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timofeeve [1]
3 years ago
15

1. Energy is expended when a force moves matter across a distance. True/False

Chemistry
1 answer:
Novosadov [1.4K]3 years ago
8 0
1. True
2. True
3. False
4. True
5. True

3. Heat can be thought of as the movement of particles (molecules etc). The faster they move the hotter things are. Energy of movement is called kinetic energy. Temperature is a measure of the average kinetic energy of the particles, while thermal energy is the total kinetic energy of the particles.
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25 Points! A flashlight uses the chemical energy stored in a battery. This chemical energy is eventually converted into which tw
Gala2k [10]

Answer:A.) Mechanical and nuclear

Explanation:

iv,e got nuthing sorry im only a kid i have to leared that yet

4 0
2 years ago
All of the following metals replace hydrogen of an acid except.........
trapecia [35]

Answer:

Au

Explanation:

Below hydrogen on reactivity table.

hydrogen would rather give up its electrons.

8 0
3 years ago
Consider a disubstituted aromatic compound. The parent name is benzene and there is a chloro and bromo substituent. Disubstitute
Marina86 [1]

Answer:The correct names for the structure are:

--> 1. 1-bromo-3-chlorobenzene.

--> 3. meta-bromochlorobenzene.

--> 6. m-bromochlorobenzene.

Explanation:

Benzene is the simplest member of the aromatic hydrocarbons. It has a ring structure consisting of six carbon and six hydrogen atoms. This equally means that a benzene can have up to six substituents. One of the chemical properties is that benzene and other members of its series undergo substitution reaction whereby one or more of its six hydrogen atoms is replaced by monoatomic reagents.

Disubstituted benzene consists of two substituents which are described based on either numerical locants or specific words for the three possible forms.

The numerical locant method are used the same naming substitutes of other hydrocarbons. From the question, the numerical locant method was derived through using the following steps:

--> the functional group is benzene

--> there are two substituents which includes bromine( written as bromo) and chlorine ( written as chloro)

--> while placing the number, it's done alphabetically ('1-bromo' comes before '3-chloro') in a clockwise manner. This is to give chorine the lowest locant number.

The second naming method for a disubstituted benzene is the the ortho-, meta-, para- (or their singel letter equivalent) nomenclature method. This is only used for benzene structures.

--> ortho or O : this is used when the substituents are close to each other in the benzene ring.

--> meta or (m) : This is used when the substituents are separated by one carbon in the benzene ring.

--> para or (p): This is used when the substituents are across each other in the benzene ring

From the question, the bromine substituent is separated from the chlorine by one carbon atom, therefore it's meta-bromochlorobenzene or m-bromochlorobenzene.

8 0
3 years ago
1.25 moles of NOCl were placed in a 2.50 L reaction chamber at 427ºC. After equilibrium was reached, 1.10 moles of NOCl remained
kenny6666 [7]

Answer:

5.6 × 10^4

this is ur answer hope it helps u

5 0
3 years ago
Determine the number of moles of hydrogen atoms in each sample.
schepotkina [342]
The answer is going to be d
8 0
2 years ago
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