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
Anna007 [38]
3 years ago
14

How many moles of water are in a beaker with 50 mL?

Chemistry
1 answer:
tatiyna3 years ago
5 0

Answer:

Number of moles = 2.8 mol

Explanation:

Given data:

Number of moles of water = ?

Volume of water = 50 mL

Density of water = 1.00 g/cm³

Solution:

1 cm³ =  1 mL

Density = mass/ volume

1.00 g/mL = mass/ 50 mL

Mass = 1.00 g/mL× 50 mL

Mass = 50 g

Number of moles of water:

Number of moles = mass/molar mass

Number of moles = 50 g / 18 g/mol

Number of moles = 2.8 mol

You might be interested in
How many significant figures are in the number 0.00230? O 6
EleoNora [17]

Answer:

0.00230 = <u>3 significant figures</u>

Explanation:

Significant digits or figures of a given number are the digits or figures that have meaning and contributes to the precision of the given number.        

Therefore, <u>0.00230 = 3 significant figures.</u>

Reason: The non-zeros figures and the trailing zero after the decimal are significant. Whereas, all the leading zeros are not considered significant.

4 0
3 years ago
How much energy is required to raise the temperature of a 300.0
Montano1993 [528]

Answer:

Q = 1455.12 Joules.

Explanation:

Given the following data;

Mass = 300 grams

Initial temperature = 22.3

Final temperature = 59.9°C

Specific heat capacity = 0.129 J/gºC.

To find the quantity of energy;

Q = mcdt

Where,

Q represents the heat capacity.

m represents the mass of an object.

c represents the specific heat capacity of water.

dt represents the change in temperature.

dt represents the change in temperature.

dt = T2 - T1

dt = 59.9 - 22.3

dt = 37.6°C

Substituting the values into the equation, we have;

Q = 300*0.129*37.6

Q = 1455.12 Joules.

8 0
3 years ago
Magma that is rich in feldspar and silica is called?​
weeeeeb [17]

Answer:

<h3>magma that is rich in feldspar and silica is called STRATOVOLCANO.</h3>
3 0
3 years ago
I didn’t mean to click that answer I dropped my phone on the computer.
Yanka [14]

its A plant like protist produce oxygen ...

5 0
3 years ago
What structural units make up network solids?
My name is Ann [436]
Non metal atoms got this from google btw
8 0
3 years ago
Read 2 more answers
Other questions:
  • Name two physical properties that characterize matter.
    11·2 answers
  • A 250. ML sample of 0.3M HCl is partially neutralized by the addition of 100. ML of 0.25M NaOH.Find the concentration of hydroch
    7·1 answer
  • Identify the number of significant figures in each value. 147,320 g
    8·2 answers
  • What is a Independent variable
    6·2 answers
  • Use the periodic table to identify the number of core electrons and the number of valence electrons in
    12·1 answer
  • If I add together water and an effervescent tablet, will the total mass before mixing be less than, equal to, or greater than th
    6·2 answers
  • That dissolve in water and has salty taste​
    13·2 answers
  • What 3 things will you do to dissolve a solid (salt) faster in a liquid (water)
    8·1 answer
  • How much energy does it take to raise the temperature of 80g of aluminium 15 degree Celsius
    15·2 answers
  • Imprints of the shells of ocean clams are often found in the rocks of the Appalachian Mountains. What do these imprint fossils M
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!