1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Lady bird [3.3K]
3 years ago
12

Sari is studying four different samples of materials. This table shows the mass and volume of the samples.

Chemistry
2 answers:
andre [41]3 years ago
7 0

Answer:

x: liquid

Explanation:

i got it right

gregori [183]3 years ago
5 0

Answer:

X: Liquid

Explanation:

As we know that there are 3 states of matter :

Solid state : It is a state in which the particles are closely packed and does not have any space between them. This state have a definite shape and volume.

Thus sample Z is solid.

Liquid state : It is a state in which the particles are present in random and irregular pattern. The particles are closely arranged but they can move from one place to another. This state have a definite volume but does not have a fixed shape.

Thus sample X is liquid.

Gaseous state : It is a state in which the particles are loosely arranged and have a lot of space between them. This state have indefinite volume as well as shape. Thus samples W and Y are gases.

Thus sample X is liquid

You might be interested in
Rearrange the following equation and solve for x when the hydrogen ion concentration is 0.001 M.
erastovalidia [21]

Answer : The correct option is, x = 10

Explanation : Given,

Concentration of H^+ ion = 0.001 M

pH : It is defined as the negative logarithm of hydrogen ion or hydronium ion concentration.

First we have to calculate the pH.

pH=-\log [H^+]

pH=-\log (0.001)

pH=3

Now we have to calculate we the value of 'x'.

The given expression is:

pH=2+\log x

Now put the value of pH in this expression, we get:

3=2+\log x

3-2=\log x

1=\log x

x=10

Therefore, the value of 'x' is 10.

4 0
4 years ago
Ideal gas (n 2.388 moles) is heated at constant volume from T1 299.5 K to final temperature T2 369.5 K. Calculate the work and h
bija089 [108]

Answer : The work, heat during the process and the change of entropy of the gas are, 0 J, 3333.003 J and -10 J respectively.

Explanation :

(a) At constant volume condition the entropy change of the gas is:

\Delta S=-n\times C_v\ln \frac{T_2}{T_1}

We know that,

The relation between the C_p\text{ and }C_v for an ideal gas are :

C_p-C_v=R

As we are given :

C_p=28.253J/K.mole

28.253J/K.mole-C_v=8.314J/K.mole

C_v=19.939J/K.mole

Now we have to calculate the entropy change of the gas.

\Delta S=-n\times C_v\ln \frac{T_2}{T_1}

\Delta S=-2.388\times 19.939J/K.mole\ln \frac{369.5K}{299.5K}=-10J

(b) As we know that, the work done for isochoric (constant volume) is equal to zero. (w=-pdV)

(C) Heat during the process will be,

q=n\times C_v\times (T_2-T_1)=2.388mole\times 19.939J/K.mole\times (369.5-299.5)K= 3333.003J

Therefore, the work, heat during the process and the change of entropy of the gas are, 0 J, 3333.003 J and -10 J respectively.

7 0
4 years ago
If an 85.0 mL container of helium gas at standard pressure is heated from 20.oC to 91oC and the pressure is increased to 2.8 atm
erastovalidia [21]

Answer: V₂ = 37.71mL

Explanation: To determine the new volume of Helium gas, use the Combined Gas Law, which states the following relationship among pressure, volume and temperature:

\frac{P_{1}V_{1}}{T_{1}} =\frac{P_{2}V_{2}}{T_{2}}

where index 1 relates to the initial state of the gas and index 2 to the final state of the gas.

Temperature is in Kelvin, so:

T = °C + 273

For this situation, standard pressure is 1 atm. Temperatures will be:

T₁ = 20 + 273 = 293 K

T₂ = 91 + 273 = 364 K

Solving:

V_{2}=\frac{T_{2}P_{1}V_{1}}{P_{2}T_{1}}

V_{2}=\frac{364*1*85}{2.8*293}

V_{2}=\frac{30940}{820.4}

V_{2}= 37.71

The new volume of He gas is 37.71 mL.

5 0
3 years ago
2. Which one of the following chemical equations is balanced? A. 2NaCl + H2SO4 → HCL + NaSO4 B. NH3 + H2O → 2NH4OH C. 2Na + S →
Lady_Fox [76]
D.  KOH + H₂SO₄ → KHSO₄ + H₂O
6 0
4 years ago
Read 2 more answers
Which sample of matter has the greatest distance molecules at STP?
Vlada [557]

Gases

Explanation:

At standard temperature and pressure, gases have the greatest distance between their molecules. Gases are the most random state of matter of all the three known state of matter.

  • There are three states of matter which are solid, liquid and gas.
  • The particles or molecules of a gas are very far apart and are held together by very weak attractive forces.
  • Liquids are much more closely held together by stronger attractive forces while those of a solid are the most closely held together by very strong attractive forces.
  • Typical examples of gases are helium, oxygen gas e.t.c.

Learn more:

gases brainly.com/question/7966903

states of matter brainly.com/question/1511197?source=aid8343617

#learnwithBrainly

5 0
3 years ago
Other questions:
  • The proposed mechanism for a reaction is 1. ClO-(aq) + H2O(l) => HClO(aq) + OH-(aq) SLOW 2. I-(aq) + HClO(aq) => HIO(aq) +
    13·1 answer
  • A jet airplane reaches 750 km/h on a certain flight. What distance does it cover in <br> 10 min?
    7·2 answers
  • The temperature –60 °C is higher than –60 °F.
    14·2 answers
  • When cells are dividing, it is
    9·1 answer
  • Why is high pressure required in the Haber process?
    7·1 answer
  • You are given 0.39 mol of niobium (Nb). How many grams of niobium do you have?
    14·1 answer
  • Describe the process of testing the pH of an unknown solution
    5·2 answers
  • Can soft drinks be part of a healthy diet?
    14·1 answer
  • At a certain temperature, the equilibrium pressures of NO2 and N2O4 are 1.4 bar and 0.46 bar, respectively. If the volume of the
    13·1 answer
  • Determine the percentage composition by mass of each of the elements in the following compounds
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!