hydrogen atoms in the molecule, the subscript 4 follows the symbol for hydrogen.
Explanation:
Answer:
d. 1600 calories
Explanation:
The heat of fusion of water, L, is the amount of heat per gram required to melt the ice to water, a process which takes place at a constant temperature of 0 °C. The specific heat of water, c, is the amount of heat required to change the temperature of 1 gram of water by 1 degree Celsius.
We will convert the units of c from Jg⁻¹°C⁻¹ to cal·g⁻¹°C⁻¹ since the answers are provided in calories. The conversion factor is 4.18 J/cal.
(4.18 Jg⁻¹°C⁻¹)(cal/4.18J) = 1 cal·g⁻¹°C⁻¹
First we calculate the heat required to melt the ice, where M is the mass:
Q = ML = (15 g)(80 cal/g) = 1200 cal
Then, we calculate the heat required to raise the temperature of water from 0 °C to 25 °C.
Q = mcΔt = (15 g)(1 cal·g⁻¹°C⁻¹)(25 °C - 0 °C) = 380 cal
The answer is rounded so that there are two significant figures
The total heat required for this process is (1200 cal + 380 cal) = 1580 cal
The rounded answer is 1600 calories.
Measure reactants precisely.
Stir to help the reaction take place.
Wait patiently until the reaction completes.
Make sure to recover as much copper as possible.
Explanation:
Anything that increases the rate of this reaction will improve the yield of copper production.
The rate of reaction is usually a factor of how the concentration of reactants and products changes with time.
Some of the factors that affects the rate of a reaction are:
- Nature of reactants
- concentration or pressure if gases
- temperature
- presence of catalysts
- degree of mixing
In this reaction:
- to ensure we have the maximum amount of copper produced, measure out the exact/accurate amount of reactants stated
- make sure you stir the reactants to ensure they mix and combine.
- ensure you are not too much in haste. Wait for the reaction to go into completion.
- recover as much copper as possible
learn more:
Chemical reaction brainly.com/question/6281756
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