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DanielleElmas [232]

3 years ago

10

What do elements in the same group have? the same atomic mass the same number of electron shells similar properties similar atom

ic numbers

2 answers:

djyliett [7]3 years ago

5 0

They all have the same number of electrons in their outer shell.

Brrunno [24]3 years ago

3 0

Answer:

They all have the same number of electrons in their outer shell.

Explanation:

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The density of silver is 10.49 g/mL. If a sample of pure silver has a volume of 12.993 mL, what is the mass of the silver?

r-ruslan [8.4K]

Answer:

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4 0

3 years ago

Which is an example of practical pursuit of alchemy

Oduvanchick [21]

A practical pursuit of alchemy was the development of metallurgy practices. As alchemists always tried to turn various metals into other things, metalworking techniques were developed even though their experiments were often unsuccessful.
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8 0

3 years ago

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What are two things affected by friction

11111nata11111 [884]

Answer:

speed and how slidey things are

Explanation:

4 0

3 years ago

An irregularly shaped piece of magnesium with a mass of 11.81 g was dropped into a graduated cylinder partially filled with wate

dlinn [17]

Answer:

The answer is

<h2>1.74 g/mL</h2>

Explanation:

The density of a substance can be found by using the formula

$density = \frac{mass}{volume} \\$

From the question

mass of magnesium = 11.81 g

volume = 6.80 mL

The density of the metal is

$density = \frac{11.81}{6.80} \\ = 1.73676470...$

We have the final answer as

<h3>1.74 g/mL</h3>

Hope this helps you

7 0

4 years ago

In a particular electroplating process, the metal being plated has a +4 charge. If 861.8 C of charge pass through the cell, how

Xelga [282]

Answer: $2.2326\times 10^{-3}$ moles

Explanation:

We are given:

Moles of electron = 1 mole

According to mole concept:

1 mole of an atom contains $6.022\times 10^{23}$ number of particles.

We know that:

Charge on 1 electron = $1.6\times 10^{-19}C$

Charge on 1 mole of electrons = $1.6\times 10^{-19}\times 6.022\times 10^{23}=96500C$

The metal being plated has a +4 charge, thus the equation will be:

$M^{4+}+4e^-\rightarrow M$

$4\times 96500C$ of electricity deposits = 1 mole of metal

Thus 861.8 C of electricity deposits = $\frac{1}{4\times 96500}\times 861.8=2.2326\times 10^{-3}$ moles of metal

Thus $2.2326\times 10^{-3}$ moles of metal should be plated

3 0

3 years ago