HELP!!!

The graduated cylinder below shows major scale divisions every 5 mL. How should the volume of the liquid be recorded? Use the co

OLga [1]

Explanation:

First, note that the surface of the liquid is curved. This is called the meniscus. This phenomenon is caused by the fact that water molecules are more attracted to glass than to each other (adhesive forces are stronger than cohesive forces). When we read the volume, we read it at the BOTTOM of the meniscus.

The smallest division of this graduated cylinder is 1 mL. Therefore, our reading error will be 0.1 mL or 1/10 of the smallest division. An appropriate reading of the volume is 36.5 0.1 mL. An equally precise value would be 36.6 mL or 36.4 mL.

How many significant figures does our answer have? 3! The "3" and the "6" we know for sure and the "5" we had to estimate a little.

6 0

1 year ago

If an element A is heavier than element B, then...

Aneli [31]

Answer:

C

Explanation:

because non metals mostly exist in gaseous and liquid state and since element A is heavier hence its a metal

4 0

2 years ago

How is carbon within the hydrosphere?

kap26 [50]

Answer:

Carbon is found in the hydrosphere dissolved in ocean water and lakes. Carbon is used by many organisms to produce shells. Marine plants use cabon for photosynthesis. The organic matter that is produced becomes food in the aquatic ecosystem.

8 0

2 years ago

Carbon-carbon bonds form the ""backbone"" of nearly every organic and biological molecule. The average bond energy of the C¬C bo

qwelly [4]

1.17 × 10¹⁵ s⁻¹ is the frequency and the wavelength is 3.43 × 10⁻⁷m of the least energetic photon that can break an average C - C bond.

WHAT IS CARBON BACKBONE ?

The carbon backbone is also called the carbon skeleton. All organic compounds are made up of carbon-carbon bonds, creating a carbon skeleton or backbone in the compounds.

Carbon Skeleton Structure :

The carbon skeleton structures consist of bending lines, periodically other elements are written in as well. The carbon skeleton characteristics that change the overall structure includes:

Length of carbon chain (the longer it is the more zig-zags are drawn).
Shape of the carbon chain (branches, rings, etc. all change the shape of the skeleton).
Location of attached functional groups, they need to be put onto the correct point in the skeleton.
Any double or triple bonds that are present, particularly as triple bonds change the shape of the skeleton.

<h3>What is wavelength?</h3>

Forms of electromagnetic radiation like radio waves, light waves or infrared (heat) waves make characteristic patterns as they travel through space. Each wave has a certain shape and length. The distance between peaks (high points) is called wavelength.

Step 1 :

Here we have to calculate the frequency and wavelength of the least energetic photon that can break an average C - C bond and have to find out in what region of the electromagnetic spectrum is this radiation.

Bond energy of C - C = 347 kJ

It is known that E = hv

⇒ $mu = \frac{E}{h}$

Where, E is the energy = 347kJ

h is the planck's constant = $6.626 * 10^{-34}J.s$

v is the frequency

Now substituting the values, frequency can be calculated as,

⇒ $v = \frac{E}{h} = \frac{347kJ/1kJ * mol/6.022 * 10^{23}}{6.626 * 10^{-34}J.s}$

≈ 8.70 × 10¹⁴ s⁻¹ .

Formula of Wavelength :

$\lambda = \frac{hc}{E}$

Where, λ = wavelength

h = 6.6 × 10⁻³⁴

c = 3 × 10⁸

E = bond energy

Now substituting the values, wavelength can be calculated as,

$\lambda = \frac{hc}{E} = \frac{6.6 * 10^{-34} * 3 * 10^{8} * 6.023 * 10^{23}}{347 * 10^{3}} = \frac{119.255 * 10^{-34} * 10^{31} * 10^{-3}}{347} = 0.343 * 10^{-6} = 3.43*10^{-7} m$

Thus, from the above conclusion we can say that 1.17 × 10¹⁵ s⁻¹ is the frequency and the wavelength is 3.43 × 10⁻⁷ m of the least energetic photon that can break an average C - C bond.

Learn more about the wavelength and frequency here :

brainly.com/question/6297363

#SPJ4

6 0

1 year ago

How the government support communities affected by xenophobia

Ann [662]

Answer:

They tax the citizens and then provide them with relief efforts

Explanation:

Common disease protocol

8 0

3 years ago

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