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
Galina-37 [17]
3 years ago
14

If K3PO4= 0.250M, how many grams of K3PO4 are in 750.0ml of solution? Remember that M is the same as mol/L. Answer: 39.8g

Chemistry
1 answer:
sweet-ann [11.9K]3 years ago
4 0

Answer:

See below

Explanation:

Molarity = moles/Volume in Liters = (grams/formula wt)/Vol in Liters

=> Grams of solute = Molarity x Vol in Liters x formula wt

= (0.250M)(0.750L)(212.3g/mol)

= 39.8 grams

You might be interested in
¿Cuál es la molaridad de 275 ml de solución, que se preparó disolviendo 42 g de hidroxido de sodio NaOH en agua?
Dovator [93]
CEYSDINO IS A FILE SPAMMER SHE OR HE USES DIS FILE TO GET YOUR INFORMATION...

8 0
3 years ago
If 495 milliliters of carbon dioxide at 25°C and 101.3 kilopascals reacts with excess water, what is the theoretical yield of ca
postnew [5]

Answer:- 1.24 g

Solution:- The balanced equation for the formation of carbonic acid by the reaction of carbon dioxide with water is:

CO_2+H_2O\rightarrow H_2CO_3

From balanced equation, there is 1:1 mol ratio between carbon dioxide and carbonic acid. So, moles of carbonic acid will be equal to the moles of carbon dioxide used.

Moles of carbon dioxide can be calculated using ideal gas law equation as it's volume, temperature and pressure are given.

we need to convert mL to L, degree C to kelvin and kilopascals to atm.

495mL(\frac{1L}{1000mL})  = 0.495 L

25 + 273 = 298 K

101.3kPa(\frac{1atm}{101.3kPa)})

= 1 atm

Ideal gas law equation is:

PV = nRT

We want to find out the n, so let's rearrange this:

n=\frac{PV}{RT}

R is the universal gas constant and it's value is \frac{0.0821atm.L}{mol.K} .

Let's pug in the values in the equation and solve it for n.

n=\frac{1*0.495}{0.0821*298}

n = 0.02 mol

To convert the moles to grams we multiply the moles by the molar mass of carbonic acid.

Molar mass of carbonic acid = 2(1.008)+12.01+3(16.00)

= 2.016+12.01+48.00

= 62.03 gram per mol (rounded to two decimal places)

Let's multiply the moles by molar mass:

0.02mol(\frac{62.03g}{mol})

= 1.24 g

So, the theoretical yield of carbonic acid is 1.24 g.


6 0
3 years ago
Read 2 more answers
A car traveling at a constant speed goes around a sharp curve. Is the car accelerating? Explain.
lianna [129]
Yes the car is accelerating because it is changing direction as it goes around the corner
3 0
3 years ago
Read 2 more answers
a difference in density between gases creates buoyancy, which is the ability of an object to float. At 0 degrees celsius, helium
GaryK [48]

Answer: for an object or gas or liquid to float in another there must be a difference in density

Explanation:

Helium has a density of 0.18 kg/m³ and air has a density of 1.29 kg/m^³. If a balloon is filled with helium it will float in air due to density differences

Archimedes' principle states that the upward buoyant force that is exerted on a body immersed in a fluid, whether fully or partially submerged, is equal to the weight of the fluid that the body displaces

3 0
3 years ago
Which of the following statements is true?
pashok25 [27]
The answer is longitudinal waves more particles at right angles
3 0
3 years ago
Other questions:
  • What do we call compounds that will not dissolve in water
    14·2 answers
  • The unbalanced equation for the reduction of copper(I) sulfide with oxygen is given below. What mass of copper is produced from
    14·1 answer
  • Which statements accurately describe mass? Check all that apply.
    15·1 answer
  • Label the key for the weather map.
    8·1 answer
  • On.<br> pe. Where is the Hubble telescope located?
    8·2 answers
  • Select the appropriate words to fill in the blanks. A solution in which no more solute can be dissolved in is referred to as ___
    14·2 answers
  • Soo Hwan found a flowering plant at school and used a classification key to help him classify the plant. The flowers of the plan
    12·1 answer
  • What is the smallest unit found in a bar of gold. A. atom. B. Cell. C. Element. .D Nucleus PLEASE HELP
    9·1 answer
  • What is the hydronium ion concentration of a solution whose pH is 4.12?
    11·1 answer
  • What pressure is required to compress 196.0 liters of air at 1.83 atmosphere into a cylinder whose volume is 26.0 liters
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!