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4 years ago

When two or more substances blend but do not chemically combine it is a _____________.

Chemistry

1 answer:

Oksi-84 [34.3K]4 years ago

6 0

Answer:

Mixture.

Explanation:

Hello,

In this case, when blending we are continuously sliding the substances until we obtain small particles that when do not chemically but physically combine we say they are forming a mixture. Nevertheless, when they chemically combine they form a chemical compound due to the formation of bonds between them.

Regards.

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3 years ago

If 10g of sodium react with an unlimited amount of chlorine how much sodium chloride will get produced?

puteri [66]

Answer: Amount of sodium chloride produced is 25.43 grams.

Explanation:

To calculate the moles:

$\text{Number of moles}=\frac{\text{Given mass}}{\textMolar mass}}$

Given: Mass of sodium = 10 g

Molar mass of sodium = 23g/mol

$\text{Moles of sodium}=\frac{10g}{23g/mol}=0.4347mol$

The balanced equation is:

$2Na+Cl_2\rightarrow 2NaCl$

By Stoichiometry of the reaction,

2 moles of sodium produces 2 moles of sodium chloride

So, 0.4347 moles of sodium will produce = $\frac{2}{2}\times 0.4347=0.4347mol$ of sodium chloride.

Molar mass of sodium chloride = 58.5 g/mol

Putting values in equation 1, we get:

$0.4347mol=\frac{\text{Mass of NaCl}}{58.5g/mol}=25.43g$

Hence, amount of sodium chloride produced is 25.43 grams.

5 0

3 years ago

Write the equilibrium constant expression Kc for the following reaction.2H20(g) ---------> O2(g) + 2H2(g) <---------Do not

Komok [63]

Answer:

$K_c\text{ = }\frac{[O_2][H_2]\placeholder{⬚}^2}{[H_2O]\placeholder{⬚}^2}$

Explanation:

Here, we want to write the equilibrium constant expression

To write this, we raise the concentrations of the reactants and products to the coefficient before them. These concentrations are represented by square brackets in which the chemical formula of the compound is placed

We place the representation of the products over that of the reactants

We have the expression written as follows: