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
mina [271]
3 years ago
9

1. How many MOLECULES are contained in 80.0 grams of sodium hydroxide?

Chemistry
1 answer:
Anna11 [10]3 years ago
6 0

Answer:

2 molecules

Explanation:

In 80 grams there will be 2 molecules of NaOH, so mass of Sodium would be 23 x 2 = 46g.

You might be interested in
You plug in an extension cord and have to be very careful around the electrical outlet. However, you can handle the extension co
evablogger [386]
Because the cord is wrapped in rubber or plastic and they are not good conductors
4 0
3 years ago
Read 2 more answers
Identify the limiting reactant when 32. 0 g hydrogen is allowed to react with 16. 0 g oxygen
Mkey [24]

Answer:

Oxygen is limiting reactant

Explanation:

2 H2  +   O2  ======> 2 H2 O

from this equation (and periodic table) you can see that

  4 gm of H combine with 32 gm O2  

     H / O  =  4/32 = 1/8

       32 /16    =  2/1    shows O is limiter

         for 32 gm H you will need 256 gm O   and you only have 16 gm

3 0
1 year ago
2KCIO3 -2KCL + 302
Firlakuza [10]

Answer:

a. 6 moles of O₂

b. 4.06×10²⁴ molecules of O₂

c. 3.04 g of KCl

Explanation:

Reaction of decomposition is:

2KClO₃  →  2KCl  +  3O₂

a. See stoichiometry value

2 moles of potassium chlorate can decompose to 2 moles of potassium chloride and 3 moles of oxygen. Ratio is 2:3

If 2 moles of KClO₃ can decompose to 3 moles of O₂

Then 4 moles, may decompose to (4 . 3)/2 = 6 moles of O₂

b. In this case, the stoichiometry is the same.

Per 2 moles of KClO₃, I produce 2 moles of KCl

Then, 4.5 moles of KCl, were produced by 4.5 moles of KClO₃

We apply, the last relation:

(4.5 . 3) /2 = 6.75 moles of O₂ are also produced.

How many molecules are in 6.75 moles?

6.75 mol . 6.02×10²³ molecules/mol = 4.06×10²⁴ molecules of O₂

c. First of all, we convert the mass to moles:

5g . 1mol /122.55g = 0.0408 moles of salt

As ratio is 2:2, 0.0408 moles of salt, decompose to 0.0408 moles of KCl

We convert the moles to mass: 0.0408 mol . 74.55g /mol = 3.04g

5 0
2 years ago
2 1.1.4 Quiz: Amplitude, Frequency, and Speed
sammy [17]
The answer is C
Sbbsshhshsgssh
8 0
3 years ago
What is the difference between a Group/Family and a period on the Periodic Table?
drek231 [11]

Explanation:

The vertical columns on the periodic table are called groups or families because of their similar chemical behavior. All the members of a family of elements have the same number of valence electrons and similar chemical properties. The horizontal rows on the periodic table are called periods.

4 0
2 years ago
Read 2 more answers
Other questions:
  • What forces create the bent triatomic shape of a water molecule
    6·1 answer
  • In the following reaction, 2NaCl 2Na + Cl2 sodium and chlorine are products, salts, reactants, or ions?
    12·2 answers
  • A 1.0-mole sample of krypton gas has a mass of
    7·1 answer
  • Balance chemical equation ClO2+H2O=HClO3+HCl
    5·1 answer
  • What do these substances have in common? apple juice, helium gas, salt water and copper wire
    12·2 answers
  • Sound usually travels most rapidly in
    7·1 answer
  • If DNA were straight it would be
    13·2 answers
  • hey yall .......................................................................................................................
    10·2 answers
  • A plane takes 230 passengers from New York to Chicago in 3 hours.
    12·1 answer
  • What is the product of the oxidation reaction of isopropyl alcohol with sodium hypochlorite?
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!