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2 years ago

When an atom is netural the number of the ? and ? are the same 7TH GRADE SCIENCE

Chemistry

2 answers:

lys-0071 [83]2 years ago

6 0

Answer:

protons and electrons

Explanation:

it isn't protons/electrons and neutrons because neutrons have NO CHARGE.

so in other words you could have 100000 neutrons and 10 protons and 10 electrons and it would still be considered a neutral atom.

if this helped, id really appreciate brainliest :)

Effectus [21]2 years ago

5 0

protons and electrons are the same

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Draw the curved arrow mechanism for the reaction between (2S,3S)-3,5-dimethylhexan-2-ol and PCl3. Note the specific instructions

Vikki [24]

Answer:

(2R,3S)-2-chloro-3,5-dimethylhexane

Explanation:

As first step we have the attack of the OH group to the P atom in the PCl3 and one of the Cl atoms would leave. Then we will have a rearrangement to produce a double bond with the oyxgen on the OH. Finally the Cl produced will attack the carbon in a Sn2 substitution reaction to produce the halide with an opposite configuration.

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3 years ago

True or false(Internal forces act on the outside of an object, and external forces act within an object.)

kkurt [141]

False I’m not sure exactly

4 0

2 years ago

Please help :)

melamori03 [73]

The driving thrust of the car produced by the engine is the main forward force.

The main opposing forces are air resistance (from the wind) and friction (between the tyres and the road)

Since the air resistance + friction = driving force the car moves at a constant speed.

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2 years ago

What mass of the protein gelatin is needed to make 0.5 L of a 3 g/L gelatin solution? Show your work.

REY [17]

Answer:

m = 1.5 gram

Explanation:

Given that,

Density of protein gelatin, d = 3 g/L

The volume of protein gelatin, V = 0.5 L

We need to find the mass of the protein gelatin. The density of an object is given by :

d = m/V

Where

m is mass

$m=d\times V\\\\m=3\ g/L\times 0.5\ L\\\\m=1.5\ g$

So, the required mass is 1.5 gram.

6 0

2 years ago

The process in which an organic acid and an alcohol react to form an ester and water is known as esterification. Ethyl butanoate

egoroff_w [7]

Answer:

697 g

Explanation:

Ethanol (C₂H₅OH) and butanoic acid (C₃H₇COOH) react to form ethyl butanoate (C₃H₇COOC₂H₅) and water (H₂O).

C₂H₅OH + C₃H₇COOH → C₃H₇COOC₂H₅ + H₂O

The molar ratio of C₂H₅OH to C₃H₇COOC₂H₅ is 1:1. The moles of C₃H₇COOC₂H₅ produced from 6.00 moles of C₂H₅OH are:

6.00 mol C₂H₅OH × (1 mol C₃H₇COOC₂H₅/1 mol C₂H₅OH) = 6.00 mol C₃H₇COOC₂H₅

The molar mass of C₃H₇COOC₂H₅ is 116.16 g/mol. The mass corresponding to 6.00 mol is:

6.00 mol × (116.16 g/mol) = 697 g

7 0

2 years ago