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Rzqust [24]
2 years ago
15

Name one similarity and one difference between visible light and sound.

Chemistry
1 answer:
posledela2 years ago
8 0

Answer:

Light and sound both are waves, but sound requires a material medium to travel, and hence cannot travel in empty space while light can travel through vacuum but not through opaque materials. Both undergo refraction, diffraction and interference.

Explanation:

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If it takes 7,529 calories of heat to warm 750.0 grams of water, what was the temperature change? The specific heat of water in
Zigmanuir [339]

Answer:

The temperature change was 10.04 °C.

Explanation:

Calorimetry is the measurement and calculation of the amounts of heat exchanged by a body or a system. In this way, there is a direct proportional relationship between heat and temperature. The constant of proportionality depends on the substance that constitutes the body as on its mass, and is the product of the specific heat by the mass of the body. So, the equation that allows calculating heat exchanges is:

Q = c * m * ΔT

Where Q is the heat exchanged by a body of mass m, made up of a specific heat substance c and where ΔT is the temperature variation.

In this case you know:

  • Q= 7,529 calories (cal)
  • c= 1 \frac{cal}{g*C}
  • M=750 grams

Replacing:

7,529 cal= 1  \frac{cal}{g*C} *750 g* ΔT

Solving you get:

ΔT=\frac{7,529 cal}{1 \frac{cal}{g*C}*750 g }

ΔT= 10.04 °C

So, <u><em>the temperature change was 10.04 °C.</em></u>

6 0
3 years ago
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Which of the following represents an ion<br> 4He<br> Ca<br> Mg<br> Na+
sergeinik [125]
The answer is Na⁺.

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Magnesium, strontium and barium are a few of the elements that have the same properties as calcium. elements found in group 2 of the periodic table have similar properties to it.
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Organic matter plays an important part in the local, regional, and global water cycles due to its role in promoting water.
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