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ddd [48]
3 years ago
7

HELP ASAPPPP BRAINLIEST

Chemistry
1 answer:
weqwewe [10]3 years ago
5 0

Answer:

2nd option

Explanation:

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Suppose that a person eats a diet of 2391 Calories per day.a.) Convert this energy into J. Express your answer using four signif
alekssr [168]

Explanation:

(a)

The given data is:-

Energy = 2391 Calories

The conversion of calories to J is shown below as:-

1 calorie = 4.184 J

So,

Energy = 4.184 * 2391 J = 10003.944 J

Answer in four significant digits: - 1.000\times 10^4\ J

(b)

The conversion of calories to kJ is shown below as:-

1 calorie = 0.004184 kJ

So,

Energy = 0.004184 * 2391 kJ = 10.003944 kJ

Answer in four significant digits: - 1.000\times 10\ kJ

(c)

The conversion of calories to kWh is shown below as:-

1 calorie = 1.1622\times 10^{-6} kWh

So,

Energy = 1.1622\times 10^{-6}\times 2391 kWh = 0.002778873 kWh

Answer in four significant digits: - 0.002779\ kWh

8 0
4 years ago
What is the density (g/mL) of an object that has a mass of 0.03 kg and occupies a volume of 25 mL?
tatyana61 [14]
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Then divide the mass by the volume ----- 30g ÷ 25mL = 1.2
The density is 1.2g/mL<span />
5 0
3 years ago
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The mass of an object is 18g and its volume is 9 cm3 Sink Float​
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The answer is:
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Natasha2012 [34]

Explanation:

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What happens to wavelength as wave frequency increases?
KengaRu [80]

Answer:

As a wavelength increases in size, its frequency and energy (E) decrease. From these equations you may realize that as the frequency increases, the wavelength gets shorter. As the frequency decreases, the wavelength gets longer.

Explanation:

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