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Novosadov [1.4K]
4 years ago
8

In order for a scientific theory to be developed, it is examined and re-examined through experiments and scientific argumentatio

n. This process makes the scientific theory
Chemistry
1 answer:
Shalnov [3]4 years ago
3 0
Answer : The scientific theory is considered to be the foundation of many science experiments because it has well supported theory related reproducible data of test table, experiments,etc. which are usually valid and is of great help in predicting reactions.

Also these scientific theories are considered to be robust, durable and can be changed as and when required; because of its flexibility in accepting a modification/change or addition to the previous theory. All of these reasons contribute to develop scientific theories into a stronger and longer durable one. 
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What would the products of a double-replacement reaction between ca3n2 and al2o3 be?
djyliett [7]
The equation for the reaction between Ca3N2 and Al2O3 wiil be; 
  Al2O3 + Ca3N2 = 2AIN +3CaO
Thus, the products of the reaction will be Aluminium Nitride and Burnt lime(Calcium oxide). A double displacement reaction, also known as a double replacement reaction or metathesis, is a reaction where two compounds react, and the positive ions and the anions switch places, forming two new compounds or products.
7 0
3 years ago
What is the enthalpy of reaction for the
Stells [14]

Answer: -67.68

Explanation:

3 0
3 years ago
Read 2 more answers
Một hỗn hợp X gồm CH3OH; C2H5OH; phenol có khối lượng 28,9 gam phản ứng vừa hết với 100ml dung dịch NaOH 2M. Phần trăm theo khối
inn [45]

Answer: bạn viết phương trình Phenol + NaOH

=> nNaOH = nPhenol = 0,2 mol

m Phenol = 0,2x94 = 18,8 gam

%mPhenol = 18,8/28,9% = 65,05

Explanation:

5 0
3 years ago
Calculate AGrxn for this equation, rounding your
Agata [3.3K]

Answer: \Delta G_{rxn}=130.19J

Explanation:

The balanced chemical reaction is,

CaCO_3(s)\rightarrow CaO(s)+CO_2(g)

The expression for Gibbs free energy change is,

\Delta G_{rxn}=\sum [n\times \Delta G_(product)]-\sum [n\times \Delta G_(reactant)]

\Delta G_{rxn}=[(n_{CO_2}\times \Delta G_{CO_2})+(n_{CaO}\times \Delta G_{CaO})]-[(n_{CaCO_3}\times \Delta G_{CaCO_3})]

where,

n = number of moles

Now put all the given values in this expression, we get

\Delta G_{rxn}=[(1\times -394.4)+(1\times -604.17)]-[(1\times -1128.76)]

\Delta G_{rxn}=130.19J

Therefore, the gibbs free energy for this reaction is, +130.19 kJ

4 0
3 years ago
A wave is known to have a frequency of 20 Hz, wavelength of 0.5 m, and amplitude of 1.2 m. If the amplitude of the wave is doubl
Komok [63]
The wave will have a frequency that is larger
3 0
3 years ago
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