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Leona [35]
2 years ago
6

A student predicts that a solution of ethanol (C2H5OH) and water will have a lower density at room temperature than that of pure

water. Which tools would most help the student test this prediction?
Will give brainly
Chemistry
2 answers:
ohaa [14]2 years ago
4 0

Answer:

It would probably be, something that can take up moisture to test it.

Explanation:

(to see if it can evaporate)

Lubov Fominskaja [6]2 years ago
3 0
It could probably be something that could take moisture to test it
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This map shows the ages of the Atlantic oceanic crust
tamaranim1 [39]
No
Of course not cause it will only locate where the ocean is , it will not show the age.
4 0
2 years ago
When combining acids and water, water should always be added to the acid. True or False?
scoundrel [369]

Answer:

False

Explanation:

Always add acid to the water, it dilutes the acid the other way around.

8 0
2 years ago
What might a physicit choose to study?
AlekseyPX
Thermodynamics, Nuclear Physics, Quantum Physics, Astronomy and Astrophysics
7 0
3 years ago
If the reaction N2 (g) + 3 H2 (g) --> 2 NH3 (g) has the concentrations 1.1 M for nitrogen, 0.75 M for hydrogen and 0.25 M fo
Luba_88 [7]

<u>Answer:</u> The value of K_c is 0.136 and is reactant favored.

<u>Explanation:</u>

Equilibrium constant in terms of concentration is defined as the ratio of concentration of products to the concentration of reactants each raised to the power their stoichiometric ratios. It is expressed as K_{c}

For the chemical reaction between carbon monoxide and hydrogen follows the equation:

N_2(g)+3H_2(g)\rightleftharpoons 2NH_3(g)

The expression for the K_{c} is given as:

K_{c}=\frac{[NH_3]^2}{[N_2][H_2]^3}

We are given:

[NH_3]=0.25M

[H_2]=0.75M

[N_2]=1.1M

Putting values in above equation, we get:

K_c=\frac{(0.25)^2}{1.1\times (0.75)^3}

K_c=0.135

There are 3 conditions:

  • When K_{c}>1; the reaction is product favored.
  • When K_{c}; the reaction is reactant favored.
  • When K_{c}=1; the reaction is in equilibrium.

For the given reaction, the value of K_c is less than 1. Thus, the reaction is reactant favored.

Hence, the value of K_c is 0.136 and is reactant favored.

4 0
3 years ago
U HUCUS 13 HUU
mario62 [17]

Answer:

The correct answer is a the central core and is composed of protons and neutrons.

Explanation:

Nucleus is present in the center of an atom.Nucleus contain positively charged particle proton along with neutron which is neutral.

      Due to the the presence of protons nucleus contain positive(+ve) charge.

4 0
2 years ago
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