All categories

3 years ago

Why do the atoms in a piece of copper metal have no net charge?

Chemistry

2 answers:

Marat540 [252]3 years ago

6 0

Answer;

-The charges of the positive and negative copper ions cancel each other out.

Explanation;

-A normal atom has a neutral charge with equal numbers of positive and negative particles.That means an atom with a neutral charge is one where the number of electrons is equal to the atomic number.

-Atoms are electrically neutral because they have equal numbers of protons (positively charged) and electrons (negatively charged). If an atom gains or loses one or more electrons, it becomes an ion. If it gains one or more electrons, it now carries a net negative charge, and is thus anionic.

Alex787 [66]3 years ago

3 0

Answer: The correct answer is the charges of the positive and negative copper ions cancel each other out.

Explanation:

A copper metal having no net charge means that it is a neutral atom.

A neutral atom means that total number of protons is equal to the total number of electrons.

Protons carry positive charge and electrons carry negative charge of equal magnitude.

Hence, no net charge means that the charged of positive copper ions cancel the charges of negative copper ions

You might be interested in

Concentrated 8.2 of commercial chloride or chlorox diluted to 14% ?

ELEN [110]

Is it 8.06?

Or 58.57?

Don't get mad if there wrong!!
But please let me know if it's right or wrong tho.

7 0

3 years ago

With 21 g of Zinc, and 7 g of CuCl2, how much ZnCl2 is made in grams?

mina [271]

Answer: 7.07 grams

Explanation:

To calculate the moles :

$\text{Moles of solute}=\frac{\text{given mass}}\times{\text{Molar Mass}}$

$\text{Moles of} zinc=\frac{21g}{65g/mol}=0.32moles$

$\text{Moles of} CuCl_2=\frac{7g}{134g/mol}=0.052moles$

$Zn+CuCl_2\rightarrow Cu+ZnCl_2$

According to stoichiometry :

1 mole of $CuCl_2$ require 1 mole of $Zn$

Thus 0.052 moles of $CuCl_2$ will require= $\frac{1}{1}\times 0.052=0.052moles$ of $Zn$

Thus $CuCl_2$ is the limiting reagent as it limits the formation of product and $Zn$ is the excess reagent.

As 1 mole of $CuCl_2$ give = 1 mole of $ZnCl_2$

Thus 0.052 moles of $CuCl_2$ give = $\frac{1}{1}\times 0.052=0.052moles$ of $ZnCl_2$

Mass of $ZnCl_2=moles\times {\text {Molar mass}}=0.052moles\times 136g/mol=7.07g$

Thus 7.07 g of $ZnCl_2$ will be produced from the given masses of both reactants.

8 0

2 years ago

Volume can you measured in liters or cubic meters

evablogger [386]

Volume can be measures in liters

5 0

2 years ago

Develop a product by using principles of science to encounter environment related problems

Oxana [17]

It is because we are, this is the first time in human history, where we have technology and science is widely accepted, without being ridiculed by religious figures.
Science can provide us with enough detailed knowledge about nature to solve and prevent environmental problems. ... It is possible to prevent pollution in the future and develop 'clean' industrial processes that have no environmental impacts.
Develop a product by using principles of science to encounter environment related problems
It is currently believed that science and technology can provide effective solutions to most, if not all, environmental problems facing western industrial societies. ... It can therefore be concluded that science and technology have only very limited potential in solving current and future environmental problems.
Ways Technology is Helping the Environment
We use Less Energy to do Things.
Energy Production is Becoming Cleaner.
Clean Energy Systems are More Effective.
Food Production is Becoming More Eco-friendly
Recycling is Reducing Waste and Pollution.
Cities are Becoming Less Polluted
We Are Becoming More Aware Of Our Effect On The Planet
We Can Share More Knowledge And Understanding

4 0

2 years ago

If the half life is 6.3 minutes how much of a 128.0 milligram sample will remain after 15 minutes

zaharov [31]

Answer:

24.5

Explanation:

15/6.3 => 2.38 half lives passed.

.5^2.38 => 0.19198 decimal representation of the percentage that is left over after 2.38 half lives have passed.

0.19198 *128 = 24.5 mg of the material remaining.

6 0

2 years ago