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krek1111 [17]
3 years ago
12

A composition of reflections over parallel lines is the same as a __________.

Chemistry
2 answers:
8090 [49]3 years ago
6 0

Answer : Option A) Translation


Explanation : A composition of reflections over parallel lines is the same as a <u>Translation.</u>


To identify if the composition of reflections over parallel lines are same as translation or not?


We can check using a picture of some shape in the plane. Place the picture on the right side of two vertical parallel. Now, we can see the reflected the shape over the nearest parallel line, then check the reflection over the other parallel line. We see that the shape winds up in the same orientation, like it was just shifted over to the right. Hence, it is translation.

Andrej [43]3 years ago
5 0

Answer:

rotation

Explanation:

reflected twice

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A silver block, initially at 57.2 ∘C, is submerged into 100.0 g of water at 24.8 ∘C, in an insulated container. The final temper
Masteriza [31]

Answer:

96.5 grams is the mass of the silver block.

Explanation:

Heat lost by iron will be equal to heat gained by the water

-Q_1=Q_2

Mass of iron = m_1=?

Specific heat capacity of silver= c_1=0.240 J/g^oC

Initial temperature of the silver= T_1=120^oC

Final temperature = T_2=T=26.5^oC

Q_1=m_1c_1\times (T-T_1)

Mass of water= m_2=100.0 g

Specific heat capacity of water= c_2=4.184 J/g^oC

Initial temperature of the water = T_3=24.8 ^oC

Final temperature of water = T_2=T=26.5^oC

Q_2=m_2c_2\times (T-T_3)

-Q_1=Q_2

-(m_1c_1\times (T-T_1))=m_2c_2\times (T-T_3)

On substituting all values:

-(m_1\times 0.240 J/g^oC\times (26.5^oC-57.2^oC))=100.0 g\times 4.184 J/g^oC\times (26.5^oC-24.8^oC)

we get, m_1 = 96.5 g

96.5 grams is the mass of the silver block.

5 0
4 years ago
Why is it important to classify living things?
hammer [34]
<span> it allows scientists to identify, group, and properly name organisms</span>
5 0
3 years ago
Read 2 more answers
Reaction intermediates differ from activated complexes in that A. they are stable molecules with normal bonds and are frequently
vova2212 [387]

Answer:

they are molecules with normal bonds rather than partial bonds and can occasionally be isolated.

Explanation:

In chemistry, reaction intermediates are species that are formed from reactants and are subsequently being transformed into products as the reaction progresses. In other words,  reaction intermediates are species that do not appear in a balanced reaction equation but occur somewhere along the reaction mechanism of a non-elementary reaction. They are usually short lived species that possess a high amount of energy. They may or may not be isolated.

They are often molecular species with normal bonds unlike activated complexes that are sometimes hypervalent species.

3 0
3 years ago
Look at the following chemical reaction and determine what is true about Mg. Click 2 that apply.
Anna007 [38]

Answer:

The answer to your question is b. Mg is being oxidized and c. Mg is the

                                                    reducing agent.

Explanation:

Reduction is the gain of electrons

Oxidation is the loss of electrons

Reducing agent is the element that oxidizes itself and reduces another element.

Oxidizing agent is the element the reduces itself and oxidizes another element.

 In this reaction:

Magnesium loses electrons so it is being oxidized and it is the reducing agent.              

4 0
3 years ago
Calculate the molarity of 0.060 moles NaHCO3 in 1500. mL of solution
Jobisdone [24]

Answer:

= 0.4 M

Explanation:

data:

moles = 0.060 moles

volume = 1500 ml

             = 1500 / 1000

              = 1.5 dm^3

solution;

      molarity = \frac{no. of moles}{volume in dm^3}

                    = 0.060 / 1.5

         molarity  = 0.4 M

5 0
2 years ago
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