How many moles of H2O are in 35 grams of H2O?

At constant temperature, if the volume of the gas is doubled, the pressure also doubles. The new pressure of the gas is 50°C.

Charles's law states that "the volume occupied by a definite quantity of gas is directly proportional to its absolute temperature.

It is expressed as;

V₁/T₁ = V₂/T₂

Given that;

If final volume is double of initial volume.

V₁/T₁ = V₂/T₂

V₁T₂ = V₂T₁

T₂ = V₂T₁ / V₁

T₂ = ( 1000cm³ × 25°C ) / 500cm³

T₂ = 25000m³°C / 500cm³

T₂ = 50°C

At constant temperature, if the volume of the gas is doubled, the pressure also doubles. The new pressure of the gas is 50°C.

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Answer:

scientific literacy provide essential tools for surviving in the news jungle and for responsible citizenship. They also teach us to understand our own actions, to review them critically, and to take care of our rights. This is why science education is important

Explanation:

Answer:

scientists could import or encourage breeding of a natural predator of the invasive species. it will be successful although may be a problem over time as the predator may become invasive.

Explanation:

this will greatly lower the amount of the invasive species as they are being consumed by an introduced predator, although you do risk making the predator an invasive species over time.

Answer:

48 000 cm^2

Explanation:

8000      1cm cubes

 each 1 cm cube side is  1 cm^2   and there are six sides to the cube , so each cube has   6 cm^2  surface area

  and there are  8000 of them     8000 * 6 cm^2 = 48 000 cm^2

Answer:

four single covalent bonds

Explanation:

cuz a carbon atom initially has four unpaired electrons in its outermost shell....sharing adds four more....making four bonds

Answer:

Warming it would make it come out. On a cold day the honey is frozen and atoms will not move as fast and are close toghether. When you warm it the atoms will move faster and the honey will come out of the bottle

Explanation:

Answer:

Because vanilla Ice cream contains vastly more milk, sugar, etc. Then vanilla extract. It only takes a very small amount in comparison to adding that flavor.

Explanation:

I hope this helps girl

Why is vanilla ice cream white instead of brown?

It is true that Vanilla beans are brown in color and it is interesting that with this brown color ingredient, Vanilla Ice Cream is still white. Well, the vast majority of vanilla flavoring comes in the form of extract. Vanilla beans are very expensive and pure Vanilla has great flavor. When Ice Cream is made, the Vanilla we put in the Ice Cream is very insignificant quantity when compared to the milk powder, sugar, and cream that goes into the Ice Cream. Due to the whipping and procedure of the making, the brown color of Vanilla is lost amongst the huge quantities of other ingredients and we get milky white yummy Vanilla Ice cream

Answer:

See pictures!

Explanation:

Here is a drawing of butane (C4H10); labeled #1. An isomer of butane will also have the chemical formula C4H10 but is depicted different geometrically. I labeled this one #2.

Answer:

Communication skills are the abilities you use when giving and receiving different kinds of information. Some examples include communicating new ideas, feelings or even an update on your project. Communication skills involve listening, speaking, observing and empathising. It is also helpful to understand the differences in how to communicate through face-to-face interactions, phone conversations and digital communications like email and social media.

Explanation:

Answer:

The definition. Communication skills enable individuals to understand others and to be understood themselves. A variety of aspects are important in the context of these skills, such as listening, speaking, observing and empathy.

Answer:

1/8th = 12.5%

Explanation:

Three half lives would be   1/2 * 1/2 * 1/2 = 1/8 th of original

Explanation:

[tex]molar \: mass(mg) = 24g. {mol}^{ - 1} mass = 24.3g \\ molar \: mass(h20) = 18g. {mol}^{ - 1} mass = 12g \\ n = \frac{mass}{molar \: mass} \\ n(mg) = 1.01mol wich \: is \: substance \: a\\ n(h2o) = 0.67mol \: which \: is \: substance \: b \\ \frac{ |n|a }{ |n|b } : \frac{a}{b} \\ \frac{1.01}{0.67}: \frac{1}{2} \\ 1.51 > 0.50 \\ therefore \: substnce \: b \: which \: is \: water \: steam \: is \: limiting \: reagent [/tex]

Answer: The temperature of the gas if 65.85g of N2 are placed in 17.5L container with a pressure of 1988 mmHg is 1780. 6° C

Explanation:

The ideal gas law states that the volume, pressure and temperature of the a gas is related to the number of moles.

It is represented thus;

P V = n R T

Parameters :

Pressure, P = 1988 mmHg

Volume, V = 17.5 L

number of moles, n = mass ÷ molar mass

mass of N2 = 65.84g

Molar mass of N2 = 28.02 g/ mol

n = 65.85 ÷ 28.02

n = 2. 350 moles.

Temperature = ?

Universal gas constant, R = 8.314 J/mol. K

Calculations :

T = P V ÷ n R

T = 1988 × 17.5 ÷ 2.350 × 8.314

T = 34790 ÷ 19. 5379

T = 1780. 6 ° C

Thus, the temperature of the gas is 1780. 6 ° C

Answer:

[tex]\boxed{N_t =0.1953125 \: grams}[/tex]

Explanation:

Formula:

[tex]N_t = N_0( { \frac{1}{2} })^{ \frac{t}{t_ \frac{1}{2} } } [/tex]

Where Nt is the amount of substance remaining after time t,

N0 is the amount of substance at time t = 0,

t is the time at which we have to find out how much substance disintegrated from t = 0 to t = t

& t_1/2 is the half life corresponding radioactive sample.

Given:

N0 = 200g

t= 40 days

t1/2 = 4 days

To find:

Nt =?

Solution:

Substituting given data in above formula,

[tex]N_t = N_0( { \frac{1}{2} })^{ \frac{t}{t_ \frac{1}{2} } } \\ N_t = 200( { \frac{1}{2} })^{ \frac{40}{4 } } \\ N_t = 200 \times 0.0009765625 \\ \boxed{N_t =0.1953125 \: grams} [/tex]

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Answer:

An expansion of suitable living space

Explanation:

Increase occurs in the population of the organism only occurs when there is a suitable environment present for that organism. Suitable environment means that place where all the needs of the organism are available such as food, water and shelter etc. If food and water are present in large amount and decrease in animals occurs that prey on that organism will increase the population of the organism.

Answer:

Increase

Explanation:

if the temperature is increasing it will be slowly melting the ice causing it to turn into a liquid which will make the kinetic energy in the molecules increase.

Winds and ocean currents are evidence for the process of regulating and stabilizing the climate patterns.

Ocean current is the flow or movement of water in a direction by gravity, wind, and difference in density of the water.

Wind currents pull water and create ocean currents. The current flow to westwards, which is called Coriolis effect.

Thus, Winds and ocean currents are evidence for the process of regulating and stabilizing the climate patterns.

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Answer:

diamond, graphite (types of carbon) and silicon dioxide (silica).

Explanation:

Substances with giant covalent structures are solids with very high melting points. All the atoms are linked by strong covalent bonds, which must be broken to melt the substance.

The events in the order of top to bottom for a digital recording to become sound waves through a speaker include:

This is defined as a pattern of disturbance caused by movement of energy along a medium.

The order of events which produces the sound heard by audience can be seen above.

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Answer: B

Explanation:

Answer:

To calculate the no. of moles you must know mass and molar mass of the product

Explanation:

# of moles = mass/molar mass

Answer:

10. Butanoic acid

11. Methylpropanoate

Explanation:

In this case first you need to identify the functional group,secondly identify the longest chain that contains the particular functional group:

10. The functional group for this compound is a carboxylic acid due to the "CHO2" group..we have four carbons which makes the parent chain to be butane.since it's acarboxylic acid we replace the "e" at the end to "oic acid".

11. The functional group is ester "RCOOR".For the ester the longest chain is counted from the part of the carboxylic acid which in this case is a propane,and the part from the alcohol becomes a substituent. With esters you replace the "e" at the end of the parent name to "oate". When you write it down you begin with the substituent in this case "methyl" and the rest follows...



hope it is clear enough

The cubic unit cell  this metal crystallize as is BCC structure .

The structure of a crystalline solid, whether a metal or not, is best described by considering its simplest repeating unit, which is referred to as its unit cell.

The unit cell consists of lattice points that represent the locations of atoms or ions.

The entire structure then consists of this unit cell repeating in three dimensions

[tex]\rm \rho =\dfrac{nM}{N_{0} a^{3}} \\\\\\\\\rm n =\dfrac{\rho N_{0} a^{3}}{M} \\\\\\\\Assuming\; it \; to \; be \; a\; BCC\; structure \\\\\\ r = \dfrac{\sqrt{3} \times a}{4} \\\\\\Therefore\; a = 3.23 \times 10^{-8}\\\\\\\\\rm n =\dfrac{13.3 \times 6.022 \times 10^{23}\times 3.23^{3}\times (10^{-8})^{3}}{135} \\\\[/tex]

n= 2

Hence our assumption was correct

It is a BCC structure .

Therefore the cubic unit cell  this metal crystallize as is BCC structure .

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Answer:

Explanation:

3 Apply Many scientific words, such as energy, also have everyday meanings. Use context clues to write your own definition for each meaning of the word energy.

A substance that has a pH value of 14 is a strong base because pH 8 to 14 represents base.

The pH value 1 to 6 indicates acidic, 7 shows neutral whereas pH from 8 to 14 shows basic nature. pH 1 shows strong acid which becomes weak when it goes to 6 while on the other hand, pH 8 is a weak base which increases when it reaches to 14.

So we can conclude that a substance that has a pH value of 14 is a strong base because pH 8 to 14 represents base.

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Answer:

C. It is a strong base

Explanation:

pH 1 to 6 is acid (weaker)

pH 7 is neutral

pH 6 to 14 is base (stronger)  

Answer:

2,3-dimethyl pentane.........

Answer:

Increases by 100 Pa

Explanation:

According to The Ideal Gas Equation,