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
const2013 [10]
2 years ago
5

Molarity of a salt water solution of "0.47" moles of NaCl dissolved in a volume of 0.25L

Chemistry
1 answer:
asambeis [7]2 years ago
5 0

Answer:

1.88 M

Explanation:

The following data were obtained from the question:

Mole of NaCl = 0.47 mole

Volume of solution = 0.25L

Molarity =?

Molarity is defined as the mole of solute per unit litre of the solution. It can represented mathematically as:

Molarity = mole /Volume

Using the above formula, the molarity of the salt water solution can be obtained as follow:

Molarity = 0.47/0.25

Molarity = 1.88 M

You might be interested in
Why does ice float in water?
MaRussiya [10]
Ice has a lower density than the density of water.
5 0
3 years ago
The ΔHcomb value for anethole is -5539 kJ/mol. Assume 0.840 g of anethole is combusted in a calorimeter whose heat capacity (Cal
bonufazy [111]

Answer:

Final temperature of calorimeter is 25.36^{0}\textrm{C}

Explanation:

Molar mass of anethole = 148.2 g/mol

So, 0.840 g of anethole = \frac{0.840}{148.2}moles of anethole = 0.00567 moles of anethole

1 mol of anethole releases 5539 kJ of heat upon combustion

So, 0.00567 moles of anethole release (5539\times 0.00567)kJ of heat or 31.41 kJ of heat

6.60 kJ of heat increases 1^{0}\textrm{C} temperature of calorimeter.

So, 31.41 kJ of heat increases (\frac{1}{6.60}\times 31.41)^{0}\textrm{C} or 4.76^{0}\textrm{C} temperature of calorimeter

So, the final temperature of calorimeter = (20.6+4.76)^{0}\textrm{C}=25.36^{0}\textrm{C}

3 0
3 years ago
Va rog urgent e pt chimie​
den301095 [7]

Answer:

It conducts electricity

It conducts heat

Water is needed for rusting

Explanation:

Metals refer to elements that are found towards the left hand side of the periodic table of elements. They are found in groups 1- 13 and few of them are also found at the bottom of groups 14 and 15.

Now these metal have certain properties that are general to all of them. two of these properties listed among the options in the question are;

i) They conduct electricity

ii) They conduct heat

These properties apply to all metals universally.

Rusting is an electrochemical reaction in which hydrated iron III oxide is formed. In the electrochemical reaction, water in intimately involved in the process. Hence; oxygen and water are required for rusting to take place.

8 0
3 years ago
Which pair of elements form an ionic bond?
Anastasy [175]

Answer:

As an example I can say sodium (Na) and chlorine (Cl).

Explanation:

An ionic bond occurs when a metal element reacts with a nonmetal element. Therefore in the answer given above the Na is metal and Cl is nonmetal and they form a molecule through ionic bonding.

3 0
3 years ago
A neutral atom has the following electron configuration: What is the chemical symbol for the atom? How many electrons does the a
tiny-mole [99]

Answer:

pls the image didn't come

Explanation:

ols the. atom's image didn't appear

3 0
3 years ago
Other questions:
  • Water is neutral because it contains small but equal concentrations of___________ and ___________. Circle the correct answer. Hy
    12·1 answer
  • Living organisms all have dna and rna which are both
    9·2 answers
  • What statement correctly defines dynamic equilibrium
    5·1 answer
  • List two characteristics used to classify an organism
    9·1 answer
  • A stone weighs 105 lb in air. When submerged in water, it weighs 67.0 lb. Find the volume and specific gravity of the stone.
    15·1 answer
  • 1. What is oxidation? * O a. it is loss of electrons O b. it is gain of electrons O c. it is loss of protons O d. none of the ab
    8·1 answer
  • Drag the slider from January to December. Based on what you observe, do you think Barcelona has large temperature changes throug
    14·1 answer
  • Industries use heterogeneous catalysts because they are _______
    5·1 answer
  • Why does liquid move like it does when heated in the middle?
    9·1 answer
  • Butane gas is compressed and used as a liquid fuel in disposable cigarette lighters and lightweight camping stoves. Suppose a li
    14·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!