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3 years ago

identify the reactants and products in the following chemical reaction C r 2 O 3 + 3 C ---> 2cr + 3CO

Chemistry

1 answer:

Ainat [17]3 years ago

6 0

Answer:

Cr2O3 and 3C are the reactants

2Cr and 3CO are the products

Explanation:

Cr2O3is reacting with 3C to form 2Cr + 3CO

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List the experiment procedures. Some steps have been filled in for you. You may need to adjust the numbers to match the steps yo

Whitepunk [10]

Answer:all u need to do is list what u are doing. Do u do FLVS? cuz tht was in ... have been filled in for you. You may need to adjust the numbers to match the steps you decide on. 1. Identify the variables. 2. Write out your hypothesis in an if/then format. 3.Gather your materials. 4. 5.

Explanation:

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3 years ago

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HELP! <br> A train travels 102 miles in 2 5/6 hours. What is its average speed in miles per hour?

aniked [119]

Answer:

36miles/hour

Explanation:

speed =distance÷time taken

102miles/2 5/6

102÷17/6

102×6/17

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3 years ago

A gaseous system undergoes a change in temperature and volume. What is the entropy change for a particle in this system if the f

deff fn [24]

Explanation:

Entropy means the amount of randomness present within the molecules of the body of a substance.

Relation between entropy and microstate is as follows.

S = $K_{b} \times ln \Omega$

where, S = entropy

$K_{b}$ = Boltzmann constant

$\Omega$ = number of microstates

This equation only holds good when the system is neither losing or gaining energy. And, in the given situation we assume that the system is neither gaining or losing energy.

Also, let us assume that $\Omega$ = 1, and $\Omega'$ = 0.833

Therefore, change in entropy will be calculated as follows.

$\Delta S = K_{b} \times ln \Omega' - K_{b} \times ln \Omega$

= $1.38 \times 10^{-23} \times ln(0.833) - 1.38 \times 10^{-23} \times \times ln(1)$

= $1.38 \times 10^{-23} \times (-0.182)$

= $-0.251 \times 10^{-23}$

or, = $-2.51 \times 10^{-24}$

Thus, we can conclude that the entropy change for a particle in the given system is $-2.51 \times 10^{-24}$ J/K particle.

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3 years ago

Someone do 5 plss:)))

eduard

Answer: The answer is B

Explanation: Looking at the table given, the more wire loops you put on the nail, the more paperclips that it can hold. Meaning the electromagnet gets stronger the more loops you put on the nail

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3 years ago

How many molecules are in 165 g of carbon dioxide?

devlian [24]

The molar mass of CO2 is 44 grams per mole.

165 grams / 44 grams per mole of CO2 = 3.75 moles CO2

Using Avogadro’s law where 1 mole of substance equals 6.023 x 10^23 molecules

3.75 moles CO2 (6.023 x 10^23 molecules /mole) = 2.26 x 10^24 molecules CO2

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3 years ago

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