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3 years ago

Why do we perform an experiment?

Chemistry

2 answers:

Nesterboy [21]3 years ago

7 0

Answer:

Explanation:

One of its important roles is to test theories and to provide the basis for scientific knowledge that we need to know. How are we supposed to know the answer to our question if we don't perform the experiment to test our question.

7nadin3 [17]3 years ago

6 0

Answer:

Experiment plays many roles in science. One of its important roles is to test theories and to provide the basis for scientific knowledge. It can also call for a new theory, either by showing that an accepted theory is incorrect, or by exhibiting a new phenomenon that is in need of explanation.

Explanation:

You might be interested in

What is the percent of nitrogen (N) by mass is a 55.0g sample of Fe(NO3)3? The molar mass of Fe(NO3)3 is 241.86g/mol.

Anna35 [415]

Answer:

22.74%

Explanation:

The mass of nitrogen is 55g

The mass of Fe(NO3)3 is 241.86g/mol

%of nitrogen= mass of nitrogen/molar mass of Fe(NO3)3 ×100

= 55/241.86×100

=5500/241.86

=22.74%

5 0

3 years ago

How are osmosis and diffusion alike?

Doss [256]

I believe your answer should be c

8 0

3 years ago

Since this reaction takes place in acidic solution, H2O(l) and H+(aq) will be involved in the reaction. Places for these species

maxonik [38]

Answer:

The balanced equation is given below:

SO4^2−(aq)+ Sn^2+(aq) + 4H^+(aq) → H2SO3(aq)+ Sn^4+(aq) + H2O(l)

The coefficients of the reactants are: 1, 1, 4

The coefficients of the products are: 1, 1, 1

Explanation:

Step 1:

The equation for the reaction. This is given below:

SO4^2−(aq)+ Sn^2+(aq) + –––→ H2SO3(aq)+ Sn^4+(aq) + –––

Step 2:

Inclusion of H+ and H2O into the equation. This is illustrated below:

SO4^2−(aq)+ Sn^2+(aq) + H^+(aq) → H2SO3(aq)+ Sn^4+(aq) + H2O(l)

Step 3:

Balancing the equation.

SO4^2−(aq)+ Sn^2+(aq) + H^+(aq) → H2SO3(aq)+ Sn^4+(aq) + H2O(l)

The above equation can be balanced as follow:

There are total 4 atoms of H on the right side and 1 atom on the left side. It can be balance by putting 4 in front of H^+ as shown below:

SO4^2−(aq)+ Sn^2+(aq) + 4H^+(aq) → H2SO3(aq)+ Sn^4+(aq) + H2O(l)

Now the equation is balanced.

The coefficients of the reactants are: 1, 1, 4

The coefficients of the products are: 1, 1, 1

5 0

3 years ago

Which of these is NOT a type of natural force? A) gravity B) friction C) throwing D) magnetism

zlopas [31]

Throwing isn't classified as a force so I'd say C but it is a force just not a type

3 0

3 years ago

Read 2 more answers

Which statement below is true?

kykrilka [37]

Answer:

a) At a given temperature, C₂H₆ has a higher vapor pressure than C₄H₁₀.

Explanation:

Which statement below is true?

a) At a given temperature, C₂H₆ has a higher vapor pressure than C₄H₁₀. TRUE. C₂H₆ has a lower molar mass than C₄H₁₀ and a higher vapor pressure at most temperatures.

b) The strongest intermolecular attractive forces present in liquid CCl₄ are dipole-dipole forces. FALSE. CCl₄ is nonpolar, so the strongest intermolecular forces are dispersion forces.

c) HCl has a higher boiling point than LiCl. FALSE. LiCl (ionic compound) has a higher boiling point than HCl (covalent compound).

d) H₂O has a greater polarizability than H₂Se. FALSE. Se has a larger atomic radius than O which is why H₂Se has a greater polarizability than H₂O.

e) In general, the stronger the intermolecular attractive forces, the lower the ∆Hºvap. FALSE. In general, the stronger the intermolecular attractive forces, the higher the ∆Hºvap.

7 0

3 years ago