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Firlakuza [10]
3 years ago
14

Question 10

Chemistry
1 answer:
zepelin [54]3 years ago
3 0
Because the ring is hollow
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EXPLAIN How did energy change form in the calorimeter lab?
timama [110]

Answer:

Chemical energy is converted into thermal and mechanical energy while kinetic energy into potential energy.

Explanation:

As the breakdown of food started, the chemical energy present in the food substances converted into thermal energy and mechanical energy. Thermal or heat energy is used to maintain the body's temperature while mechanical energy is used in other activities such as movement of muscles. Kinetic energy is also converted into potential energy when the object moves from top of a place such as hill.

7 0
3 years ago
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A student placed a small chip of limestone into a hydrochloric acid solution, and carbon dioxide gas was released. The carbon di
Phoenix [80]

Physical and chemical changes are reversible and nonreversible changes. The release of carbon dioxide gas indicates a chemical change.

<h3>What is a chemical change?</h3>

A chemical change is a change in which a new substance is produced when the reactants react in the reaction mixture. The chemical produced cannot be reversed back to the reactants and hence, it is nonreversible.

The release of carbon dioxide is a chemical change as limestone and hydrochloric acid react with each other chemically and as a result, a new substance was formed.

Therefore, the production of carbon dioxide indicates a chemical change.

Learn more about chemical change here:

brainly.com/question/23693316

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5 0
2 years ago
WILLL GIVE BRAINLIEST IF YOU ANSWERRR PLEASEEEE IM LITERALLY BEGGING YOU I PUT THIS QUESTION IN SOO MANY TIMES I HAVEN'T GOTTEN
tino4ka555 [31]

Answer:

The answer is 375.54 g of AgBr

Explanation:

Mass (g) = Concentration (mol/L) x volume (L) x Molecular Weight of AgBr (g/mol)

Mass = 2M x 1L x 187.77 g/mol

Mass = 375.54g

6 0
2 years ago
A potential energy diagram is shown. What is the total change in enthalpy of this reaction? 25 kJ 30 kJ 35 kJ 55 kJ
Kazeer [188]

Answer : The total change in enthalpy of this reaction is 25 kJ.

Explanation :

Enthalpy of reaction : It is defined as the changes in heat energy takes place when reactants go to products. It is denotes as .

ΔH = Energy of product - Energy of reactant

ΔH is positive when heat is absorbed and the reaction is endothermic.

ΔH is negative when heat is released and the reaction is exothermic.

In the given potential energy diagram, the energy of product at higher level and energy of reactant at lower level. The ΔH for this reaction will be positive.

Given:

Energy of product = 55 kJ

Energy of reactant = 30 kJ

ΔH = Energy of product - Energy of reactant

ΔH = 55 kJ - 30 kJ

ΔH = 25 kJ

Thus, the total change in enthalpy of this reaction is 25 kJ.

5 0
3 years ago
¿¿¿Alguien sabe que sustancias no concuerdan con el modelo de Arrhenius??? Es urgente, ayuden por favor
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Twjegnefnwfnnegengefbefb no se
8 0
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