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
kvv77 [185]
3 years ago
11

How many moles are in a 62.5-g sample of potassium nitrate (KNO3)?

Chemistry
1 answer:
Reil [10]3 years ago
7 0

Answer:25.3 g of KNO₃ contain 0.25 moles.

Explanation:

You might be interested in
How many liters of 4 M solution can be made using 100 grams of lithium bromide?
Misha Larkins [42]
Add 450 million grams to the solution
7 0
3 years ago
2Al + 6HCl → 2AlCl3 + 3H2<br> If 85.0 grams of HCl react, how many moles of H2 are produced?
Murrr4er [49]

Answer:

1.17 mol

Explanation:

Step 1: Write the balanced equation

2 Al + 6 HCl → 2 AlCl₃ + 3 H₂

Step 2: Calculate the moles corresponding to 85.0 g of HCl

The molar mass of HCl is 36.46 g/mol.

85.0 g × 1 mol/36.46 g = 2.33 mol

Step 3: Calculate the number of moles of H₂ produced from 2.33 moles of HCl

The molar ratio of HCl to H₂ is 6:3.

2.33 mol HCl × 3 mol H₂/6 mol H₂ = 1.17 mol H₂

8 0
3 years ago
Which types of changes must follow the law of conservation of mass?
Elis [28]

Answer: both

Explanation:

6 0
3 years ago
Why are viruses called obligate intracellular parasites?
g100num [7]
Because they cannot survive long outside a living host cell.
5 0
3 years ago
How many moles does the mass quantity 130g of H2O have?
SVETLANKA909090 [29]
It has 7.22 moles.... mole =mass/molar mass
molar mass of H2O=18
130/18=mole
7 0
3 years ago
Other questions:
  • Plastic wrap becomes electrically charged when pulled from its box. As a result, it is attracted to objects such as food contain
    8·1 answer
  • Which of these would a very short plant most likely use to move water and nutrients through the plant?
    15·2 answers
  • The average American student is in class for 330minutes/day. How many hours/day is this?
    6·2 answers
  • You have been working to develop a new fictitious compound in the lab. Determine the amount in units of moles​ [mol] of 20 grams
    14·1 answer
  • What is the h+ concentration for an aqueous solution with poh = 3.35 at 25 ∘c? express your answer to two significant figures an
    8·1 answer
  • What types of intermolecular forces are found in CH<br> 4
    10·1 answer
  • Why does platinum metal make a good catalytic surface for reactant molecules?
    5·1 answer
  • Which statements describe or apply the principal of conservation of energy? Select all that apply.
    5·2 answers
  • Please help me! I got quarantined right when they started a new unit and im confused
    15·1 answer
  • A chemical reaction involving substances a and b stops when b is completely used. B is the.
    7·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!