Calculate the molar mass of a solute in a 1.30 L solution with of 0.50 M
containing 10.5 g of the solute.

Answers

Answer 1

Answer: 16 g/mol

Explanation: Molarity is Moles/Liters or Mol/L

(0.50 mol/L)(1.30L) = 0.65mol

(cancels out L)

Molar mass is g/mol so...

10.5g/0.65mol = 16.1 g/mol

Rounded to 2 sig figs is 16 g/mol


Related Questions


If you have 35 moles of sodium hydroxide (NaOH) in a 5000 mL solution, what is the concentration of the NaOH in the solution?

Answers

Answer:

7 mol.dm^3

Explanation:

formula for calculating concentration: C = n/v

Start by changing 5000ml solution to dm^3 because volume is in dm^3

1 ml = 1cm^3

then from a cm^3 to dm^3 you divide by 1000

5000ml = 5000cm^3

5000÷1000= 5dm^3

c = n/v

= 35/5

= 7mol.dm^3

Sometimes the number of electrons in an atom changes. These atoms are called what

Answers

Answer:

ions

Explanation:

does anyone wanna help me with my question for chemistry [i'll comment the question to you lol someone keeps sending links into my questions]

Answers

Answer:

same I was looking for a question like this I was asking question and someone kept commenting this bitly thing i dont kno I though it was just weird and frustrating lol

Predict Will you find starch in a plant leaf grown in the light? Why?

Answers

Answer:

You would find starch in a plant leaf.

Explanation:

This is due to the fact that when there is excess energy, it will be stored in plant tissue as starch.

When the water inside a living cell freezes, the ice crystals damage the cell. The wood frog is a unique creature that can survive being frozen. In extremely cold

conditions, the frogs liver produces large amounts of glucose (C6H12O6), which becomes concentrated in the frog's cells. How does the glucose help prevent ice

from forming in the frogs cells?

A)The added glucose dissociates and creates faster moving molecules.

B) The added glucose lowers the vapor pressure relative to the pure solvent.

C) The added glucose requires more energy which warms the frog

D)The added glucose lowers the freezing point of the solution within the frog's cells.

Answers

but i think its B but i need answer too

what is the unit for particles of titanium iii oxide
a. Ions
b. Atoms
C: molecules
d. Formula units

Answers

Answer:

d

Explanation:

How does viscosity affect boiling point?

A. Higher viscosity = Lower boiling point

B. Lower viscosity = Higher boiling point

C. Higher viscosity = Higher boiling point

D. Viscosity has no effect on boiling point

Answers

D- viscosity has no effect on boiling point

All matter has:

volume
mass
density
all of the above

Answers

I think the answer is mass.

What are several ways that humans destroy an ecosystem?

Answers

Answer:

Some human activities that cause damage (either directly or indirectly) to the environment on a global scale include population growth, overconsumption, overexploitation, pollution, and deforestation, to name but a few.

Explanation:

Hope this helped!!!

here ya goooooooo!!!!!!!!!!!!

Answers

Answer:

Thank youuuuu bestie, you really pulling through

Answer:

yessss

Explanation:

Burning a candle melts the wax, but also burns the wick. Explain how burning a candle involves both physical and chemical changes.

Answers

Answer:

Burning of the candle is both physical and chemical change. Burning of the candle melts the wax and hence physical state of wax has changed from solid to liquid.  

Again the wax combines with the atmospheric oxygen and changes to carbon dioxide, heat and light.  

Thus both the changes are accompanied by the burning of the candle.

Explanation:

hope this helps!

~mina

The shark and remora have a relationship that benefits the remora but neither helps nor harms the shark. What type of relationship is this?
commensalism
or
predation
or
mutualism
or
parasitism

Answers

Answer:

commensalism

Explanation:

It's not parasitism as the shark is not harmed in the relationship

A shell container is useful for

Answers

A shell container is useful for:It is used to carry many things.Also, Containers give developers the ability to create predictable environments that are isolated from other applications. And;Containers can also include software dependencies needed by the application, such as specific versions of programming language runtimes and other software libraries.

How is thermal energy transferred between two objects that are at different temperatures?


Group of answer choices


Heat flows from the object that has more thermal energy to the object with less thermal energy.


The object at a lower temperature pulls heat from the warmer object.


Heat flows from the warmer object to the cooler object until they reach the same temperature.


Heat flows back and forth between the two objects untl they reach the same temperature.

Answers

Answer:

heat flows from the object that has more thermal more energy to the object with less thermal energy

Please Please Please Please Please Help Me (please answer this question completely and 1 will friend you and help you with your question.)
How do static charges interact, and how are they released?
Use the sentence starters provided to help you answer the scientific explanation.

Static charges interact by ___________________________.

Static charges are released when ___________________________.

My scientific explanation is:
Your answer should include at least 6 complete sentences to explain the claim, evidence and reasoning.
Be sure to check your grammar and spelling.

Answers

Answer:

Static electricity is a type of energy that is produced by friction.

Explanation:

Static electricity may be the result when there is an imbalance between the negative charges and the positive charges in the surroundings. They are non contact forces. They pull of push without actually touching the body. The charged particles interact by pulling or pushing the uncharged particles.

These charges are released when they come closer to some uncharged or other charged particles like the electrostatic charges. It is the charge build up in an area.

liquids that mix completly are called

Answers

Liquids that mix completely are known as miscible liquids.Jun 6, 2020

Answer:

Miscible

Explanation:

Mixed completely

when was the element copper discovered? Who discovered the element copper?

Answers

9000bc, it’s been known forever I don’t think there’s an answer

The Mesopotamians discovered copper (Cu) in 9000 BC.

Why is it dangerous to have electric appliances near you when you are taking a bath?

Answers

Answer:

Because water conducts electricity, so if an electrical current were to meet the water while you're in there taking a bath, you would essentially be surrounded by a huge conductor.

Starting with a 7. 0 x 10-5 M. Allura Red stock solution you will need to calculate the volumes required to prepare 10.00 mL solutions of 3.5 x 10-5 M, 2.8 x 10-5 M, 2.1 x 10-5 M, 1.4 x 10-5 M, and 3.5 x 10-6 M before coming to lab. What volume of the stock solution will be required to prepare 10.00 mL of a 2.1 x 10-5 M solution of Allura Red?

Answers

Answer:

1) 5.0 mL, 4.0 mL, 3.0 mL and 2.0 mL respectively.

2) 3.0 mL

Explanation:

Hello there!

1) In this case, by considering that the equation we use for dilutions contain the initial and final concentrations and volumes:

[tex]C_1V_1=C_2V_2[/tex]

For the first four solutions, we compute the volume of the stock one (V1) as shown below:

[tex]V_1=\frac{C_2V_2}{C_1}[/tex]

Thus, we obtain:

[tex]V_1^1=\frac{3.5x10^{-5}M*10.00mL}{7.0x10^{-5}M} =5.0mL\\\\V_1^2=\frac{2.8x10^{-5}M*10.00mL}{7.0x10^{-5}M} =4.0mL\\\\V_1^3=\frac{2.1x10^{-5}M*10.00mL}{7.0x10^{-5}M} =3.0mL\\\\V_1^4=\frac{1.4x10^{-5}M*10.00mL}{7.0x10^{-5}M} =2.0mL[/tex]

2) In this case, for a final concentration of 2.1x10-5 M and a volume of 10.00 mL, the volume of the stock solution would be:

[tex]V_1=\frac{2.1x10^{-5}M*10.00mL}{7.0x10^{-5}M} =3.0mL[/tex]

Best regards!

PLEASE HELP FAST! NO LINKS
50 POINTS

Answers

Answer:

a

Explanation:

i am wrong haha

Answer:

are u out of time ?

Explanation:

Heat is the measure of the average kinetic energy of particles; temperature is the measure of the transfer of thermal energy .
true or false

Answers

I think the answer is true, no?

How many mL of a 6.0 M solution of HNO3 would be needed to prepare 300.0 mL of a 0.60 M solution of HNO3?​

Answers

Answer:

500mL.

Explanation:

Anyone know how to do this? It’s for Chemisty

Answers

You have to take the top quantity and divide it by the crossponent


Which of the following is an example of a physical property?*
the mass
ability to rust
flammability
ability to combust

Answers

Answer: The mass

Explanation: ability to rust, flammability, and ability to combust are chemical properties.

Please help I'm not sure what the answers are​

Answers

Answer:

An element's mass number (A) is the sum of the number of protons and the number of neutrons. The small contribution of mass from electrons is disregarded in calculating the mass number.

Which is a characteristic of a physical change?

a
The chemical bonds in the substance are unchanged.

b
The change cannot be seen.

c
The molecules all move at the same speed.

d
The substance has reacted with another substance.

Answers

The answer for your question is a

(GIVING BRAINLIEST) Which of the following is a good source of carbohydrates?
pears
meat
eggs
fish

Answers

Answer:

I would choose pear fruits are a good source of carbohydrates hopefully its right sorry if its not

Answer: Fruit

Fruits have a lot of carbohydrates in them :) Hope this helped!

how did the idea of what a cell was develop overtime​

Answers

Answer:

experiments

Explanation:

I am not sure but heres my take

Answer:

It was only after the invention of electron microscope that the idea developed

5 The atoms of a certain element each contain 36 protons and 8 valence electrons. Which
statement correctly identifies this element and describes its chemical reactivity? (8.58)
A The element is krypton, Kr, and it is not very reactive.
B The element is chlorine, Cl, and it is highly reactive.
C The element is krypton, Kr, and it is highly reactive.
D The element is chlorine, Cl, and it is not very reactive.

Answers

Answer:

dfdfaxc b

Explanation:

Mass = 35g Volume = 7cm3 What is the Density?​

Answers

Answer:

5 g/cm^3

Explanation:√3V=1.91293cm

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