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
Dimas [21]
3 years ago
13

3.95 g of sugar (C6H12O6) is dissolved in water to make 158 mL of solution. Find the molarity.

Chemistry
1 answer:
12345 [234]3 years ago
8 0

Answer:

[C₆H₁₂O₆] = 0.139 M

Explanation:

Molarity si defined as a sort of concentration. It indicates the moles of solute that are contained in 1 L of solution.

We can also say, that molarity are the mmoles of solute contained in 1 mL of solution.

For this case, the solute is sugar (glucose). Let's determine M (mmol/mL)

(3.95 g . 1mol / 180g) . (1000 mmol / 1mol) / 158 mL

We determine moles, we convert them to mmoles, we divide by mL

M = 0.139 M

Moles = 3.95 g . 1mol / 180g → 0.0219 mol

We convert mL to L → 158 mL . 1L/1000mL = 0.158L

M = 0.0219 mol / 0.158L = 0.139 M

You might be interested in
How do I do scientific notation
lina2011 [118]
1. First, move the decimal place until you have a number between 1 and 10. If you keep moving the decimal point to the right in 0.0000073 you will get 7.3.
2. Next, count how many places you moved the decimal point.
7 0
3 years ago
In everyday speech the words precision and accuracy are often used interchangeably. When these terms are used in science are the
padilas [110]

Answer:

            No, in science their meanings are not the same as their everyday meanings.

Explanation:

                   In Science, Precision and Accuracy are defined as,

Accuracy:

               Accuracy is the value which is closest to the known or standard value.

Precision:

                While, Precision is the value of closeness of two measured values to each other.

Example:

             Let suppose in Chemistry Lab you weight an object as 50 g. While the actual weight of that object is 30 g. It means your reading is not accurate.

             On second measurement you find that the object weight is 31 g. This time your reading is not precise.

3 0
3 years ago
How do I convert units the easiest
damaskus [11]
To convert among units in the metric system, identify the unitthat you have, the unit that you want to convert to, and then count the number of units between them. If you are going from a larger unit to a smaller unit, you multiply by 10 successively
7 0
3 years ago
A container is filled with a mixture of gases:
strojnjashka [21]

Answer:

The partial pressure of chlorine gas in the mixture is 1.55 atm.

Explanation:

Partial pressure of oxygen gas = p_1=1.0 atm

Partial pressure of nitrogen gas = p_2=0.75 atm

Partial pressure of chlorine gas = p_3=?

Total pressure of the mixture of gases = P = 3.30 atm

Using Dalton's law of partial pressure:

P=p_1+p_2+p_3

3.30 atm=1.0 atm+ 0.75 atm+p_3

p_3=3.30atm - (1.0 atm+ 0.75 atm)=1.55 atm

The partial pressure of chlorine gas in the mixture is 1.55 atm.

8 0
3 years ago
Christopher conducts an experiment in which he tests how much sugar dissolves at different temperatures of water. One step requi
a_sh-v [17]

Answer:

305.65 K

Explanation:

Celsius to Kelvin => + 273.15

32.5 + 273.15

= 305.65 K

7 0
2 years ago
Other questions:
  • H2O goes to H3O+ is it a bronsted-Lowry acid or base?
    12·1 answer
  • A sample of metal had a mass of 17.29g and a volume of 5.68mL what is the density of this metal
    8·1 answer
  • A typical eukaryotic cell that has an abundant supply of glucose and O2 will generate a proton gradient in its mitochondria by _
    13·1 answer
  • This type of formula indicates the kind, number, arrangement, and bonds but not the unshared pairs of the atoms in a molecule.
    15·1 answer
  • How old are the oldest fossils on earth?
    7·2 answers
  • Noooo links What is a biome?
    8·2 answers
  • A substance has a molecular formula of C8H10N4O2
    10·1 answer
  • What is the volume of 13.21 g of ethane gas (C2H6) at STP?
    8·1 answer
  • What is a control group?
    11·2 answers
  • Which substance is a product of glycolysis, a precursor of gluconeogenesis and a precursor of the citric acid cycle?
    5·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!