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4 years ago

a lithium atom has three protons three neutrons and three wletrons.what is the overall charge on this atom

Chemistry

1 answer:

CaHeK987 [17]4 years ago

3 0

The overall charge is neutral as three electrons cancels out the 3 proton

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Consider an electron with charge âˆ’eâˆ’e and mass mmm orbiting in a circle around a hydrogen nucleus (a single proton) with cha

PtichkaEL [24]

Answer:

Explanation:

The net force on electron is electrostatic force between electron and proton in the nucleus .

Fc = $\frac{1}{4\pi\epsilon} \times \frac{e\times e}{r^2}$

This provides the centripetal force for the circular path of electron around the nucleus .

Centripetal force required = $\frac{m\times v^2}{r}$

$\frac{m\times v^2}{r}=\frac{1}{4\pi\epsilon} \times \frac{e\times e}{r^2}$

$v^2=\frac{e^2}{4\pi \epsilon m r}$

$v=(\frac{e^2}{4\pi \epsilon m r})^{\frac{1}{2} }$

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3 years ago

If the reactants of wood when burning weigh 10 kgs, how much will the products weigh?

aksik [14]

Answer:

the weight of products is is equal the weight of the wood plus the weight of oxygen that was used to burn that wood, so weigh of the product is greater than 10 kilograms.

Explanation:

Conservation of mass (mass is never lost or gained in chemical reactions), during chemical reaction no particles are created or destroyed, the atoms are rearranged from the reactants to the products.

In this example wood (mostly carbon) and oxygen are reactants and carbon dioxide (mostly) is product of reaction.

7 0

2 years ago

Potential

Papessa [141]

Okay so this is in order of the blanks
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5 0

3 years ago

Read 2 more answers

A sample of water has a mass of 193 g. Salt is added to the water, and the final solution weighs 238 g. How much salt was added?

icang [17]

Answer:

45 g of salt was added

Explanation:

238g-193g=45g

3 0

3 years ago

9. A bond formed between a silicon atom and an oxygen atom is likely to be

Elanso [62]

<h2><u><em>Answer: </em></u></h2>

<u><em>The answer is </em></u>

<u><em>O ionic </em></u>

<h2><u><em>Explanation: </em></u></h2>

<em>A bond formed between a silicon atom and an oxygen atom is likely to be: ionic</em>

5 0

3 years ago