How many moles of sulfuric acid are required to make (4.0x10^2) mL of (1.140x10^-1) mol/L solution?
* Express your answer in scientific notation to the correct number of significant digits. Remember th:
scientific notation has one non-zero number to the left of the decimal point (i. e.: 1.23 x 104).
Note: Your answer is assumed to be reduced to the highest power possible.
Your
X10
Answer
units

See answer below

Explanation:

Hi there,

To get started, recall the formula of concentration in molar (M) units:

 where n is the moles of the solute, and V is the volume of the solution in liters (L).

We are asked for moles, so solve for n:

However, our prompt gives us volume in mL, so convert to liters (L):

However, due to significant digit convention, when multiplying/dividing the number of s.f. conserved is the same as the number with lowest amount of s.f.. Since 0.4 contains only 1 s.f., the final answer should only contain 1 s.f. as well:

(rounded)

Study well and persevere.

thanks,

2h2o2--> 2h2o + o2

this reaction is of the spontaneous decomposition of hydrogen peroxide down into water and oxygen.

add 2 molecules of hydrogen peroxide and 2 molecules of water. since oxygen is naturally diatomic, the total number of atoms of each element is now the same on both sides of the equation so it is balanced.

this may not be entirely correct but let me know.