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
Tema [17]
4 years ago
14

What is the molality of a solution that contains 54 grams of NaOH dissolved in 1.50 kg of water? (The molar mass of NaOH 40.00 g

rams/moles.)
Physics
1 answer:
expeople1 [14]4 years ago
8 0

Answer:

0.900 mol/kg

Explanation:

Molality is moles of solute per kilograms of solvent.

Converting 54 grams of NaOH to moles:

54 g NaOH × (1 mol NaOH / 40.00 g NaOH) = 1.35 mol NaOH

So the molality is:

m = (1.35 mol) / (1.50 kg)

m = 0.900 mol/kg

You might be interested in
Which of the materials would be able to scratch Quartz
Lelechka [254]
<span>anything harder than mohs scale 7 so eg Topaz, Corundum and diamond representing mohs scale 8 9 and 10 respectively.</span>
7 0
3 years ago
Need help ASAP! please help me with the images below to score 50 points!!
ki77a [65]
It will move to the right and most likely a tiny bit down
8 0
3 years ago
Read 2 more answers
In Thomson experiment, why was the glowing beam repelled by a negatively charged plate
algol13
<span>In Thomson experiment, why was the glowing beam repelled by a negatively charged plate, because the glowing beam was negatively charged. The glowing beam particles were attracted to the positive plate.

</span><span>J.JThomson proved that the cathode rays produced a stream of negatively charged particles called electrons. </span>
6 0
3 years ago
Read 2 more answers
An ideal fl uid fl ows through a horizontal pipe having a diameter that varies along its length. Does the sum of the pressure an
SOVA2 [1]

Answer:

The sum of kinetic and pressure energy Increases as the pipe diameter increases.

Explanation:

An everyday occurrence and practical of this question have to do with you holding a water hose.A reduction in the size of the outlet cause the an increase in pressure and  a gain in kinetic energy.Little wonder how gardeners are able to properly water flowers at far distances.

This can be backed with Bernoulli’s theorem about total energy.

If the pipe is not of constant cross section, then the velocity of the water flowing will be inversely proportional to the pipe’s cross-sectional area.

The kinetic energy of the water is proportional to the square of the flow velocity.This energy will be highest where the cross-section is least.

So where the Kinetic energy is maximum, the pressure energy is minimum,thereby favoring an increase in the sum of pressure and kinetic energy per unit volume.

7 0
3 years ago
in the diagram, q1 = +6.60 x 10^-6 C, q2 = +3.10 x 10^-6 C, and q3 = +5.30 x 10^-6 C. find the electric potential energy of q2.
Harrizon [31]

Answer: 1.48

Explanation:

Acellus

7 0
3 years ago
Other questions:
  • Light travels 300,000,000 m/s, and one year has approximately 32,000,000 seconds. A light year is the distance light travels in
    7·1 answer
  • if two materials are made from different kinds of atoms, what else should you expect to be different? a. the kinds of neutrons t
    12·2 answers
  • A 40.0-kg child running at 3.00 m/s suddenly jumps onto a stationary playground merry-go-round at a distance 1.50 m from the axi
    13·1 answer
  • How far can a person run in 15 minutes if he runs at an average speed of 16 km/hr?
    5·1 answer
  • At 20°C, a length of copper wire has a resistance of 10.0 Ω What is its resistance when the wire is heated to 65°C? Let α = 0.00
    15·1 answer
  • Of the following, the best insulator would be<br> Silver<br> copper<br> air<br> iron
    8·1 answer
  • A ball is dropped from rest out of a high window in a tall building for 5 seconds. Assuming the we ignore air resistance and ass
    10·2 answers
  • Marla made ice by freezing liquid water the freezerWhat did the freezer do to cause the change in the water?
    12·1 answer
  • A mass of 2kg has a kinetic energy of 16J.what is the momentum of the body?​
    10·2 answers
  • Help plz????????? Giving out Brainly
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!