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Hatshy [7]
2 years ago
8

What is the difference between chemical and physical change with respect

Chemistry
2 answers:
kozerog [31]2 years ago
5 0

Answer:

Physical changes are changes that do not alter the identity of a substance. Chemical changes are changes that occur when one substance is turned into another substance.

Explanation:

zzz [600]2 years ago
5 0
Physical done change the identity and chemical change changes the identity of that object
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Write the chemical equations for each of the reactions described below:
Cerrena [4.2K]

Answer:

BeCl2 + 2AgNO3 ---> Be(NO3)2 + 2AgCl

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2 years ago
A typical refrigerator is kept at 4˚C, and a soda can has a pressure of
ss7ja [257]

Answer: The new pressure will be 1.42 atm

Explanation:

To calculate the final pressure of the system, we use the equation given by Gay-Lussac Law. This law states that pressure of the gas is directly proportional to the temperature of the gas at constant pressure.

Mathematically,

\frac{P_1}{T_1}=\frac{P_2}{T_2}

where,

P_1\text{ and }T_1 are the initial pressure and temperature of the gas.

P_2\text{ and }T_2 are the final pressure and temperature of the gas.

We are given:

P_1=1.18atm\\T_1=4^0C=(4+273)K=277K\\P_2=?\\T_2=60^0C=(60+273)K=333K

Putting values in above equation, we get:

\frac{1.18}{277}=\frac{P_2}{333}\\\\P_2=1.42

Hence, the new pressure will be 1.42 atm

7 0
2 years ago
Which molecule is nonpolar?<br> (1) H2O (3) CO<br> (2) NH3 (4) CO2
bija089 [108]
The molecule that is nonpolar is CO2
6 0
3 years ago
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Consider the reaction H2(g) + I2(g) Double headed arrow. HI(g) with an equilibrium constant of 46.3 and a reaction quotient of 5
Alika [10]

Answer:

The reaction shifts to the left.

Explanation:

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The relationship between Q and K with their implications are given as;

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K > Q (Reaction shifts to the right)

K < Q (Reaction shifts to the left)

Since in this question, Q (525) > K (46.3)

The reaction shifts to the left.

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2 years ago
Balance equation P2O5 + H20 - - - - &gt; H3PO4<br> Help me.....
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Answer:

Search by reactants (P 2O 5, H 2O) and by products (H 3PO 4)

H2O + P2O5 → H3PO4

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8 0
3 years ago
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