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Vaselesa [24]
3 years ago
9

Is holding an ice cube on your hand a chemical change?

Chemistry
1 answer:
Strike441 [17]3 years ago
7 0
Yes. its a chemichal change.
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Which type of fertilization is common with animals that live in the water?
Makovka662 [10]

External fertilization in animals usually occurs in water or in damp areas in a process called spawning.

5 0
2 years ago
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1. a.) Calculate the wavelength of light which has a frequency of 5.25 x 10 14 Hz.
Scilla [17]
<h3>Answer:</h3>

5.71 × 10² nm

<h3>Explanation:</h3>

The product of wavelength and frequency of a wave gives the speed of the wave.

Therefore;

Velocity of wave = Wavelength × Frequency

c = f ×λ

In our case;

Frequency = 5.25 × 10^14 Hz

Speed of light = 2.998 × 10^8m/s

But;

λ = c ÷ f

  = 2.998 × 10^8m/s ÷  5.25 × 10^14 Hz

  = 5.71 × 10^-7 m

But; 1 M = 10^9 nm

Therefore;

wavelength = 5.71 × 10^-7 × 10^9

                  = 5.71 × 10² nm

The wavelength of light wave 5.71 × 10² nm

3 0
3 years ago
Why do solids exist ?
lubasha [3.4K]

Answer:

A solid's particles are packed closely together. The forces between the particles are strong enough that the particles cannot move freely; they can only vibrate. As a result, a solid has a stable, definite shape and a definite volume. Solids can only change shape under force, as when broken or cut.

7 0
2 years ago
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A piece of limestone erodes due to acid rain. This process can be best described as a...
scZoUnD [109]
A. Slow Chemical Change
4 0
3 years ago
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What is the solubility of silver chromate in parts per million?
pantera1 [17]
What is the solubility of barium chromate in parts per million?
*parts per million = Grams of Solute/grams of solution X 10^6 (which is ppm)
2.787 x 10^-3g/L x 1L/1000g x 10^6 = 0.02779, or 2.78 x 10^-2ppm

Answer in parts per million to three significant figures =2.78ppm

this is correct for the pearson mastering chemistry question
4 0
3 years ago
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