1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
vekshin1
3 years ago
13

♡

Chemistry
1 answer:
Oksi-84 [34.3K]3 years ago
4 0

Your question has been heard loud and clear.

Both scientific laws and scientific theories are not based on hypothesis.

Because , scientific laws are proven and so they are real not hypothetical.

Whereas scientifc theories can be hypothetical.

Thank you

You might be interested in
For the reaction2 C4H10 (g) + 13 O2 (g) → 8 CO2 (g) + 10 H2O (g)ΔH° is -125 kJ/mol and ΔS° is +253 J/K ∙ mol. This reaction is _
ivanzaharov [21]

Answer:

C. spontaneous at all temperatures

Explanation:

The spontaneity of  reaction is determined by the sign of the  gibbs free energy.

A negative sign denotes that the reaction is spontaneous, positive sign means the reaction is not spontaneous.

From the question;

ΔS° = +253 J/K

ΔH° = -125 kJ/mol

ΔG = ΔH°  - TΔS°

From the data given, the condition in which we can obtain a negative value of G, is at any value of T.

For any value of T, G would always be a negative value.

This means the correct option is option C.

3 0
3 years ago
A chemistry student adds a quantity of an unknown solid compound X to 5.00 L of distilled water at 15.° C . After 10 minutes of
Yuliya22 [10]

Answer:

34 g/100 mL

Explanation:

The solubility of a compound can be expressed in g/100mL, for this we must divide the mass of the compound that dissolves in the solute by the volume of the solvent.

The solvent, in this case, is water, and that mass of the solute X that dissolved is the mass that was recovered after the solvent was drained and evaporated. So the solubility of X (S) is:

S = 0.17 kg/5L

S = 170g/5000mL

S = 170g/(5*1000)mL

S = 34 g/100 mL

8 0
2 years ago
Describe what you can do to reduce non-point source water pollution. List at least 3 specific actions, or, write 3 sentences abo
vovangra [49]
Grass planting, laying of straw , putting up sediment fenced or knee high black fabric fences can help reduce no point source water pollution
4 0
3 years ago
Explain why smell is a physical property?
lawyer [7]

Answer:

because no chemical change is happening

Explanation:

5 0
3 years ago
A certain metal M forms a soluble sulfate salt MSO, Suppose the left half cell of a galvanic cell apparatus is filled with a 3.0
dimaraw [331]

Explanation:

It is known that for high concentration of M^{2+}, reduction will take place. As, cathode has a positive charge and it will be placed on left hand side.

Now, E^{o}_{cell} = 0 and the general reaction equation is as follows.

         M^{2+} + M \rightarrow M + M^{2+}

                3.00 M        n = 2       30 mM

         E = 0 - \frac{0.0591}{2} log \frac{50 \times 10^{-3}}{1}

            = -\frac{0.0591}{2} log (5 \times 10^{-2})

            = 0.038 V

Therefore, we can conclude that voltage shown by the voltmeter is 0.038 V.

5 0
3 years ago
Other questions:
  • The mass of a toy spoon is 7.5 grams, and its volume is 3.2 ml. What is the density of the toy spoon?
    9·2 answers
  • A solution of CuSo, is labelled 1.743 M. How much Cuso, in grams, must be used to make
    8·2 answers
  • What is the new item that is formed after a chemical reaction called
    9·1 answer
  • Which of the following pairs does not share the same empirical formula?
    7·2 answers
  • 4. What is the molar mass of CuSO4?
    13·2 answers
  • Which of these statements supports the idea that digital recording of audio is more reliable than analog recording?
    5·1 answer
  • Which two have to do with Movement of Galaxies? (pick 2)
    11·1 answer
  • Gizmo Student Exploration: Periodic Trends<br> Does anyone have the answer key?
    13·1 answer
  • At the carnival, a baby was given a helium balloon whose
    11·1 answer
  • 23.<br> What would happen to the substance in the jar if energy was added?
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!