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Ksju [112]
3 years ago
9

Complete the passage.

Chemistry
2 answers:
EastWind [94]3 years ago
4 0

Answer:

Sound waves and some earthquake waves are longitudinal waves.Ocean, light, and other earthquake waves are transverse waves

Explanation:

Natalka [10]3 years ago
3 0

Answer:

Longitudinal and Transverse

Explanation:

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Which of these statements is not true about chemical reaction rates? a Temperature can change a reaction rate. b The amount of r
Umnica [9.8K]

Answer:

The statement that is not true is: 'Temperature does not affect the reaction rate'.  

Explanation:

a) Temperature can change a reaction rate. <u> This is true</u>

Increasing the temperature increases the reaction rates because of the disproportionately large increase in the number of high energy collisions. It is only these collisions (possessing at least the activation energy for the reaction) which result in a reaction.

For example, the time taken to melt a metal will be much higher at a lower temperature but it will decrease as soon as we increase the temperature

b) The amount of reactants can increase the reaction rate.<u> This is true</u>

A higher concentration of reactants leads to more effective collisions per unit time, which leads to an increased reaction rate.

c) Temperature can decrease the reaction rate. <u>This is true </u>

Decreasing the temperature decreases the reaction rates because of the  decrease in the number of high energy collisions. It will result in a slower reaction.

d) Temperature does not affect the reaction rate.  <u>This is not true. </u>

The reaction rate is temperature dependent. The reaction rate increases with higher temperature and decreases with lower temperature.

4 0
3 years ago
What is latice energy
velikii [3]
The energy required to separate a mole of an ionic solid into gaseous ions
3 0
3 years ago
What is released in the process of an atom moving from an excited level to a lower energy level?
luda_lava [24]
The correct answer is a Photon.

One photon is released for each event. Photons are elementary particles of all electromagnetic radiation, including light.
7 0
3 years ago
An empty beaker weighs 25.91 g. When completely filled with water, the beaker and its contents have a total mass of 333.85 g. Wh
Finger [1]

Answer:

The beaker holds 307.94  mL

Explanation:

As we know that the volume that beaker hold is the volume of water that occupied by it.

For this first we have to find mass of the water in the beaker

This can be calculated by the subtraction of beaker's weight from the weight of beaker and water.

     weight of water (m) = total weight - weight of beaker

Empty weight of beaker = 25.91 g

Weight of beaker with water = 333.85 g

Weight of water = 333.85 - 25.91 = 307.94 g

Density of water = 1 g/mL

We have

      Mass = Volume x density

      307.94  = Volume x 1

      Volume = 307.94  mL

The beaker holds 307.94  mL

3 0
3 years ago
The limestone used in building the Egyptian pyramids was used because it is _____________
kvasek [131]

Answer:

hard and brittle

hope this helps you ☺️☺️

good night take care sweet dream

3 0
3 years ago
Read 2 more answers
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