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2 years ago

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A gas has a pressure of 3.16 atm at STP. I have decided to transfer it to a container that is 3 times larger than the original v

olume. What is a possible value for Pressure?

1 answer:

Maru [420]2 years ago

7 0

Answer: The new pressure will be 1.1atm

Explanation:

V1 = V

P1 = 3.16atm

V2 = 3V

P2=?

P1V1 =P2V2

3.16 x V = P2 x 3V

P2 = (3.16 x V) /3V

P2 = 1.1atm

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Why are salt and sugar both able to dissolve in water, even though the solutes have different types of chemical bonding?

Serjik [45]

Answer:Water is polar molecule, ionic compound dissolves in it as like dissolves like.

there is ionic interaction between a salt and water

Sugar has hydroxyl group in it. These hydroxyl group are able to form hydrogen bond with water molecule.

[Hydrogen bond : the interaction between a hydrogen, bonded with a highly electro-negative element (F,O,N) and other highly electro-negative element (F,O,N)]

Thus due to hydrogen bond sugar is soluble in water.

Explanation:The water molecules, , are polar, with positive partial charges on the hydrogen and a negative partial charge on the oxygen. This makes it possible to interact with ionic compounds such as salt (NaCl). This interaction occurs through the partially positive and negative ends of the water, so that the positive charges attract the negative ones. The NaCl salt in water dissociates (separates) into and ions. ions are surrounded by negative partial charges of water oxygen, while ions are surrounded by hydrogen ends with positive partial charge. In this way the salt is dissolved in water.

Sugar is a molecular compound formed by covalent bonds. In a polar covalent bond, electrons are shared unevenly. This creates a slightly negatively charged end and a slightly positively charged end. This is what happens with sugar. These extremes are those that interact with the positive and negative extremes of water, mentioned previously. Then it is possible to say that sugar dissolves in water because both substances are polar substances.

In short, water dissolves most of the substances that are polar or ionic, as in the case of sugar and salt.

6 0

2 years ago

Read 2 more answers

At a festival, spherical balloons with a radius of 280. Cm are to be inflated with hot air and released. The air at the festival

evablogger [386]

Answer:

8608.18 balloons

Explanation:

Hello! Let's solve this!

Data needed:

Enthalpy of propane formation: 103.85kJ / mol

Specific heat capacity of air: 1.009J · g ° C

Density of air at 100 ° C: 0.946kg / m3

Density of propane at 100 ° C: 1.440kg / m3

First we will calculate the propane heat (C3H8)

3000g * (1mol / 44g) * (103.85kJ / mol) * (1000J / 1kJ) = 7.08068 * 10 ^ 6 J

Then we can calculate the mass of the air with the heat formula

Q = mc delta T

m = Q / c delta T = (7.08068 * 10 ^ 6 J) / (1.009J / kg ° C * (100-25) ° C) =

m = 93566.96kg

We now calculate the volume of a balloon.

V = 4/3 * pi * r ^ 3 = 4/3 * 3.14 * 1.4m ^ 3 = 11.49m ^ 3

Now we calculate the mass of the balloon

mg = 0.946kg / m3 * 11.49m ^ 3 = 10.87kg

The amount of balloons is

93566.96kg / 10.87kg = 8608.18 balloons

5 0

2 years ago

Read 2 more answers

A container of hydrogen at 172 kPa was decreased to 85.0 kPa producing a new volume of 3L. What was the original volume?

Aneli [31]

Answer:

<h2>The answer is 1.48 L</h2>

Explanation:

In order to find the original volume we use the same for Boyle's law which is

$P_1V_1 = P_2V_2$

where

P1 is the initial pressure

P2 is the final pressure

V1 is the initial volume

V2 is the final volume

Since we are finding the original volume

$V_1 = \frac{P_2V_2}{P_1} \\$

From the question

P1 = 172 kPa = 172000 Pa

P2 = 85 kPa = 85000 Pa

V2 = 3 L

We have

$V_1 = \frac{85000 \times 3}{172000} = \frac{255000}{172000} = \frac{255}{172} \\ = 1.482558139...$

We have the final answer as

<h3>1.48 L</h3>

Hope this helps you

4 0

2 years ago

describe the energy inputs and outputs for the campfire. Use the law of conservation of energy to construct a valid qualitative

-Dominant- [34]

Answer:

The essence including its particular subject is outlined in the following portion mostly on clarification.

Explanation:

The energy throughout the campfire comes from either the wood's latent chemical energy until it has been burned to steam up and launch up across the campfire. The electricity generation for something like a campfire seems to be in the context including its potential chemical energy which is contained throughout the firewood used only to inflame the situation.
The energy output seems to be in the different types of heat energy radiating across the campfire, laser light generated off by the blaze, and perhaps a little number of electrical waves, registered throughout the firewood cracking whilst they combust throughout the blaze.

and,

chemical energy ⇒ heat energy + light energy + sound energy

6 0

2 years ago

A load of bauxite has a density of 3.11 . If the mass of the load is 220. metric tons, how many dump trucks, each with a capacit

kicyunya [14]

Answer : The number of dump trucks required are, 8

Explanation : Given,

Density of load of bauxite = $3.11g/cm^3$

Mass of load = 220 metric tons = $220\times 10^6g$

conversions used : 1 metric ton = 1000000 g

First w have to calculate the volume of load of bauxite.

$Volume=\frac{Mass}{Density}$

$Volume=\frac{220\times 10^6g}{3.11g/cm^3}=7.07\times 10^7cm^3$

Convert cubic centimeter to cubic yard:

$1cm^3=1.30795\times 10^{-6}yards^3$

So,

Volume of load = $\frac{1.30795\times 10^{-6}yards^3}{1cm^3}\times (7.07\times 10^7cm^3)$

Volume of load = 92.47 cubic yards

Now we have to calculate the number of dump trucks.

Capacity of a dump truck = 11 cubic yard

Number of trump trucks required = $\frac{92.47\text{ cubic yard}}{11\text {cubic yard}}=8.406\approx 8$

Thus, the number of dump trucks required are, 8

7 0

2 years ago