All categories

3 years ago

Solutions are always formed when:

2 answers:

6 0

<span>The answer would be: a) one substance dissolves uniformly in another substance

The solution can be made from solid, liquid or even gas as long as they are dissolves uniformly in the solvent.
It's not mandatory that a solution is made from solid mixed in liquid. If a compound made that means there is a chemical reaction happens, and that is not related to the solution.</span>

JulijaS [17]3 years ago

4 0

Answer:

a.One substance dissolves uniformly in another substance.

Explanation:

Solution: It is consist of solute and solvent.

Solute is present in solution in small quantity and solvent present in large quantity in comparison to solute.

When we dissolve solute completely in the solvent then the solution is formed.

Solute and solvent can not be separated by filtration.

It is homogeneous mixture of two or more substance.

a.One substance dissolves uniformly in another substance.

It is true because when we dissolve one substance uniformly in another substance .Then substance dissolve completely and form solution.

b.liquid are mixed together

It is not true because if we mix oil and water then they will not form homogeneous mixture.

c.a compound is created.

It is not true because when a compound is formed then it is not necessary that solution is always formed.

d.Solids and liquids are mixed together

It is not true when we mix stone and water then the mixture is not homogeneous.Therefore, it is false.

You might be interested in

copper forms two oxides. On heating 1 g of each in hydrogen 0.888 g and 0.798 g of the metal was obtained. Show that the results

Mashutka [201]

Answer:

For the first oxide, 1 g gives 0.888 g of copper.

Dividing by 0.888 tells us that 1.126 g gives 1 g of copper so has 0.126 g of oxygen.

For the second oxide, 1 g gives 0.798 g of copper.

Dividing by 0.798 tells us that 1.253 g gives 1 g of copper so has 0.253 g of oxygen.

So 1 g of copper combines with either 0.126 g or 0.253 g of oxygen.

Within the limits of experimental error, 0.253 is twice 0.126, confirming the law of multiple proportion.

6 0

3 years ago

Read 2 more answers

A large change in velocity is a result of a _____ force.

Tanya [424]

Answer:

gravitation force is your answee

5 0

3 years ago

84. Predict how many electrons each element will most likely

Kruka [31]

Answer:

I will gain 1 electron

Ba will lose 2 electrons

Cs will lose 1 electron

Se will lose 2 electrons

Explanation:

5 0

3 years ago

A system contains bonds between particles. Which choice describes the microscopic structures of the energy in this system? There

borishaifa [10]

Answer:

The correct answer is: <em>There must be potential energy in the bonds due to its particles position.</em>

Explanation:

Potential energy is a kind of energy which is stored in an object due to its position or configuration. For example, if there is a ball in the fifth floor of a building, it has a determined potential energy which is converted to kinetic energy when the ball fall down. The same is in the case of the chemical bonds: the particles or atoms have potential energy related to their relative positions in the system. In fact, chemical energy is considered a form of potential energy (stored in chemical bonds).

8 0

4 years ago

Cyclopropane thermally decomposes by a first‑order reaction to form propene. If the rate constant is 9.6 s − 1 , what is the hal

DiKsa [7]

Answer:

Cyclopropane will take $0.072 secs$ to reach $0.50$ of its initial concentration.

Explanation:

For a first order kinetics half- life of the reaction can be calculated by the formula,

half-life = $\frac{0.693}{k}$

Half-life of cyclopropane will be,

$t_{1/2}= \frac{0.693}{9.6s^{-1} }$

$t_{1/2} =0.072 sec$

Since, $0.50$ means half of the initial concentration, which itself depicts the half- life of the cyclopropane. Therefore it, will take $0.072 secs$ to reach $0.50$ of its initial concentration i.e it will reduce to half of initial concentration in $0.072 secs$ when it thermally decomposes.

7 0

3 years ago