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
eimsori [14]
3 years ago
10

What is the molarity of a solution made by dissolving 18.4 g of potassium perchlorate in enough water to fill a 300.00 mL volume

tric flask to the calibration mark?
Chemistry
1 answer:
AysviL [449]3 years ago
3 0
The units of molarity are moles per liter; therefore, in order to compute the molarity, we must first find the moles of potassium perchlorate and the volume in liters:
Moles = mass / molecular mass
Moles = 18.4 / 138.6
Moles = 0.13 mol

Volume = 300 mL
1 L = 1000 mL
Volume = 0.3 mL

Molarity = moles / liters
Molarity = 0.13 / 0.3
Molarity = 0.43 M
You might be interested in
Explain why the nucleus of an atom is positively charged but the overall charge of an atom is neutral
luda_lava [24]

Answer:

sorry

Explanation:

i'm not a chemistry student

but let me try

it is because the neutron of an atom is -

why the proton and electron is +and- (positive and negative)

so + and - = 0

4 0
3 years ago
Smoking marijuana can be as unhealthy as smoking cigarettes and ___________
Afina-wow [57]
The answer is all of them. But in a school situation, A would be appropriate. This is because the smoke gets into the smokers lungs, whether it be marijuana or tobacco, and can cause cancer cells to grow in your lungs and enter your bloodstream.
So A is the answer. 
3 0
3 years ago
Read 2 more answers
Water is a polar molecule and attracts other polar molecules. Which of the following is a consequence of this property?
Afina-wow [57]
Water is considered a universal solvent
4 0
3 years ago
Read 2 more answers
Which statement correctly describes a physical change?
ASHA 777 [7]
A physical change is a change in the appearance of a substance. 
8 0
4 years ago
The idea that atoms are neither gained nor lost during a chemical reaction is called the law of
Igoryamba
Conservation of matter
7 0
3 years ago
Other questions:
  • Honors Stoichiometry Activity Worksheet
    14·1 answer
  • How did speculators take advantage of the Homestead Act?
    14·1 answer
  • Hydrazine (N2H4) is a chemical compound used in rocket fuel. Which of the following represents the correct balanced equation for
    13·1 answer
  • Which element in the image will turn into extrusive igneous rock?
    14·1 answer
  • The vapor pressure of benzene at 298 K is 94.4 mm of Hg. The standard molar Gibbs free energy of formation of liquid benzene at
    6·1 answer
  • Explain how H20 chemical formula describe a model of a water molecule?
    5·1 answer
  • Calculate ΔGrxn for this equation, rounding your answer to the nearest whole number. CaCO3(s) → CaO(s) + CO2(g) ΔGf,CaCO3 = −1,1
    11·1 answer
  • Why is reproducibility so important to scientists? Reproducible experiments help scientists win awards. Reproducible experiments
    13·2 answers
  • The reaction of hydrogen with nitrogen to produce ammonia is shown below. If there are 3 moles of nitrogen, how many moles of hy
    10·2 answers
  • What is the mass of one mole of product? (Remember the law of conservation of mass)<br> g
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!