Convert the following rounding to two decimal places 875mmHg = atm​

Answer:

The Milky Way

Explanation:

Answer:

Your answer is the Milky WAy!

Brainliest?

Answer:

Explanation:

When a salt is dissolved , it increases  the boiling point . Increase in boiling point depends upon number of ions . So it is a colligative property .

.19 m AgNO₃ . Each molecule  will ionize into two ions . So effective molar concentration is 0.19 x 2 = .38 m

0.17 m CrSO4.Each molecule  will ionize into two ions . So effective molar concentration is 0.17 x 2 = .34 m

0.13 m Mn(NO₃)₂. Each molecule  will ionize into three  ions . So effective molar concentration is 0.13 x 3 = .39 m

0.31 m Sucrose(nonelectrolyte). Molecules will not ionize . So effective molar concentration is 0.31 x 1 = .31 m

Higher the molar concentration , greater the depression in boiling point .

So lowest boiling point is 0.13 m Mn(NO₃)₂.

second highest  boiling point is 0.19 m AgNO3.

Third lowest boiling point is 0.17 m CrSO4

Highest boiling point or lowest depression 0.31 m Sucrose.

a . 4

b .  1

c . 2

d . 3

Answer:

The type of force is known as cohesive force

Answer:

4 joules

Hope this helps if it does consider giving brainliest

Cya on the next one!

Explanation:

4 joules.

When it left the table it would have mgh potential energy that would have been converted to kinetic when it hit the floor. If the mass (m) was twice the energy would have been twice.

Answer:

A layer of soft hot rock

Explanation:

Answer:

tic

Explanation:

because it is my answer okay

Answer:

An atom

Explanation:

Atom is the smallest indivisible part of an element that retains its chemical identity. An atom contains the protons, neutrons and electrons, which are collectively called SUBATOMIC PARTICLES.

These particles ensure that the chemical identity of an element is maintained. For example, Chlorine has an element has an atom made up of 17 protons, 17 electrons and 18 neutrons. Therefore, chlorine atom is the smallest part of the chlorine element (Cl) that have all properties of that chlorine element.

Answer:

C. air pollution absorbs carbon dioxide

Explanation:

Carbon dioxide's role in the greenhouse effect is a major contributor to air pollution. Radiation and heat emanating from the earth's surface need to be released out into the atmosphere. But because carbon dioxide levels are so high, there is an ozone effect on the ground level.

Answer:

c. 1.58 KJ

Explanation:

I took the test:)

Answer:

1.58 KJ

Explanation:

Answer:

Charles's law states that the volume of a given amount of gas is directly proportional to its temperature on the kelvin scale when the pressure is held constant

The volume of a given gas sample is directly proportional to its absolute temperature at constant pressure (Charles's law). The volume of a given amount of gas is inversely proportional to its pressure when temperature is held constant (Boyle's law)

Explanation:

~Hope this helps

The complete question is shown in the image attached to this answer.

Answer:

C

Explanation:

Let us quickly remember that the EMF of a cell under non standard conditions in given by the Nernst equation.

This equation states that;

E = E°cell - 0.592/n log Q

Where

E = EMF under non standard conditions

E°cell= standard EMF of the cell

n = number of electrons transferred

Q = reaction quotient

If the reaction quotient is greater than 1 then cell potential is less than the standard cell potential.

The cell that generates the lowest cell potential is the cell depicted in option C because Q has the greatest positive value(Q<1).

The cell potential is the redox potential that measures the acquired to lost electrons at the electrodes. The lowest cell potential is generated by cell C with 0.5 M.

EMF is the electromotive force that is the total of the electric potential difference produced at the half cells of the galvanic cell (electrochemical cell).  

EMF of the cell is given as,

[tex]\rm E = \rm E^{\circ} - \dfrac{0.592}{n}\; log Q[/tex]

Here, E is the electromotive force, [tex]\rm E^{\circ}[/tex] is the standard EMF, n is the number of the transferred electrons, and Q is the reaction quotient.

When the reaction quotient (Q) is greater than 1 then, cell potential will be less than standard cell potential.

Therefore, cell C with 0.5 M and Q > 1 is a similar cell.

Learn more about galvanic cells here:

https://brainly.com/question/23819073

Answer:

5.62e-12 M

Explanation:

Since pH is concetration of H+

pOH is concentration of OH-

so 14-2.75= POH =11.25

and since 10^-PoH = concetration in Molarity

10^-11.25

5.62e-12

Answer:

6

Explanation:

C[tex]_6[/tex]H[tex]_{12}[/tex] + O[tex]_2[/tex] → CO[tex]_2[/tex] +H[tex]_2[/tex]O + heat can be balanced as C[tex]_6[/tex]H[tex]_{12}[/tex] + 6O[tex]_2[/tex] → 6CO[tex]_2[/tex] +6 H[tex]_2[/tex]O + heat. Therefore, the correct option is option C.

Combustion is a chemical reaction that often involves the presence of oxygen and produces light and heat within the form of flames. Because of the physical characteristics of the chemical process and the fact that more energy is produced than can be released through the surrounding medium, the rate or speed with which the substances that react combine is high. As a result, the ambient temperature about the reactants is increased, accelerating the reaction even further.

A lit match is a common illustration of a combustion reaction. A flame is produced when a match strikes something because friction warms the head of the match to a temperature where the chemicals respond by creating additional heat than can be released into the atmosphere. C[tex]_6[/tex]H[tex]_{12}[/tex] + O[tex]_2[/tex] → CO[tex]_2[/tex] +H[tex]_2[/tex]O + heat can be balanced as C[tex]_6[/tex]H[tex]_{12}[/tex] + 6O[tex]_2[/tex] → 6CO[tex]_2[/tex] +6 H[tex]_2[/tex]O + heat

Therefore, the correct option is option C.

To know more about combustion reaction, here:

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Answer:

Molefraction is the ratio of the number of moles of solute and total number of moles in solution. Moles = (given mass) / (molar mass) = 1000/18 = 55.5 moles. Therefore 1/(55.5+1) = 0.017. Molefraction of solute in 1 m aqueous solution is 0.017.

Explanation:

Answer:

0.011 moles

Explanation:

Applying,

PV = nRT.................... Equation 1

Where P = Pressure, V = Volume, n = number of moles, R = Molar gas constant, T = Temperature.

Make n the subject of the equation

n = PV/RT.................. Equation 2

From the question,

Given: P = 105 kPa = (105×0.00986923) = 1.036 atm, V = 250 mL = 0.25 L, T = 23 °C = (273+23) = 296 °C

Constant: R = 0.082 atm.dm³/K.mol

Substitute these values into equation 2

n = (1.036×0.25)/(0.082×296)

n = 0.011 moles

Answer:

1.   [tex]Si^{-4}[/tex]

2.  [tex]Co^{+2}[/tex]

Explanation:

An ion is formed when an atom that is said to be neutral gains or losses electrons.

It is thought that a negative ion (anion) is produced as it gains electrons and a positive ion (cation) is formed when it loses an electron.

Atomic number is the total number of protons and electrons in a neutral atom.

From the information

Protons = 14

electron = 18

Net Charge = no of proton - no of electron

= 14 - 18 = -4

Mass number = 14 + 15 = 29

Thus, the chemical symbol = [tex]Si^{-4}[/tex]

For ion with 27 proton, 32 neutrons and 25 electrons

Net charge = 27 - 25 = +2

Mass number = 27 + 32 = 59

Thus, the chemical symbol = [tex]Co^{+2}[/tex]

Answer:

a

Explanation:

because you need to add 2 to to hf to make it equal to h2

Answer:

Vapor pressure is defined as the pressure exerted by a vapor in thermodynamic equilibrium with its condensed phases (solid or liquid) at a given temperature in a closed system.

Explanation:

Answer: Bullying is not good!

Answer:

3?

Explanation:

it states 3 elements names so im assuming thats it and not including the element symbols

Answer:

Explanation:

Well you didn’t send a picture of the question but h2O is water so. If the questions answer has a option of water then pick that one

Answer:

B 1.17

Explanation:

There is .02 mols of nacl in a .4M solution

so you multiply by the molar weight of NaCl (58.44)

Answer:

Higher the salinity, more is the density.

Explanation:

Answer:

Thermal Conductor

Explanation:

Answer:

B. A specific mass of a liquid has a fixed volume at room temperature

Explanation:

Matter exists in three states namely; gas, liquid and solid. Each of these states has its own unique property that distinguishes it from others.

- Gases are free moving and do not have a constant or fixed volume.

- Liquids have fixed volume and take on the shape of their container. This means that liquids have a fixed or constant volume at a room temperature.

Based on the above properties of gas and liquid states of matter, "A specific mass of a liquid has a fixed volume at room temperature" is the correct option.

Answer:

It could be the Bbbbbbbbbbb

Explanation:

sodium has a positive charge and chlorine has a negative charge a negative and a positive charge you automatically for an ionic bond therefore the chlorine has to have a negative one charge

Answer:

amine

Explanation:

We have to bear in mind that amines are basic compounds. This idea will be very important in attempting to answer this question.

So, when she adds 5% HCl solution in order to extract the organic layer, the amine forms a hydrochloride salt which is contained in the aqueous layer.

The addition of a base such as NaOH leads to the formation of a white precipitate of the amine.

Answer:

Q = 1698.51 J

Explanation:

Given that,

Mass of water, m = 63.4 grams

It changes temperature from 22.3C to 28.7C.

We need to find the heat involved. The heat involved due to the change in temperature is given by :

[tex]Q=mc\Delta T[/tex]

Where

c is the specific heat of water, c = 4.186 joule/gram °C

So,

[tex]Q=63.4 \times 4.186 \times (28.7- 22.3)\\\\Q=1698.51\ J[/tex]

So, 1698.51 J of heat is involved.