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3 years ago

Electron Identify the type of charge of the following particles in an

Chemistry

1 answer:

Alexeev081 [22]3 years ago

5 0

Answer:

Electron charge: -1

Neutron charge: 0

Proton charge: +1

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Density is the ratio of mass to volume. Another way to say this is

Oliga [24]

Answer:

my teacher would let u say the density to mass is the ratio but i think everyone's different

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3 years ago

Water molecules are polar because the...

dedylja [7]

B) water has a bent shape, this would be correct given that VSEPR theory and molecular geometry classify this as a polar shaped compound

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3 years ago

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A home remodeling company charges $10 per square yard for installing new carpets. What is the cost for installing a carpet for a

balu736 [363]

Answer:

$200.0 is the cost for installing a carpet for a room that measures 12.0 feet by 15.0 feet.

Explanation:

Length of the room = l = 15.0 ft = $\frac{15.0}{3} yard=5.0 yard$

Width of the room = w = 12.0 ft = $\frac{12.0}{3} yard=4.0 yard$

(1 yard = 3 feet)

Area of the room = l × w = $4.0 yard\times 5.0 yard = 20.0 yard^2$

Cost for installing a carpet for a room = $10 per square yard

Cost for installing a carpet for a room wit area 20.0 square yard :

$20.0 yard^2\times $10/ yard^2=$200.0$

$200.0 is the cost for installing a carpet for a room that measures 12.0 feet by 15.0 feet.

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3 years ago

What are 2 mixtures and explain your answer

liq [111]

Water and orange juice
Or orange juice and sodium chloride

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3 years ago

Consider the Fischer ester synthesis of methyl benzoate from benzoic acid and methanol in the presence of sulfuric acid as a cat

zlopas [31]

Answer:

48.8%

Explanation:

The reaction has a 1:1 mole ratio so;

Number of moles of benzoic acid reacted = mass/molar mass = 3.8 g/122.12 g/mol = 0.03 moles

So;

0.03 moles of methyl benzoate is formed in the reaction

Mass of methyl benzoate formed = 0.03 moles * 136.15 g/mol = 4.1 g

percent yield = actual yield/theoretical yield * 100/1

percent yield = 2.0 g/4.1 g * 100 = 48.8%

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3 years ago