- La siguiente tabla, expone cómo desciende la temperatura (T) del aire con la altitud(h): Temperatura (ºC) 15 13,5 12 10,5 9 Altitud (m) 0 250 500 750 1000 Dado que la relación entre altura y temperatura viene dada por la siguiente fórmula: T=k*h+To Representa gráficamente los datos de la tabla y calcula To, que es la temperatura inicial (a una altitud de 0), y el valor de la constante k (pista k<0).

Stoichiometry can be used to determine the molality, molarity and volume of substances in a reaction.

The term concentration refers to the amount of substance present in a solution.

1. Number of moles of NaCl = 142.8 g /52 gg/mol = 2.7 moles

Molarity =  2.7 moles/  2.3 L = 1.17 M

2. 67.5 % of magnesium chloride implies 67.5 g of MgCl2 in 100 g of solution.

Number of moles of MgCl2 = 67.5 g/95 g/mol = 0.7 moles

molality = 0.7 moles/32.5 * 10^-3 = 21.5 m

3. Number of moles of the sugar = 62.5 g/342 g/mol = 0.18 moles

Number of moles of water = 250 g/18 g/mol = 13.9 moles

Since 1 g of water = 1 cm^3 water

Molarity =  0.18 moles/250  * 10^-3 = 0.72M

Molality =  0.18 moles/250  * 10^-3 = 0.72m

Mole fraction of sugar = 0.18/(0.18 + 13.9 ) = 0.01

Mole fraction of water =  13.9 /(0.18 + 13.9 ) = 0.99

4. A 48% solution of HCl contains 48 g of HCl in 100 g of water.

Number of moles of HCl = 48 g/36.5 g/mol = 1.3 moles

Number of moles of water = 52g/18 g/mol = 2.9 moles

Mole fraction of HCl = 1.3/(1.3 + 2.9) = 0.31

Mole fraction of water = 2.9/(1.3 + 2.9) =0.69

5. 1.75 mol  =  0.770 M  * V

V =  1.75 mol/0.770 M

V = 2.27 L

Learn more about concentration: https://brainly.com/question/3045247

Explanation:

i guess it's through thousands of research and experiments they conducted

Answer:

0.142

Explanation:

Answer:

0.142 moles.

You would have to convert the algorithm to a broken down version of the compound.

NH4NO3(aq] → NH+4(aq] + NO−3(aq]

The ammonium is removed for this case, concentration gets broken down to zero.

So here, if 1 liter is equal to 10 x 10 x 10 milliliters...

use the formula of n and c to help you figure out the moles.

C is equal to N divided by V, so in that case...

N equals C times V.

C times V is 0.425, or 17 over 40 in simplest form.

From there, multiply 17 over 40 by the current moles, cross out the liters, and multiply by 335, then, 10 to the power of -3. You have to flip it to negative, because it will cancel out either way. Change the equation by the liters, and you have 0.125

Hence, your correct answer is 0.125

Answer:

The heat capacity of an object is an amount of energy divided by a temperature change, which has the dimension L2·M·T−2·Θ−1. Therefore, the SI unit J/K is equivalent to kilogram meter squared per second squared per kelvin (kg m2 s−2 K−1 ).

Explanation:

Answer:

=4.12J/K - g

Explanation:

:)

Answer:

Explanation:

The density of a substance can be found by using the formula

[tex]density = \frac{mass}{volume} \\ [/tex]

From the question we have

[tex]density = \frac{6}{0.6} \\ [/tex]

We have the final answer as

Hope this helps you

Answer:

it's true

Explanation:

Many of the factors affecting sound quality involve how sound waves bounce around the room. The more walls, the greater chance of longer reverberation. ... Ceiling height, room width, and the number of walls all contribute to determining reverberation time. Usually the larger the room, the longer the reverb time

Answer:

is Answer of your question.

Thank you ☺️☺️

Answer:

NaCl (common salt) is solid in state and solid ions or compounds don't conduct electricity. It needs to be either melted, molten or dissolved in a solution (i.e. water) first.

Explanation:

Answer:

As greenhouse gas emissions blanket the Earth, they trap the sun’s heat. This leads to global warming and climate change. The world is now warming faster than at any point in recorded history.

Explanation:

;)

Generating power, Manufacturing goods, and deforestation

Answer:

Genetics is the scientific study of genes and heredity.

Explanation:

Answer:

REGULATOR - A device which controls the flow of current or voltage in a circuit to a certain desired level. RELAY - An electrical coil switch that uses a small current to control a much larger current. RELUCTANCE - The resistance that a magnetic circuit offers to lines of force in a magnetic field.

Explanation:

The mass in grams of 4.60 mol of nitrogen is 129g.

Mass of any substance will be calculated by using their moles as:

n = W/M, where

W = required mass

M = molar mass

Given molar mass of nitrogen (N₂) = 28.02 g/mol

Given moles of nitrogen (N₂) = 4.60 mole

On putting these values on the above equation and calculated for W, we get

W = (4.60 mol)(28.02 g/mol)

W = 128.89g = 129g

Hence the required mass is 129g.

To know more about moles, visit the below link:
https://brainly.com/question/13860160

Answer:

D

Explanation:

Answer:

Knowing the units of measurement that correspond with a number can give you so much more information than a digit sitting there by itself. Units can: Help to show another person the exact amount you have.

Explanation:

Answer:

Cuz they are reversible changes that do not change matter's chemical makeup or chemical properties. Processes involved in changes of state include melting, freezing, sublimation, deposition, condensation, and evaporation.

Explanation:

Answer:

Sample response: Leaf-cutter ants gather pieces of leaves and store them in their nests to provide raw materials and food for the fungus that grows on the leaf pieces. The ants feed on the fungus, so by collecting leaves the ants are effectively able to grow their own food supply.

Explanation:

Answer:

Leaf-cutter ants gather pieces of leaves and store them in their nests to provide raw materials and food for the fungus that grows on the leaf pieces. The ants feed on the fungus, so by collecting leaves the ants are effectively able to grow their own food supply.

Explanation:

edg 2020

The last one is endothermic, as you can notice we are using up energy (absorbing energy) in order for the reaction to occur.

Whereas the other ones release energy, as they are considered exothermic.

Answer:

Bowling ball

Explanation:

They are traveling at the same speed, but the bowling ball has more mass.  The bowling ball has more kinetic energy because more force is needed to stop the rolling bowling ball. Two balls with different masses moving at the same speed have different amounts of kinetic energy.

Answer:

Explanation:

As a ball rolls downhill, its potential energy from its height is converted into kinetic energy of its motion. Potential energy is given by mass x gravity x height. So for the same height, a ball with higher mass will have more energy. A bowling ball is heavier than a soccer ball and will have more energy.

Answer:

The molar mass is known to be 98.96 g/mol. 71.65g Clx. = 2.021mdl C1/2021 = 1. CH₂Cl. Jund Cl.

Explanation:

The Theory of Continental Drift says that the continents were once joined together and are drifting apart, Alfred Wegener is given credit for coming up with this theory.

Continental drift is a kind of illusion in which it looks like that continents changes their places over the surface of the earth. The Theory of Continental Drift was given by Alfred Wegener, it is a hypothesis and according to this theory the continents will move with respect to the geological time relative to each other. And due to their movement on the non planar or dynamic geographical base it looks like a drift.

Hence, option (2) is correct i.e. Alfred Wegener gave this theory.

To know more about continental drift, visit the below link:

https://brainly.com/question/394265

Answer:

a

Explanation:

Answer:

A. Logic

Explanation:

Answer:

Logic. When interepreting scientific information you have to always use logic

Explanation:

Answer:

Kinetic Energy

Explanation:

The energy an object has due to its motion is called kinetic energy.

Answer:

Structure of the tissue

Explanation:

Cartilage is more soft compared to the bone

Answer:

V2 = 0.465

Explanation:

To solve this question, we need to follow the equation below:

P1V1 = P2V2

We know that:

V1 = 500ml = 0.5L (must be convert to L)

P1 = 742 torr (must be convert to atm by divided by 760) = 0.976 atm

P2 = 795 torr = 1.05 atm

V2 = ?

P1V1 = P2V2

0.976 x 0.5 = 1.05 x V2

0.488 = 1.05 x V2

(Divided by side by 1.05 to get rid of it)

V2 = 0.465

Answer:

Density = m/v, where m is mass and v is volume

[tex]\Large \boxed{\displaystyle density \ (kgm^{-3})=\frac{mass\ (kg)}{volume \ (m^3)} }[/tex]

Answer:

a: 157cs = 1.57s

b: 42.7L = 42,700mL

c: 261nm = 0.000261mm

d: 0.0065km = 65dm

e: 642cg = 0.0064km

f: 8.25 x 10^2cg = 8,250,000,000ng

Answer:

a) 1.57

b) 42,700

c) 0.000261

d) 650

e) 0.00642

cant figure out f

Explanation:

Answer: Gravity

Explanation: The answer is gravity: an invisible force that pulls objects toward each other. ... So, the closer objects are to each other, the stronger their gravitational pull is. Earth's gravity comes from all its mass. All its mass makes a combined gravitational pull on all the mass in your body.