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4 years ago

Which elements have more metallic character the no-metals or the metals ones?

Chemistry

1 answer:

Sidana [21]4 years ago

3 0

Answer:

The metallic elements have more metallic characteristcis.

Explanation:

Metallic character is the name given to a set of common properties shared by the metallic elements.

Metallic luster, high density, high electric and thermal conductivity are some physical properties associated with metallic characters.

Malleability and ductility is also an important metallic characteristic.

Generally the metals are hard and dense.

The elements on the left hand side of the periodic table show metallic characteristics except hydrogen.

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Given the following reaction: 2N2O5=2N2O4+O2, if the rate of oxygen production is 0.15M/min, determine:

astraxan [27]

Answer:

a. $r_{N_2O_5}=-0.075M/min$

b. $r_{N_2O_4}=0.075M/min$

Explanation:

Hello.

In this case, according to the balanced chemical reaction, we can write the law of rate proportions:

$\frac{r_{N_2O_5}}{-2} =\frac{r_{N_2O_4}}{2} =\frac{r_{O_2}}{1}$

Thus, we proceed as follows:

a. Since the rate of oxygen production is 0.15 M/min, we can make the following setup:

$\frac{r_{N_2O_5}}{-2} =\frac{r_{O_2}}{1}\\\\r_{N_2O_5}=\frac{r_{O_2}}{-2} =\frac{0.15M/min}{-2}\\\\ r_{N_2O_5}=-0.075M/min$

b. Since the rate of oxygen production is 0.15 M/min, we can make the following setup:

$\frac{r_{N_2O_4}}{2} =\frac{r_{O_2}}{1}\\\\r_{N_2O_4}=\frac{r_{O_2}}{2} =\frac{0.15M/min}{2}\\\\ r_{N_2O_4}=0.075M/min$

Best regards!

8 0

3 years ago

What are the equipments needed to determine the density of a liquid in laboratory ?

astraxan [27]

Answer:

A hydrometer is a special device used to determine the density of liquids.

Explanation:

I hope this helps you. Have a nice day!

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3 years ago

Some organizations are buying sections of forest. Once purchased, these sections will never be cut down. What is most likely the

yarga [219]

Answer:

Explanation:

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3 years ago

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An isotope of an element has a mass number of 129 and it has 74 neutrons. How many

Viktor [21]

Answer:

Explanation:

tiene 74 protones

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3 years ago

A 1.92 mol sample of hydrogen gas occupies 22.2 L. How many mol of hydrogen are needed to fill a 102.1 L container at the same p

tia_tia [17]

Answer:

8.83 moles of Hydrogen

Explanation:

We are told that 1.92 moles of H2 occupies 22.2 L at a certain pressure and temperature, and we are asked to calculate the quantity of moles of H2 are necessary to fill a container of 102.1 L. So, if the pressure and temperature are constant, then the equality expressed before 1.92 H2 moles = 22.2 L maintains. Therefore, we can calculate what is being asked as follows:

22.2 L ----- 1.92 H2 moles

102.1 L ---- x = (102.1 L × 1.92 H2 moles)/22.2 L = 8.83 H2 moles

This means that 8.83 H2 moles are necessary to fill a 102.1 L container at a certain pressure and temperature.

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3 years ago