1) How many grams of lithium, Li, contain 4.567 x 10^23 atoms?
2)What is the average mass (in grams) of one calcium, Ca, atom?
b) What is the average mass (in grams) of one mole of Ca atoms?

Answer:

I think B is the right answer.

hope this answer will help you

Answer:

441.81 mL

Explanation:

P1 x V1 = P2 x V2

V2 = P1 x V1 / P2

V2 = 608 x 545 / 750

V2 = 331360 / 750

V2 = 441.81 mL

MARK AS BRAINLIEST.

The parts of Earth that contain at least one form of water are Cryosphere, Biosphere, Geosphere, atmosphere and Hydrosphere. i.e all the given options are applicable.

All the parts of the earth contains at least one form of water and the hydrosphere on earth contains all form of water.

The atmosphere is the gaseous envelope round the earth. Breathing involves gaseous exchange between lungs and the atmosphere.

The biosphere is the living component. It is the part dominated and domiciled by life. T

The geosphere is the rock sphere of the earth. The earth's interior is all about the geosphere.

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Explanation:

3.Apply the ideal gas law: PV = nRT solving for n. Here you can use the pressure given in atm, but you must choose the 0.0821 atm L/mole K gas constant. Or you can change 4.5 atm to 3420 mm Hg and use the 62.4 mmHg L/mole K gas constant. You must change 500 ml to 0.5 L because both gas constants have units in L, and so the volume must be in liters so it can cancel out. And of course, you must change the temperature to Kelvin.

a. n = (4.5atm)(0.5L)

moliK)(298K) = 0.092 mole (0.0821 atmiL

b. 0.092mol 32g

⎛⎝⎜ ⎞⎠⎟ = 2.9 g

1mol

c. Remember that D = mass

vol so D = 2.9g

0.5L = 5.9 g/L

The total pressure of the system is equivalent to the sum of all the pressure of the individual gases. The total pressure of the flask is 2.37 atm.

According to Dalton's law, the total pressure of the system will be equivalent to the total of the pressures exerted by the individual gases present in the system.

The total pressure of gases is given as,

[tex]\rm P = P_{1} +P_{2}+ P_{3}.....P_{n}[/tex]

Given,

Substituting values in the above equation:

[tex]\begin{aligned}\rm P &= 0.72 + 1.65\\\\&=2.37\;\rm atm\end{aligned}[/tex]

Therefore, 2.37 atm is the total pressure of the flask.

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Answer:

the answer is ''4g''

Explanation:

The mass of Cs present in 15.0 g of caesium acetate is approximately 10.18 grams.

To calculate the mass of Cs (caesium) present in 15.0 g of caesium acetate ([tex]\rm CsCH_3COO[/tex]), you need to determine the molar mass of [tex]\rm CsCH_3COO[/tex] and then find the proportion of Cs in the formula.

Molar mass of [tex]\rm CsCH_3COO[/tex]:

Cs: 1 atom * atomic mass of Cs = 1 * 132.91 g/mol = 132.91 g/mol

C: 2 atoms * atomic mass of C = 2 * 12.01 g/mol = 24.02 g/mol

H: 6 atoms * atomic mass of H = 6 * 1.01 g/mol = 6.06 g/mol

O: 2 atoms * atomic mass of O = 2 * 16.00 g/mol = 32.00 g/mol

Total molar mass of [tex]\rm CsCH_3COO[/tex] = 132.91 + 24.02 + 6.06 + 32.00 = 194.99 g/mol

Now, find the proportion of Cs in the formula:

Mass of Cs in 1 mol of [tex]\rm CsCH_3COO[/tex] = 132.91 g/mol

Mass of Cs in 15.0 g of [tex]\rm CsCH_3COO[/tex] = (15.0 g * 132.91 g/mol) / 194.99 g/mol ≈ 10.18 g

Thus, the mass of Cs present in 15.0 g of caesium acetate is approximately 10.18 grams.

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Answer:

1/20

Explanation:

an hour is 60 minutes and its 3 minutes of an hour therefore its 3/60 hour  or 1/20 of an hour

Answer:

soln,

=3×60

=180 answer

In any chemical reaction, the mass of the products must equal the mass of the reactants. The mass of product B is the same as the combined mass of Reactant A and H₂O.

Answer:

sh5barch shougi

Explanation:

Explanation:

At 4th point the slump block is located

hope this helps you

have a great day :)

It is point 2, for anyone who sees this is the future

Answer:

As per Dalton's law of Partial pressure,

The total pressure of a mixture of gases is equal to sum of partial pressure of individual components of the mixture.

So, P=P_H+P_N+P_WP=P

H

​

+P

N

​

+P

W

​

\implies 864\ mm=220\ mm+410\ mm+P_W\implies⟹864 mm=220 mm+410 mm+P

W

​

⟹ P_W=864-630=234P

W

​

=864−630=234 mm of Hg.

Explanation:

Hope it helps<3

Answer:

Standard pressure is always 1.00atm. Example #1: How many moles of oxygen will occupy a volume of 2.50 L at STP? Standard temperature = 273K law.

Explanation:

Answer:

2.07 atm

Explanation:

Answer:

313.15

Explanation:

Answer:

C2H5

Explanation:

you first find the number of moles of both substances then divide by the lowest number in this case carbon was 1 and hydrogen was 2,515... then you multiply by a whole number which was 2 then it was now C2H5

Answer:

Law of conservation of linear momentum :- when there is no any external force applied on a system of particles then , momentum of system of particles will be conserved or you can say that if external force is zero. Then momentum of system of particles in intially = momentum of system of particles in finally

Explanation:

According to Newton's second law of motion, because no external force occurs on the system, The change in momentum is equal to zero; hence, the linear momentum is conserved. The entire linear momentum of an isolated system, that is, a system that is not subjected to any external forces, is conserved.

1. The total amount of momentum of the collection of objects in the system is the same before the collision as after the collision.

2. It must be conserved in an isolated system because isolated systems do NOT exchange matter or energy with their surroundings.

Answer:

2CH4 - - - > C2H6+3H2O

2C2

8H12

0O3

6CH4 + 3O - - - > 3C2H6+3H2O

6C6

24H24

3O3

I added oxygen to the reactant side because I presumed this must be a combustion of methane; since, H2O is made in the product side.

Hope this helps!

Answer:

For every 1 Ca(NO3)2 there are six (2 * NO3 or 2 * 3 O) oxygens. If you have 3 mole of Ca(NO3)2 then you have 18 mole of oxygen atoms (3*6).

Explanation:

Answer:

Abiotic factor would be soil.

Biotic factor would be ants.

Explanation:

Answer:

Evaporation: The physical process or stage where the water changes to vapor in the sky.

Condensation: The physical process or stage where the vaporised water (vapor) changes to water (rain)

Condensed liquid water: It is called a condensate. From the image, the condensate is rain

Anabolism builds molecules required for the body's functionality. The process of catabolism releases energy. Anabolic processes require energy.

The appearance of ions in solution makes a solution to conduct electricity.

Conductivity refers to the flow of current through a solution.

1) There is an evidence that reaction has occurred because of the formation of a precipitate

2) The conductivity decreases as more H2SO4 was added.

3) The indicator of the number of ions in the solution is the current recorded.

4) This evidence indicates that a reaction has occurred because the formation of a precipitate decreases the current.

5)  Ba(OH)2(s) ---->  Ba^2+(aq) + 3OH^-(aq)

H2SO4(aq) ---> 2H^+(aq) + SO4^2-(aq)

6) When the conductivity is at the minimum, It means that the   Ba(OH)2 is largely undissociated.

7) It does not conduct at a low point because there are no ions in solution.

8) It conducts more before and after this minimum point because of more ions in solution.

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Answer:

A. Pentane- 1,5-diamine

Explanation:

I just did this in chemistry today

Answer:

The other person is correct.

Explanation:

You should give him brainiest.

Answer:Conduction transfers heat between two materials that are touching, such as foil and chocolate pieces, or particles, such as the atoms in foil.Convection allows heat to be transferred in liquids, like water.Radiation transfers heat from a light bulb to paper.Conduction,

convection, and radiation move energy from the Sun to Earth and throughout Earth.

Explanation:

Conduction: This is a flow of heat by direct contact. Heat travels from a warmer object toward a colder object.  

Convection: This is a transfer of heat by mixing a fluid.

Radiation is the transfer of heat in wave form.

Conduction is the transfer of thermal energy through direct contact. Convection is the transfer of thermal energy through the movement of a liquid or gas.

Radiation is the transfer of thermal energy through thermal emission.

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#4

c is right above the earth's crest so it absorbs most earth .so highest temperature

#5

a is at top hence least heat absorbs so least temperature

#6

Answer:Tthe liquid in a graduated cylinder curves up at the edge where the liquid meets the wall of the cylinder. This curve in the liquid is called the meniscus and is used to determiine the volume of liquid in a graduated cylinder by observing the measurement tick closest to the bottom of the meniscus.

Explanation:

Hope it helps :D

Explanation:

Molality of a solution is the number of moles of solute dissolved in 1 Kg of the solvent. Thus, if one gram molecule of a solute is present in 1 kg of the solvent.

hope this helps you

have a great day :)

Answer + Explaination: A beam of light bends when it passes into a new medium because light travels slower in denser medium.

When an atom of chlorine forms an ionic bond with an atom of sodium, the

atom of sodium loses an electron.

This is also known as electrovalent bond and it is the bond which occurs

as a result of elements gaining or losing electrons in a reaction.

An atom of chlorine forming an ionic bond with an atom of sodium,means

the atom of sodium will have to lose an electron in other to achieve a

stable octet configuration.

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