All categories

3 years ago

Which type of matter is composed or two or more elements that are chemically combined in a fixed proportion?

1 answer:

6 0

Hello.

When dealing with two or more elements in a fixed proportion, your answer is going to be "B.) Compound." The explanation is pretty basic when you narrow it down - think of it like the English version of a compound sentence; there are two independent clauses that have related ideas (such as this one, for example).

Let's use an example of a compound element, such as $H_{2}O$ , or Water.
This is a compound element that is composed of the two elements "Hydrogen" and "Oxygen" - for every 2 Hydrogen atoms there is one Oxygen atom.

I hope this helps!

You might be interested in

Write the equilibrium constant expression for the following reaction in terms of concentrations of the components. (Concentratio

timofeeve [1]

<u>Answer:</u> The expression for equilibrium constant in terms of concentration is $K_c=[CO_2]$

<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 coefficients. It is represented by $K_{c}$

For a general chemical reaction:

$aA+bB\rightarrow cC+dD$

The $K_{c}$ is written as:

$K_{c}=\frac{[C]^c[D]^d}{[A]^a[B]^b}$

The concentration of pure solids and pure liquids are taken as 1.

For the given chemical reaction:

$MgCO_3(s)\rightarrow MgO(s)+CO_2(g)$

The expression for $K_{c}$ is:

$K_{c}=\frac{[MgO][CO_2]}{[MgCO_3]}$

In the above expression, magnesium oxide and magnesium carbonate will not appear because they are present in solid state.

So, the expression for $K_c$ becomes:

$K_{c}=[CO_2]$

Hence, the equilibrium constant for the reaction is given above.

4 0

3 years ago

When matter changes from a solid to a liquid, the process is called __________

Anna [14]

Answer: melting

Explanation:

The process in which a solid changes to a liquid is called melting. The melting point is the temperature at which a solid changes to a liquid. For a given type of matter, the melting point is the same as the freezing point.

6 0

3 years ago

An MSDS is a document that

Georgia [21]

Answer:

The corect answer is d. all of the above. The complete explanation is given below.

Explanation:

A Material Safety Data Sheet (MSDS) is a document with a description about potential hazards (health, environment, reactivity, etc.), physical properties, how to storage and how to manipulate and work safely with a given chemical product or substance. These kind of documents are standarized to a correct interpretation of final user. When someone purchased a chemical, chemical supply companies must provide the respective MSDS. However this kind of label are not legally required to be accurate.

3 0

3 years ago

Which metal was more reactive in water? How do you know?

Rom4ik [11]

Answer:

alkali metals

Explanation:

they all react vigorously or even explosively with cold water, resulting in the displacement of hydrogen.

6 0

3 years ago

Read 2 more answers

How many moles are consumed ^

harkovskaia [24]

0000000000000000000000000000

3 0

4 years ago