Ask question

Ask question

All categories

3 years ago

6

Explain how elements are arranged on the periodic table. In other words, explain why they are not just listed in one long list,

but are instead grouped into rows and columns. Also, describe the placement of metals, metalloids, non-metals, and noble gases on the periodic table.

1 answer:

Anton [14]3 years ago

3 0

They are grouped together by the type of elements they are

You might be interested in

An alloy is a mixture of what?

Nastasia [14]

Answer:

An alloy is a mixture of chemical elements, which form an impure substance that retains the characteristics of a metal.

Explanation:

Have a nice day. Auf Wiedersehen.

5 0

3 years ago

What amount of carbon dioxide (in moles) is produced from the reaction of 2.24 moles of ethanol with excess oxygen?

algol13

Answer : The amount of carbon dioxide produced is, 197.12 grams.

Explanation : Given,

Moles of ethanol = 2.24 mole

Molar mass of carbon dioxide = 44 g/mole

The balanced chemical reaction will be,

$C_2H_5OH+3O_2\rightarrow 2CO_2+3H_2O$

First we have to calculate the moles carbon dioxide.

From the balanced chemical reaction, we conclude that

As, 1 mole of ethanol react to give 2 moles of carbon dioxide

So, 2.24 mole of ethanol react to give $2\times 2.24=4.48$ moles of carbon dioxide

Now we have to calculate the mass of carbon dioxide.

$\text{Mass of }CO_2=\text{Moles of }CO_2\times \text{Molar mass of }CO_2$

$\text{Mass of }CO_2=4.48mole\times 44g/mole=197.12g$

Therefore, the amount of carbon dioxide produced is 197.12 grams.

8 0

3 years ago

230 in scientific notation

rewona [7]

230 in scientific notation is:

2.3 x 10^2

7 0

3 years ago

The molecule ethylbenzene is considered an....

noname [10]

D. Cycloalkene
________________________

5 0

3 years ago

A chemist wants to extract copper metal from copper chloride solution. The chemist places 0.25 grams of aluminum foil in a solut

netineya [11]

Answer: About 0.20 grams of copper (II) is formed, and some aluminum is left in the reaction mixture

7 0

3 years ago