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
Igoryamba
3 years ago
9

What is the molarity of a solution formed by dissolving 155 mg of calcium nitrate in

Chemistry
1 answer:
kumpel [21]3 years ago
5 0

Answer:

9.45 × 10⁻³ M

Explanation:

Step 1: Given data

  • Mass of calcium nitrate (solute): 155 mg (0.155 g)
  • Volume of solution: 100. mL (0.100 L)

Step 2: Calculate the moles of solute

The molar mass of Ca(NO₃)₂ is 164.09 g/mol.

0.155 g × 1 mol/164.09 g = 9.45 × 10⁻⁴ mol

Step 3: Calculate the molarity of the solution

The molarity is equal to the moles of solute divided by the liters of solution.

M = 9.45 × 10⁻⁴ mol/0.100 L = 9.45 × 10⁻³ M

You might be interested in
The momentum of an object depends on which two quantities?
Maurinko [17]
The answer is D; Mass and Velocity
6 0
3 years ago
Read 2 more answers
PLEASE HURRY AND SHOW WORK
IgorC [24]

Answer:

The answer to your question is   P = 1.64 atm

Explanation:

Data

Volume = 2.5 x 10⁷ L

Temperature = 22°C

Pressure = ?

Moles = 1.7 x 10⁶

R = 0.082 atm L/ mol°K

Process

1.- Convert temperature to °K

Temperature = 22 + 273

                      = 295°K

2.- Use the Ideal gas law to solve this problem

                PV = nRT

- Solve for P

                P = nRT / V

- Substitution

                P = (1.7 x 10⁶)(0.082)(295) / 2.5 x 10⁷

- Simplification

                P = 41123000 / 2.5 x 10⁷

- Result

                P = 1.64 atm

3 0
3 years ago
How does changing the temperature affect the chemical reaction?
tiny-mole [99]
The correct answer is C) Raising the temperature increases reaction rate by increasing the energy of the reacting atoms/ions/molecules and increases the number of collisions. 
8 0
3 years ago
Is mixing salt and pepper physical change or chemical change ?
Rom4ik [11]
Yes mixing salt with pepper change
6 0
3 years ago
Questions and answers about isotopes grade 8 I need this for a PowerPoint exam projects
DanielleElmas [232]

Answer:

Question: A patient is diagnosed with a damage in the thyroid gland.

Which isotope is used to treat the patient?

Option:

A. Copper-64

B. Cobalt-60

C. Carbon-14

D. Iodine-131

Correct answer : D. Iodine-131

Question: Give the definition of isotopes.

Answer : Isotopes is the atoms of elements with the same proton number but different number of neutrons.

3 0
2 years ago
Other questions:
  • Given these reactions, where X represents a generic metal or metalloid 1) H2(g)+12O2(g)⟶H2O(g)ΔH1=−241.8 kJ 1) H2(g)+12O2(g)⟶H2O
    7·1 answer
  • A given volume of gas at a temperature of 100 K has a
    14·1 answer
  • How does the photoelectric effect show that light has some properties of a stream of particles.
    10·2 answers
  • The half-reactions in a nickel-cadmium (nicad) battery are:
    7·1 answer
  • Knowing how fossils form, do you think it’s likely that humans will ever piece together a complete fossil record for every speci
    6·2 answers
  • This is due today so please help me
    8·2 answers
  • 9) All elements can be sorted into 3 simple groups:
    12·2 answers
  • Give reasons :
    15·2 answers
  • What is largest value for the third quantum number
    14·1 answer
  • Haley recorded several notes in her lab journal about the experiment. Which of her notes below is an interpretation of the data
    11·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!