3 years ago

What is the mass of a object if it occupies a volume of 3.10 cm and has a density of 2.7 g/cm

Chemistry

1 answer:

irinina [24]3 years ago

8 0

Answer:

8.37

Explanation:

mass= volume x density

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What is the specific heat of a substance if 1450 calories are required to raise the temperature of a 240g sample by 20℃?

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6960 J/kg°C

Explanation:

specific heat= mass×specific heat capacity×increase in temperature

specific heat= 0.240×1450×20= 6960 J/kg°C

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3 years ago

What is a wave produced by vibrating electric charges that can travel in matter and empty space?

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The answer is A

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Use the Earth's Energy Budget diagram to answer the question. Based on the diagram, less solar energy that reaches Earth is ____

Ivan

<span>absorbed, radiated
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3 years ago

Ham radio operators often broadcast on the 6-meter band. The frequency of this electromagnetic radiation is MHz. [speed of light

Volgvan

Answer:

50 MHz

Explanation:

The relation between frequency and wavelength is shown below as:

$c=frequency\times Wavelength$

c is the speed of light having value $3\times 10^8\ m/s$

Given, Wavelength = 6 m

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$Frequency=\frac{c}{Wavelength}$

$Frequency=\frac{3\times 10^8}{6}\ Hz$

$Frequency=50\times 10^{6}\ Hz$

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Also, 1 Hz = $10^{-6}$ MHz

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3 years ago

The heat capacity of an object depends on its ______

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mass I hope can help this answer

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