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Artyom0805 [142]
3 years ago
5

Answer the following questions a. Define atom and molecules​

Chemistry
1 answer:
Cloud [144]3 years ago
7 0

Answer:

Molecules are neutral particles made of two or more atoms bonded together.

Atoms are single neutral particles.

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which term is used when sugar is completely dissolved in water                                                                 
GaryK [48]
The term which is used is homogeneous.
when sugar is completely dissolved in the water, the mixture or solution homogeneous, both in same phase and same uniform texture that is liquid.
There two types of mixtures are heterogeneous and homogeneous in different phases.
If sugar is not completely dissolved in water and you see the crystals of sugar in water, then the solution will be heterogeneous.
3 0
4 years ago
After you design your model, build your homes and place them in the same positions as they were in task 1. Build any additional
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3 0
3 years ago
The enthalpy of formation of CO2 at 25oC is -393.51 kJ/mol. What is the enthalpy of formation at 500 oC?
Kisachek [45]

Answer:

-375.9_KJ/(mol)

Explanation:

H(T2 ) ≈ H(T1)+CPΔT

Specific heat of Carbon is 0.71 J/g K.

At 283.15 the heat capacity is 37.12 J/(mol*K)

Kirchhoff's law

H(T2 ) ≈ H(T1)+CPΔT

Where

H(T1) and H(T2 ) are the heat of formation of CO2 at temperatures T1 and T2

CP is the heat capacity

Thus we have and ΔT is the temperature change

H(T2 ) ≈ -393.51×10^3+CP×(500-25)

= -393.51×10^3+37.12×(500-25)

= -375878 J/(mol)

= -375.9KJ/(mol)

6 0
3 years ago
According to the law of conversion of the number of atoms in the products of A chemical reaction must be balanced with the numbe
ASHA 777 [7]

Answer:

The number of atoms in the reactants must be  equal to the number of atoms in the products.

Explanation:

Atoms cannot be destroyed in a chemical reaction.

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