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2 years ago

Why can some electric appliances be immersed in water without damage

1 answer:

3 0

Some electric appliances can be immersed in water without damage because they are well insulated. The electrical systems are well insulated and tightly sealed so that when they are immersed in water, no water can get into the electrical parts.

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Atoms of a given element will have the same mass. (3 points) True False

Likurg_2 [28]

Answer:

false

Explanation:

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2 years ago

When atoms come together, there is _______ between the positive nucleus and the negative electron clouds

vova2212 [387]

My guess is attraction.

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3 years ago

What is true of neutrons? They have no charge and are located inside the nucleus. They have no charge and are located outside th

Inessa [10]

They have no charge and are located inside the nucleus

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3 years ago

Read 2 more answers

if you started with 2.34 grams of methane and 8.32 grams of oxeygyn and the combustion reaction went to completion how many gram

Romashka-Z-Leto [24]

Answer:

Mass of CO₂ produced = 5.72 g

Explanation:

Given data:

Mass of methane = 2.34 g

Mass of oxygen = 8.32 g

Mass of CO₂ produced = ?

Solution:

Chemical equation:

CH₄ + 2O₂ → CO₂ + 2H₂O

Number of moles of methane:

Number of moles = mass/molar mass

Number of moles = 2.34 g/ 16 g/mol

Number of moles = 0.146 mol

Number of moles of oxygen:

Number of moles = mass/molar mass

Number of moles = 8.32 g/ 32 g/mol

Number of moles = 0.26 mol

Now we will compare the moles of carbon dioxide with oxygen and methane.

CH₄ : CO₂

1 : 1

0.146 : 0.146

O₂ : CO₂

2 : 1

0.26 : 1/2×0.26 = 0.13 mol

Less number of moles of CO₂ are produced by oxygen thus oxygen will react as limiting reactant.

Mass of CO₂:

Mass = number of moles × molar mass

Mass = 0.13 mol × 44 g/mol

Mass = 5.72 g

4 0

2 years ago

Which product in the reaction forms a precipitate? KNO3 AgCl AgK no precipitate formed.

bija089 [108]

The precipitate formed in the reaction has been AgCl. Hence, option B is correct.

The precipitate has been the solid insoluble substance that has been formed as the product in the double displacement reaction.

The precipitate settles down in the aqueous reaction mixture and are resulted from the double displacement reaction.

<h3>Which one is the precipitate?</h3>

The reaction of silver nitrate and KCl has been:

$\rm AgNO_3\;+\;KCl\;\rightarrow\;AgCl\;+\;KNO_3$

The reactants in the reaction are in the aqueous form. Thus, silver nitrate and KCl are aqueous.

The potassium nitrate has been an aqueous solution, while the silver chloride has been the solid product that precipitates out.

$\rm AgNO_3\;(aq)\;+\;KCl\;(aq)\rightarrow\;AgCl\;(\downarrow)+\;KNO_3\;(aq)$

Thus, the precipitate formed in the reaction has been AgCl. Hence, option B is correct.

Learn more about precipitate, here:

brainly.com/question/5019199

7 0

2 years ago