4 years ago

Which of the following has three electrons in its valence shell?

1 answer:

5 0

Aluminum has three electrons in its valence shell. if you look at the periodic table, there are numbers at the top. in column 2, the elements have 2 valence electrons, in column 3 they have 3 valence electrons etc.

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How many grams of a 34.2% potassium sulfate solution would contain 274.4 g potassium sulfate?

mart [117]

$34,2\% \ \ \ \ \rightarrow \ \ \ 274,4g\\
100\% \ \ \ \ \ \ \rightarrow \ \ m_{x}\\\\
m_{x}=\frac{274,4g*100\%}{34,2\%}\approx 802,34g$

3 0

4 years ago

The hydrogen atoms of a water molecule are bonded to the oxygen atom by ________ bonds, whereas neighboring water molecules are

zloy xaker [14]

<span>d.polar covalent; hydrogen</span>

3 0

3 years ago

Read 2 more answers

Suppose you had used carbon tetrachloride, a liquid of density 2.20 g/mL, to determine the actual volume measured by your pipet.

VARVARA [1.3K]

Answer:

Carbon tetrachloride would be 2.2 fold heavier than water

Explanation:

Carbon tetrachloride (2.20g/mL) is denser than water (1.00g/mL)

4 0

3 years ago

The reason your classmate cannot find the compound in a chemical reference manual is that 2,4-diethyl-4-ethoxyhexane is the inco

Georgia [21]

Answer:

3-ethoxy-3-ethyl-5-methylheptane

Explanation:

In this case, we have to identify the longest chain of carbon in this case the longest chain is made with 7 carbons. Then we have to assign carbon 1. In this case, carbon 1 is the one nearest to the ethoxy group. With this in mind, we will have a methyl on carbon 5, a methyl on carbon 3 and an ethoxy group in carbon 3, so the name would be 3-ethoxy-3-ethyl-5-methylheptane.

See figure 1

I hope it helps!

8 0

3 years ago

Help

Archy [21]

A, B & C would all be correct.

8 0

3 years ago