Melted candle wax has no fixed shape, but it does have a fixed volume. So, melted candle wax is a A.Liquid
B.Gas
C.Mixture
D.Solid

Plz answer fast

This is for science so I just put chemistry

Answers

Answer 1

Answer: It is a liquid because when you have a liquid, there is no definite shape. Therefore, this would be the answer because it takes the shape of its container.

Final answer: a. Liquid

Answer 2

Answer: the answer is A.Liquid

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When the pressure changes from 1417 psi to psi the volume changes from 0.145 L to 0.878 l and the temperature changes from 287 k to 196k

Answers

Answer:

When the pressure changes from 1417 psi to 160.186 psi the volume changes from 0.145 L to 0.878 l and the temperature changes from 287 k to 196 k

Explanation:

According to general gas equation:

P₁V₁/T₁ = P₂V₂/T₂

Given data:

Initial volume = 0.145 L

Initial pressure = 1417 psi (1417/14.696 =96.42 atm)

Initial temperature = 287 K

Final temperature = 196 K

Final volume = 0.878 L

Final pressure = ?

Formula:

P₁V₁/T₁ = P₂V₂/T₂

P₁ = Initial pressure

V₁ = Initial volume

T₁ = Initial temperature

P₂ = Final pressure

V₂ = Final volume

T₂ = Final temperature

Solution:

P₂ = P₁V₁ T₂/ T₁ V₂

P₂ = 96.42 atm × 0.145 L × 196 K / 287 K × 0.878 L

P₂ = 2740.26 atm .L. K / 251.99 k. L

P₂ = 10.9 atm

atm to psi:

10.9 × 14.696 = 160.186 psi

Answer:

160.186 psi

Explanation:

Say no for polythene bags and say yes for paper bags. Comment on this slogan

Answers

Answer:

Yes

Explanation:

Calculate the heat required for the following two processes, and compare the results.a. A 100.0 g sample of solid ethanol melts at its melting point. Hfus = 4.94 kJ/mol

b. A 100.0 g sample of liquid ethanol vaporizes at its boiling point. Hvap = 38.6 kJ/mol

Answers

The heat required for the following two processes are:

a. 10.74 KJ

b. 83.92 KJ

Part a)

Given:

Mass (m) of ethanol = 100g

Heat of fusion, Hfus = 4.94 kJ/mol

To find:

Heat (Q) =?

Calculation for number of moles:

Mass of C₂H₅OH = 100g

Molar mass of C₂H₅OH = (2x12)+ (5x1) + 16 + 1 = 46g/mol

Number of Mole = Mass /Molar Mass

Number of mole (n) of C₂H₅OH = 100/46 = 2.174 moles.

Calculation for Heat of fusion:

Q = n x Hfus

Q = 2.174 mol x 4.94 kJ/mol

Q = 10.74KJ

Therefore, 10.74 KJ of heat is required to melt the ethanol.

Part b)

Given:

Mass of C₂H₅OH = 100g

Heat of vaporization, Hvap = 38.6 kJ/mol

To find:

Heat (Q) =?

Calculation for Heat of vaporization:

As calculated above, the number of mole in 100g of ethanol, C₂H₅OH is 2.174 moles.

The heat required to vaporize the ethanol can be obtained as follow:

Q = n x Hvap

Q = 2.174 mol x 38.6 kJ/mol

Q = 83.92 KJ

Therefore, 83.92 KJ of heat is required to vaporize the ethanol.

Find more information about Heat of fusion here:

brainly.com/question/87248

Answer:

A. 10.74 KJ

B. 83.92 KJ

Explanation:

A. Data obtained from the question include the following:

Mass (m) of ethanol = 100g

Heat of fusion, Hfus = 4.94 kJ/mol

Heat (Q) =..?

Next, we shall determine the number of mole in 100g of ethanol, C2H5OH. This is illustrated below:

Mass of C2H5OH = 100g

Molar mass of C2H5OH = (2x12)+ (5x1) + 16 + 1 = 46g/mol

Number of mole (n) of C2H5OH =..?

Mole = Mass /Molar Mass

Number of mole (n) of C2H5OH = 100/46 = 2.174 moles.

Now, we can obtain the heat required to melt the ethanol as follow:

Q = n x Hfus

Q = 2.174 mol x 4.94 kJ/mol

Q = 10.74KJ

Therefore, 10.74 KJ of heat is required to melt the ethanol.

B. Data obtained from the question include the following:

Mass of C2H5OH = 100g

Heat of vaporisation, Hvap = 38.6 kJ/mol

Heat (Q) =..?

As calculated above, the number of mole in 100g of ethanol, C2H5OH is 2.174 moles.

The heat required to vaporise the ethanol can be obtained as follow:

Q = n x Hvap

Q = 2.174 mol x 38.6 kJ/mol

Q = 83.92 KJ

Therefore, 83.92 KJ of heat is required to vaporise the ethanol.

C. From the above calculations, a higher amount of heat energy i.e 83.92 KJ is required to vaporise the ethanol and a lesser amount of heat energy i.e 10.74 KJ is needed to melt the ethanol.

How do you calculate the density?

Answers

The way to calculate density is Mass/volume. I hope this helps

Which of the following does a simple circuit require?A. an energy source, a resistor, and a capacitor
B. a load, a conductor, and a resistor
C. a load, a resistor, and a capacitor
D. an energy source, a load, and a conductor

Answers

Ln h ch hc kh ñm ln oj

Answer:

I think its a i dont know but ya A

Explanation:

Vinegar is a solution of acetic acid. What is the molarity of the solution produced when 125g of acetic acid (C2H4O2) is dissolved in sufficient water to prepare 1.50L of solution?