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Brrunno [24]
3 years ago
11

When energy changes from one form to another (for example, chemica

Chemistry
1 answer:
Naddik [55]3 years ago
3 0

Answer:

energy transformation

Explanation:

energy transformation is when energy changes from one form to another. like in a hydroelectric dam that transforms the kinetic energy of water into electrical energy.

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A tow truck uses a force of 100 N to pull a car 10 meters. How much work was done?
Rainbow [258]
W = F * s
W = 100 * 10
W = 1000 J

In short, Your Answer would be 1000 Joules

Hope this helps!
8 0
3 years ago
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How many hydrogen atoms are in 5.70 mol of ammonium sulfide?
QveST [7]
<span>There are 2.74603 * 10^25 hydrogen atoms. Ammonium sulfide is represented by (NH4)2S. This means that there are 8 hydrogen atoms total. There are also 8 mol of H in ammonium sulfide. We also need to use avogadro’s number of 6.022 * 10^23. Hydrogen Atoms = 5.7mol * (8mol / 1mol) * 6.022 * 10^23 per mol Hydrogen atoms = 2.74603 * 10^25 hydrogen atoms.</span>
3 0
3 years ago
Explain why all glassware must be dry and the solvent anhydrous during formation and reaction of a grignard reaction. Further, e
mario62 [17]

Answer:

The glassware and solvent for the production of grignard reagent and its reaction should by dry and anhydrous so as to prevent the conversion of the grignard reagent into saturated alkane. Acetone, is not a good solvent for the generation of grignard reagent because it has the potential of forming alcohol.

Explanation:

Grignard reagent is a compound formed by the reaction of halide of alkyl or alkene with magnesium metal. This makes the compound more nucleophilic. Thus the availability of an electrophile around it will evoke a quick reaction. The presence of water in an acidic condition will generate hydroxonium ions which are highly electrophilic. There will therefore be an introduction of hydrogen ions to the grignard reagent and which will displace the MgBr leading to the formation of alkane.

Acetone tends to produce alcohol when they are exposed to grignard reagent, thus they are not appropriate to be used as solvent. This is due to the resultant highly electrophilic nature of the carbonyl carbon on the acetone, thus will react with the nucleophilic carbon on the grignard. The reaction can be represented as follows:

RMgBr + CH3(CO)CH3 + H (with hydrogen ions) >>>RCOH + Mg(OH)Br

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3 years ago
Which two observations below can be evidence that a chemical change has occurred
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Vaporization and Production of bubbles. Production of heat and melting are physical changes
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3 years ago
Cu has an anomalous electron configuration. write the observed electron configuration of cu.
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1s2 2s2 2p6 3s2 3p6 3d10 4s1
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3 years ago
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