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3 years ago

Why does the temperature not change

Chemistry

1 answer:

S_A_V [24]3 years ago

6 0

Answer:

Option A

Explanation:

Temperature of a body is due to the heat gained or loss. During a phase change, the atoms or molecules of a substance are undergoing change is temperature due to which no temperature change is observed during phase change. The heat in the transition phase is used to break bonds and the change in temperature is felt when kinetic energy change is complete. During transition, the average kinetic energy of the molecules remains unchanged and hence during a phase change a temperature do not changes until unless the phase change is completed.

Hence, option A is correct

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Unlike acceleration and velocity, speed does NOT need to specify

jarptica [38.1K]

Answer:

C) mass.

Explanation:

The speed of a body is given by the relation between the displacement of a body in a given time. It can be considered the greatness that measures how fast a body moves.

Speed analysis is divided into two main topics: average speed and instantaneous speed. It is considered a vector quantity, that is, it has a module (numerical value), a direction (Ex .: vertical, horizontal) and a direction (Ex .: forward, upwards). However, for elementary problems, where there is displacement in only one direction, the so-called one-dimensional movement, it is advisable to treat it as a scalar quantity (with only numerical value).

The mass of an object is not an important factor in determining the speed of that object. However, time, direction and distance are important factors in determining speed.

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3 years ago

Which two equations represent double-replacement reactions?

enyata [817]

Answer: A and D, I believe

Explanation:

8 0

2 years ago

Read 2 more answers

Which is the best reason that a geologist might carry a small dropper bottle filled with hydrochloric acid when doing fieldwork?

natta225 [31]

Answer:

C is the correct answer

Explanation:

to test for the presence of carbonate minerals in a rock

7 0

3 years ago

Matthew made a model of the human ear by creating the shape with plaster, covering the plaster with paint, and inserting a small

Valentin [98]

Answer:

The microphone will be replacing the sound waves that are captured by the liquid found in the mebranous system.

Explanation:

This mebranous system is made up of noble and very delicate parts such as: the endolymphatic sac, the utriculosacular duct, the saccule, the semicircular canals, the cochlear duct, the utricle and the reuniens duct.

5 0

3 years ago

Calculate the moles of O atoms in 0.658 g of Mg(NO3)2.

lara31 [8.8K]

Answer:

There are 0.0267 moles of oxygen in 0.658 grams of magnesium nitrate.

Explanation:

Mass of magnesium nitrate = m = 0.658 g

Molar mass of magnesium nitrate = M = 148 g/mol

Moles of magnesium nitrate = n

$n=\frac{m}{M}=\frac{0.658 g}{148 g/mol}=0.004446 mol$

1 mole of magnesium nitrate has 6 moles of oxygen atoms. Then 0.004446 moles magnesium nitrate will have :

$6\times 0.004446 mol=0.026676 mol\approx 0.0267$

There are 0.0267 moles of oxygen in 0.658 grams of magnesium nitrate.

8 0

3 years ago