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
amid [387]
2 years ago
12

A 4.27 g sample of a lab solution contains 1.81g of acid. What is the concentration of the solution as a mass percentage?

Chemistry
1 answer:
vaieri [72.5K]2 years ago
5 0

Answer:

42.38875878%

Explanation:

i divided 4.27 g from 1.81g using a percentage calculator but im not sure if its correct

You might be interested in
Please help me and thank you
Alex17521 [72]

Answer:

The physical and chemical properties of the product do not match the properties of the reactant.

Explanation:

Chemical change:

The changes, that occur due to change in the composition of a substance and result in a different compound is known as chemical change.

These changes are irreversible

These changes occur due to chemical reactions

These may not be observed with naked eye

Example:

Combustion of fuel or wood: that oil or wood convert into energy, CO2 and ash in case of wood

Boiling of egg: that change the chemical composition of protein in the egg .

The reaction of Hydrogen and oxygen:

H 2 (g)  + O 2  (g) -------------------------------------> 2H 2O  (l)

The reaction between sugar and oxygen form a product which is different from the reactant that's why it indicate the occurrence of chemical reaction.

While in case of physical changes just state of matter are changed. Properties remain same.

6 0
3 years ago
Determine the percent water in MgSO4*7H20?
Semmy [17]

Answer:

\% H_2O=51.2\%

Explanation:

Hello!

In this case, since the percent water is computed by dividing the amount of water by the total mass of the hydrate; we infer we first need the molar mass of water and that of the hydrate as shown below:

MM_{MgSO_4* 7H_2O}=120.36 g/mol+7*18.02g/mol\\\\MM_{MgSO_4* 7H_2O}=246.5g/mol

Thus, the percent water is:

\% H_2O=\frac{7*MM_{H_2O}}{MM_{MgSO_4* 7H_2O}} *100\%\\\\

So we plug in to obtain:

\% H_2O=\frac{7*18.02}{246.5} *100\%\\\\\% H_2O=51.2\%

Best regards!

5 0
3 years ago
Use the iupac nomenclature rules to give the name for this compound - n2o3.
wel
  By  use   IUPAC  nomenclature   rule  compound  N2O3  is  named  as  

Dinitrogen  trioxide  (  answer  d)

Nitrogen (N2) is  named  before  oxygen(O3)  since    they  are  arranged  alphabetically.  In   addition  the  prefix  Di  is   used   infront  of  nitrogen  since    they  are  two  nitrogen  atoms   while  prefix  tri  is   used  infront  of  oxide  since  they  are 3   oxygen   atoms
8 0
3 years ago
Read 2 more answers
How many moles are in 60.66 g CF2Cl2
mafiozo [28]
There are 0.501 moles in 60.66g of CF2Cl2
7 0
3 years ago
Help I need this lol!!!!!
brilliants [131]

Answer:

green

Explanation:

4 0
3 years ago
Other questions:
  • Five different substances are given to you to be dissolved in water. Which substances are most likely to undergo dissolution in
    13·1 answer
  • Which law is based on the graph that is shown below? A graph is shown with pressure on the horizontal axis and volume on the ver
    10·2 answers
  • How are physical and chemical changes similar?
    13·2 answers
  • How does oxidation differ from reduction
    7·1 answer
  • Complete the paragraph about the formation of sodium phosphide.
    13·1 answer
  • Please check my answer! Due in a few minutes!
    9·2 answers
  • Select the correct answer.
    7·1 answer
  • Which substance is an inorganic compound?
    11·1 answer
  • What type of electrical charge does the electron carry? a. positive
    5·2 answers
  • A sample of silicon has an average atomic mass of 28.084amu. In the sample, there are three isotopic forms of silicon. About 92.
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!