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AnnyKZ [126]
2 years ago
8

Calculate the percent by mass of the solute in an aqueous solution of 27.2 g ethanol in 250 g of total solution.

Chemistry
1 answer:
bagirrra123 [75]2 years ago
5 0

Answer:

Explanation:

H

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Select the correct answer.
almond37 [142]

Answer:

D. 5 moles

Explanation:

C3H8 + 5O2 → 4H2O + 3CO2

            5 mol                 3 mol

So, to make 3 mol CO2    5 mol O2 are needed.

3 0
3 years ago
A 0.0200 gram piece of unknown alkaline earth metal, M, is reacted with excess 0.500 M H 2 SO 4 , and the hydrogen gas produced
Rama09 [41]

Answer:

0.981atm

Explanation:

According ot Dalton's law total pressure of a mixture of non-reactive gas is equal to sum of partial pressures of individual gases.

total pressure= 1.01at

Number of gases=2

Gases: water vapor and hydrogen

partial pressure of water vapor= 0.029atm

1.01= partial pressure of water vapor+ partial pressure of hydrogen

1.01= 0.029 + partial pressure of hydrogen

partial pressure of hydrogen = 0.981atm

6 0
3 years ago
If normal rainwater has a pH of about 6.50, what is the hydrogen ion concentration, [H+]?
IceJOKER [234]

Answer:

.000000316

Explanation:

H+=10^-pH

6 0
3 years ago
Which of the following measurements are listed in the proper mathematical relationship?(Select all that apply)
Igoryamba

The measurements which are listed in the proper mathematical relationship include:

  • PV=k
  • V/T=k
  • PV/T = k

<h3>What is a Constant?</h3>

This is used in mathematical expressions and has a constant value which doesn't change in expression.

Options A,B and C have the appropriate constants as pressure is usually multiplied by volume.

Read more about Constant here brainly.com/question/15989275

#SPJ1

8 0
1 year ago
C -14 and N-14 both have same mass number yet they are different elements. Explain
KiRa [710]

Explanation:

hdy hey hey hegzyv vu g g ycgx

7 0
2 years ago
Read 2 more answers
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