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Amanda [17]
3 years ago
8

Which of the following describes an endothermic reaction?

Chemistry
2 answers:
Karolina [17]3 years ago
4 0
During endothermic reaction, thermal energy is absorb by the system from the surrounding. The correct option is C.
Svet_ta [14]3 years ago
4 0

Answer: Option (c) is the correct answer.

Explanation:

When energy is absorbed by a system or reactants then the reaction is known as endothermic in nature. In this type of reaction, energy of reactants is less than the energy of energy of products.

Whereas when energy is released by a system or reactant then then the reaction is known as exothermic in nature. In this type of reaction, energy of reactants is more than the energy of products.

Thus, we can conclude that the statement thermal energy is absorbed by the system, best describes an endothermic reaction.

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The weight of the body decrease inside water why?​
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Penurunan atau kehilangan massa otot bisa menimbulkan penurunan berat badan yang tidak direncanakan

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3 years ago
How many grams of tris (mw 121.1) would you need to prepare 100 ml of a 100 mm tris solution? _________ grams?
Tems11 [23]

Molarity = (Mass/ molar mass) x (1/ volume of solution in Litres)

Mass = Molarity x molar mass x  volume of solution in Litres

Molarity of Tris = 100 mM = 0.1 M

volume of Tris sol. = 100 mL = 0.1 L

molar mass of Tris = 121.1 g/mol

Hence,

mass of Tris = Molarity of Tris x molar mass ofTris x volume of Tris solution

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7 0
3 years ago
2. You work for an environmental company as an environmental toxicologist and have been hired to determine the contaminant prese
Lena [83]

Answer:

Explanation:

2. You work for an environmental company as an environmental toxicologist and have been hired to determine the contaminant present in a local resident’s pool. Create a flow chart outlining how you would detect the possible presence of Fe2+ and/or Sr2+

7 0
2 years ago
Consider a pot of water at 100 C. If it took 1,048,815 J of energy to vaporize the water and heat it to 135 C, how many grams of
jeka57 [31]

Answer:

There was 450.068g of water in the pot.

Explanation:

Latent heat of vaporisation = 2260 kJ/kg = 2260 J/g = L

Specific Heat of Steam = 2.010 kJ/kg C = 2.010 J/g = s

Let m = x g be the weight of water in the pot.

Energy required to vaporise water = mL = 2260x

Energy required to raise the temperature of water from 100 C to 135 C = msΔT = 70.35x

Total energy required = 2260x+x\times2.010\times(135-100)=2260x+70.35x=2330.35x

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Hence, there was 450.068g of water in the pot.

8 0
3 years ago
Which species is the reducing agent in a redox reaction? Chem is hard​
Mandarinka [93]

Answer:

<h2>The species that furnishes the electrons is called the reducing agent. In this case, the reducing agent is zinc metal.</h2>

Explanation:

<h2>Hopes this helps. Mark as brainlest plz!</h2>
6 0
3 years ago
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