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
netineya [11]
2 years ago
14

I need help, plz help me with this problem

Chemistry
1 answer:
Svetlanka [38]2 years ago
5 0

Answer:

It's b

Explanation:

I had the same exact question

You might be interested in
What is the study of clouds called?
Kamila [148]
The answer is Nephology
5 0
3 years ago
Calculate the molality of acetone in an aqueous solution with a mole fraction for acetone of 0.241. Answer in units of m.
Anit [1.1K]

Answer: The molality of solution is 17.6 mole/kg

Explanation:

Molality of a solution is defined as the number of moles of solute dissolved per kg of the solvent.

Molarity=\frac{n}{W_s}

where,

n = moles of solute

W_s = weight of solvent in kg

moles of acetone (solute) = 0.241

moles of water (solvent )= (1-0.241) = 0.759

mass of water (solvent )= moles\times {\text {Molar Mass}}=0.759\times 18=13.7g=0.0137kg

Now put all the given values in the formula of molality, we get

Molality=\frac{0.241}{0.0137kg}=17.6mole/kg

Therefore, the molality of solution is 17.6 mole/kg

3 0
3 years ago
Which statement about the density of warm water is most likely correct?
Damm [24]
Density is a property of a material which describes the mass of a material per unit volume. Density is said to be slightly dependent on temperature. We look at the density of water at different temperatures:
<span>
100 </span>°C: 958.4 kg/m^360 °C: 983.2 kg/m^320 <span>°C</span>: 998.2 kg/m^3

Therefore, warm water has a lower density than water in colder temperature.
3 0
3 years ago
9.44 x 10^3 In standard form
Marta_Voda [28]
9440 is standard form.
5 0
3 years ago
Erbium (Er) is element 68 on the periodic table. A sample contains 5.04×1023 atoms of Er. Calculate the amount of Er.
Korvikt [17]

Answer:

139.98 g to nearest hundredth.

Explanation:

Using Avogadro's Number:

One mole (167.26 g) of Erbium  equates to  6.022141 * 10^23 atoms.

So 5.04 * 10^23 = 167.26 * 5.04/6.022141

= 139,98 g.

3 0
3 years ago
Other questions:
  • Determine the molecular mass of a gas where 3.87 g occupies 0.896 l at standard conditions.
    12·1 answer
  • Someone please help me with one of them
    12·1 answer
  • Can some balance the equation?<br><br>FeBr3 + H2SO --&gt; Fe2(SO4)3 + HBr​
    12·1 answer
  • Please help!!!!!!!!!!!
    15·1 answer
  • Which of these provides evidence that a chemical reaction occurs?
    13·1 answer
  • At a certain temperature the vapor pressure of pure thiophene is measured to be . Suppose a solution is prepared by mixing of th
    15·1 answer
  • Match the following properties with the type of property they are (chemical or physical) or the type of change the substance is
    6·1 answer
  • Coolant is added to car radiators to keep the water from becoming a gas and evaporating when the car gets hot. Which physical pr
    7·1 answer
  • State joule thomson effect
    15·1 answer
  • NaCl and AgNO3 react in a double replacement reaction. Which is one of the products of this reaction?
    15·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!