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vovangra [49]
3 years ago
10

to balance a chemical equation, only the subscript of reactant and product can be changed. true or false

Chemistry
1 answer:
Lostsunrise [7]3 years ago
6 0

Answer:

False

Explanation:

:)

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Double indemnity protection provides
SpyIntel [72]
Double indemnity protection provides double benefits if death is the result of an accident.

the answer is d)
4 0
3 years ago
A body of knowledge must be _____ in order to be considered science.
Law Incorporation [45]
The correct answer is realistic and reliable
5 0
3 years ago
Which statement best describes a chemical reaction?
ziro4ka [17]

Answer:

In a chemical reaction, one or more substances called reactants are combined or  broken down to form products.

Explanation:

Chemical reaction:

In a chemical reaction one or more substance converted into the another substance.

The substances that reacts or combine during the chemical reaction are called reactants while the new species formed as a result of chemical reaction are products.

There are different types of reaction given below:

Decomposition reaction:

It is the reaction in which one reactant is break down into two or more product.

AB → A + B

Synthesis reaction:

It is the reaction in which two or more simple substance react to give one or more complex product.

Single replacement:

It is the reaction in which one elements replace the other element in compound.

AB + C → AC + B

Double replacement:

It is the reaction in which two compound exchange their ions and form new compounds.

AB + CD → AC +BD

7 0
4 years ago
The splitting of carbon dioxide to form oxygen gas and carbon compounds occurs during
Oxana [17]

Answer:

neither photosynthesis nor respiration.

Explanation:

Photosynthesis is the process by which the green plants, in the presence of sunlight makes their own food. In the process carbon dioxide is absorbed and oxygen is released.

6CO_2 + 6H_2O\ (sunlight)\ \rightarrow C_6H_{12}O_6 + 6O_2

Respiration is the intake of oxygen and the metabolism of the glucose in which it is breakdown and releases carbon dioxide.

C_6 H_{12}O_6 + 6O_2\rightarrow 6CO_2 + 6H_2O + ATP

In neither of the two processes, carbon dioxide is splitted.

5 0
3 years ago
A gas that has a volume of 28 liters, a temperature of 45 °C, and an unknown pressure has its volume increased
allochka39001 [22]

Answer:

2.5 atm

Explanation:

V1 = 28L

T1 = 45°C = (45 + 273.15)K = 318.15K

V2 = 34L

T2 = 35°C = (35 + 273.15)K = 308.15k

P2 = 2.0atm

P1 = ?

From general gas equation,

(P1 × V1) / T1 = (P2 × V2) / T2

P2 × V2 × T1 = P1 × V1 × T2

P1 = (P2 × V2 × T1) / (V1 × T2)

P1 = (2.0 × 34 × 318.15) / (28 × 308.15)

P1 = 21634.5 / 8628.2

P1 = 2.5 atm

The initial pressure of the gas is 2.5atm

5 0
3 years ago
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