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3 years ago

How many milliliters are in 8.12 moles of N2

Chemistry

1 answer:

maksim [4K]3 years ago

7 0

Answer:

1.2506 g/L is the density of N2

8.12 moles x 28g/mole = 227.36 g

227.36 g x L/1.2506 = 181.888 L (1000ml/L)= 181,888 ml

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use the formula force=mass × acceleration to find the force of a 20 kg cart rolling at an acceleration of .5 m/s

o-na [289]

Answer:

The answer is 10

Explanation:

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3 years ago

Select the definition that best describes a coenzyme. an inorganic ion that aids the biochemical function of a protein a molecul

Rasek [7]

Answer:

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3 years ago

Calculate the percent covalent character of a chemical bond between oxygen and beryllium.

dezoksy [38]

Beryllium Oxide has a molecular formula Be-O

% covalent character in Be-O = 100 - % ionic character in Be-O

Now,

% ionic character = {1 - exp[(-0.25)(E(Be)-E(O))²]}*100

where,

E(Be) and E(O) are the electronegativity values of Be and O

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E(Be) = 1.57

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% ionic = {1 - exp[(-0.25)(1.57-3.44)²]}*100 = 58.28%

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Ans: b) 41 percent

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4 years ago

Sound travels faster through solids than it does through either liquids or gases a student could verify this statement by

irina [24]

Group of answer choices.

A. Distance that sound travels through a solid, a liquid, and a gas.

B. Pitch of sound when it passes through a solid, a liquid, and a gas.

C. Distance sound travels through a solid, a liquid, and a gas at varying temperatures.

D. Time required for sound to travel a set distance through a solid, a liquid, and a gas.

Answer:

D. Time required for sound to travel a set distance through a solid, a liquid, and a gas.

Explanation:

Sound are mechanical waves that are highly dependent on matter for their propagation and transmission.

Sound travels faster through solids than it does through either liquids or gases. A student could verify this statement by measuring the time required for sound to travel a set distance through a solid, a liquid, and a gas.

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$Time = \frac {distance (x)}{speed (v)}$

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4 0

3 years ago

I’m trying to find the number of representative particles in 0.4 mol KCL what is my first step?

Lady_Fox [76]

Answer:

2.41 x 10²³ particles

Explanation:

Data Given:

no. of moles of KCl = 0.4 mol

no. of particles = ?

Solution:

To find number of particles we use following formula

number of moles = number of particles / Avogadro's number

as we have to find number of particles so rearrange the above equation

no. of particles = no. of moles x Avogadro's number . . . . . . . (1)

Where

Avogadro's number = 6.022 x 10²³ particles per mol

6.022 x 10²³ are number of particles in one mole of a substance. and this quantity is known as Avogadro's number

So,

put values in above equation 1

no. of particles = 0.4 mol x 6.022 x 10²³ (particles/mol)

no. of particles = 2.41 x 10²³ particles

So, 0.4 mol KCl contains 2.41 x 10²³ representative particles

6 0

3 years ago