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
Travka [436]
2 years ago
5

How many moles are in 43.5 g of sodium hydroxide (NaOH)?

Chemistry
1 answer:
Makovka662 [10]2 years ago
3 0

Answer:

1.09 moles of NaOH

Explanation:

First of all, to calculate moles, you need to find the molar mass of NaOH.

Let us first find the molar mass of NaOH then.

Na = 23.0 amu

O = 16.0

H = 1.0

They are 1 nitrogen atom, 1 oxygen atom, and one hydrogen atom.

So do this.

23.0(1) + 16.0(1) + 1.0(1) = 40 g/mol.

Now use dimensional analysis to show your work

43.5 g of NaOH * 1 mol of NaOH / 40 g/mol of NaOH

The grams cancel out.

43.5 / 40.0 = 1.0875

Use sig figs and round the answer to the nearest hundredths place.

1.0875 = 1.09

So the final answer is 1.09 moles of NaOH

Hope it helped!

You might be interested in
What form of energy does a glue gun produce when turned on?​
jok3333 [9.3K]
The answer is heat.

To use a glue gun, it has to use heat to heat up so that it can melt the glue.
4 0
2 years ago
Imagine that instead of balls, you were rolling positively charged ions of the same element).
Ghella [55]
The ion with a +3 charge would be deflected the most by the magnet because it has the strongest positive charge therefore it will be the one being the most repelled. and the ion that would be deflected the least would be the ion with a +1 charge because it has the least amount of charge so the magnet will still repel it but just not as much as it will repel the ion with a +3 charge.

hope that helps
8 0
2 years ago
Which of the following statements correctly characterizes the subatomic particle
vichka [17]

Answer:

Its mass is about the same as that of a proton

Explanation:

4 0
3 years ago
How are gems different from regular minerals? Gems are softer than regular minerals. Regular minerals are more beautiful than ge
just olya [345]
The definition of a gem is "a precious stone, cut and polished for jewelry. They are all minerals. Some highly desirable gemstones may not be suitable for jewelry, yet be very collectible, like sphene. Others, like those in the corundum family, are prized for color and hardness, like emeralds and diamonds. Further, some common minerals, when polished, make beautiful pieces. With all that said, i woukd go with rarer.
8 0
2 years ago
Read 2 more answers
The specific heat for liquid ethanol is 2.46 J/(g•°C). When 210 g of ethanol is cooled from
avanturin [10]

Answer:

a) heat it from 23.0 to 78.3

q = (50.0 g) (55.3 °C) (2.46 J/g·°C) =  

b) boil it at 78.3

(39.3 kJ/mol) (50.0 g / 46.0684 g/mol) =  

c) sum up the answers from the two calculations above. Be sure to change the J from the first calc into kJ

Explanation:

3 0
3 years ago
Other questions:
  • Olivia became interested in the fossil evidence that Wegener used to form his hypothesis of continental drift. How did fossils s
    14·1 answer
  • How is air temperature usually measured?
    10·2 answers
  • Which of the following best describes a pair of elements that will form an ionic bond?
    11·2 answers
  • Don't know how to solve
    7·1 answer
  • Who’s does an atom become a positively charged ion?
    12·1 answer
  • Which subctant will not conduct electricity a Aluminium b copper c plastic d steel​
    11·2 answers
  • Which statements describe the genetic code? Check all that apply.
    5·2 answers
  • Helium (He), oxygen (O), carbon (C) fluorine (F), and chlorine (Cl) are all nonmetals. Using the periodic table, which pair of n
    9·1 answer
  • What type of bond would two sulfur atoms require to form a molecule?
    9·2 answers
  • How many moles are in 12 grams of potassium chlorate, KClO3?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!