Chemistry High School

If an object weighs 3.4526 g and has a volume of 23.12 mL, what is its density?
Select one:
a. 0.15 g/mL
b. 0.149 g/mL
c. 1.50 x 10^-1 g/mL
d. 0.1493 g/mL

Answers

Answer 1

If an object weighs 3.4526 g and has a volume of 23.12 mL, the density of the object will be 0.1493 g/mL.

Density calculation

To calculate the density of an object, you need to divide its mass by its volume. In this case, the mass of the object is 3.4526 g and its volume is 23.12 mL.

Density = Mass / Volume

Density = 3.4526 g / 23.12 mL

Calculating the density:

Density ≈ 0.1493 g/mL

In other words, the density of the object is 0.1493 g/mL.

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Related Questions

What is the wavelength of the light emitted by atomic Hydrogen according to Balmer's formula with m = 3 and n = 8? A) 389nm B)955nm C)384nm D)1950

Answers

The wavelength of the light emitted by atomic hydrogen, according to Balmer's formula with m = 3 and n = 8, is approximately 384 nm. So, the correct option is C.

According to Balmer's formula, the wavelength of the light emitted by atomic hydrogen can be calculated using the equation:

1/λ = R(1/m² - 1/n²)

Where λ is the wavelength, R is the Rydberg constant (approximately 1.097 x 10^7 m⁻¹), m is the initial energy level, and n is the final energy level.

In this case, m = 3 and n = 8. Plugging these values into the formula, we have:

1/λ = R(1/3² - 1/8²)

1/λ = R(1/9 - 1/64)

1/λ = R(55/576)

λ = 576/55 * 1/R

Substituting the value of the Rydberg constant, we get:

λ = 576/55 * 1/(1.097 x 10^7)

λ ≈ 3.839 x 10⁻⁷ meters

λ ≈ 384 nm

Therefore, the answer is option C) 384nm.

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pick the name for the given organic molecule: group of answer choices 2-ethylpentane 2-methylpentane 4-methylpentane 2-hexane

Answers

The given organic molecule has the molecular formula C7H16. Since there are no functional groups present in the molecule, it is an alkane.

The molecule has a chain of six carbon atoms and a branched chain containing two carbon atoms. The name of the molecule is derived from the longest carbon chain, which is six carbon atoms long, so the root name of the molecule is hexane. The two carbon atoms on the side chain are attached to the second carbon atom on the main chain, so it is called 2-ethylhexane the correct answer is 2-ethylhexane.

The name of the given organic molecule is 2-ethylhexane, and it has a molecular formula of C7H16. The molecule has a chain of six carbon atoms and a branched chain containing two carbon atoms. The name of the molecule is derived from the longest carbon chain, which is six carbon atoms long, so the root name of the molecule is hexane. The two carbon atoms on the side chain are attached to the second carbon atom on the main chain, so it is called 2-ethylhexane. This molecule is an alkane and is used as a fuel for internal combustion engines.

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