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
e-lub [12.9K]
3 years ago
5

9. A Toyota Prius hybrid gets 21 kilometers per liter in highway driving. What is

Chemistry
1 answer:
Rom4ik [11]3 years ago
6 0

Answer:

...................................................................................

You might be interested in
What is the concentration of a solution containing 1.11 g sugar (sucrose, C12H22O11, MW = 342.3 g/mol, d = 1.587 g/cm3) in 432 m
djyliett [7]

Answer:

0.0075 M

0.0060 m

Explanation:

Our strategy here is to use the definition of molarity and molality to solve this question.

The molarity is the number of moles of solute, sucrose in this case, per liter of solution.

The molality is the number of moles of solute per kilogram of solvent.

So the molarity of the  solution is

M = moles of solute/ V solution

As we see we need the volume of solution since we are only given the volume of solvent, but this will be easy to compute since we have the density of  sucrose.

So determine the moles of sucrose , and the volume of solution:

Moles sucrose = 1.11 g/342.3 g/mol = 3.24 x 10⁻³ M

Volume of solution = Vol Sucrose + Vol glycerine

d = m/V ⇒ Vsucrose = m / d = 1.11 g/ 1.587 g/cm³ = 0.70 cm³

Vol solution = 432 mL + 0.70 mL = 432.7 mL  (1cm³  = 1 mL)

Vol solution = 432.7 mL x 1 L / 1000 mL = 0.4327 L

⇒ M = 3.2 x 10⁻³  mol / 0.4327 L = 0.0075  M

For the molarity what we need is to first calculate the kilograms of glycerine from the given density:

d = m/v ⇒ m = d x v = 1.261 g/cm³ x  432 cm³ = 544.75 g

Converting to Kg:

544.75 g x 1 Kg/ 1000 g = 0.544 kg

Now the molality is

m = mol sucrose/ kg solvent = 3.24 x 10⁻³ mol / 0.544 Kg = 0.0060 m

Note: In the calculation for  volume of solution we could have approximated it to that of just glycerine, but since the density of sucrose was given we calculated the total volume of solution to be more rigorous.

8 0
3 years ago
If you'd like to live in a place that has more moderate summers and winters, it'd be best to pack your suitcases and head to ___
aliya0001 [1]
The answer is Oregon.
6 0
3 years ago
Read 2 more answers
Arrange the following substance into acid,base and neutral. sodium chloride, tomato juice, vinegar,sea water,bicorbonate of sodi
pantera1 [17]

Answer:

sodium chloride: neutral.

tomato juice: acid.

vinegar: acid.

sea water: base.

bicarbonate of sodium​: base.

Explanation:

Hello there!

In this case, in agreement to the definition of the pH, as the measure of the acidity and basicity of a substance; it is important to recall that pH's below 7 stand for acidic substances and pH's above 7 stand for basic substances, whereas a pH of 7 defines a neutral one. In such a way, given the pH's of the given substances, 7, 4.05 to 4.65, around 2.5, about 8.1 and about 8.3 respectively for sodium chloride, tomato juice, vinegar, sea water, bicarbonate of sodium​, it is possible to assert:

sodium chloride: neutral.

tomato juice: acid.

vinegar: acid.

sea water: base.

bicarbonate of sodium​: base.

Best regards!

3 0
3 years ago
What is the Ksp expression for the dissociation of calcium oxalate?Immersive Reader
skelet666 [1.2K]

Answer:

Ksp = [Ca⁺²] × [C₂O₄⁻²]

Explanation:

Step 1: Write the balanced reaction for the dissociation of calcium oxalate

CaC₂O₄(s) ⇄ Ca⁺²(aq) + C₂O₄⁻²(aq)

Step 2: Write the expression for the solubility product constant (Ksp) of calcium oxalate

The solubility product constant is the equilibrium constant for the dissociation reaction, that is, it is equal to the product of the concentrations of the products raised to their stoichiometric coefficients divided by the product of the concentrations of the reactants raised to their stoichiometric coefficients. It doesn't include solids nor pure liquids because their activities are 1.

Ksp = [Ca⁺²] × [C₂O₄⁻²]

3 0
3 years ago
What are the type of bones structure in the skeletal system
Nikolay [14]

Components of the Skeletal System. The skeletal system is composed of four main fibrous and mineralized connective tissues : bones, ligaments, tendons, and joints. Bone: A rigid form of connective tissue that is part of the skeletal system of vertebrates and is composed principally of calcium.

5 0
3 years ago
Read 2 more answers
Other questions:
  • If there is initially 1.334 m o2, how long will it take for the o2 concentration to reach 0.443 m?
    5·1 answer
  • If each of the following compounds/ions were placed between 2 electrically charged plates (one positive and one negative) Which
    5·1 answer
  • When a neutral atom gains or loses electrons, it becomes charged and is called a​
    11·2 answers
  • What is the most simplified meaning within a language?
    6·2 answers
  • A teacher performs a flame test lab experiment for various compounds. During the lab, the teacher mislabels one of the solutions
    9·1 answer
  • Write a balanced chemical equation showing how each metal oxide reacts with HCl.
    8·1 answer
  • Are your knees the elbows of your legs or are your elbows the knees of your
    12·2 answers
  • What is the temperature of 0.750 mol of a gas stored in a 6,050 mL cylinder al 221 atm?
    5·1 answer
  • Atoms of which of the following elements have the smallest atomic radius?
    8·1 answer
  • What happen when molten zinc bromide is electrolysised
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!