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
Stella [2.4K]
2 years ago
14

A theory is:

Chemistry
1 answer:
SpyIntel [72]2 years ago
3 0
A theory is a proposed explanation for an observation
You might be interested in
What two things must all matter have?
OleMash [197]

1.) Mass

2.) Can occupy space (Volume)

6 0
3 years ago
Read 2 more answers
Um pacote de iogurte tem 500g de um produto. A quanto equivale essa massa em quilogramas?
Rudik [331]
<span>5 quilos 
dfghjjjjjjjjjjjjjjjjj

</span>
6 0
3 years ago
What mass of sodium hydroxide is needed to neutralise 24.5kg of sulfuric acid <br> H2SO4 + N2 = 2NH3
sveticcg [70]

Answer:

23.92 g

Explanation:

Molar mass of H2SO4 = (2×1)+32+(16×4)= 2+32+48= 82g/mol

H2SO4 + 2NaOH ---> Na2SO4 + 2H2O

I mole of H2SO4 = 2 moles of NaOH

24.5/82 = 24.5/82 × 2

= 0.598 moles of NaOH will neutralize

Mass= mole× molar mass

Molar mass of NaOH= 23+16+1 = 40g/mol

Mass= 0.598 × 40 = 23.92g of NaOH

7 0
3 years ago
What is a precipitate?
Mariulka [41]
Answer: 1) A solid product of a chemical reaction that is in aqueous form.
6 0
3 years ago
Determine the empirical formula of an oxide of silicon from the following: mass of crucible= 18.20g, mass of crucible +silicon =
lyudmila [28]
The required empirical formula of the silicon oxide is SiO2.
4 0
3 years ago
Other questions:
  • The mineral stibnite, antimony(III) sulfide, is treated with hydrochloric acid to give antimony(III) chloride and hydrogen sulfi
    11·1 answer
  • A) Calculate the average density of the following object (assume it is a perfect sphere). SHOW ALL YOUR WORK (formulas used, num
    15·1 answer
  • 1.)Which is the correct order of the organization of the human body?
    8·2 answers
  • There are 5 areas of chemistry:physical chemistry, organic chemistry, analytical chemistry, biochemistry and inorganic chemistry
    15·1 answer
  • Which of the following explain why nonmetals are typically harder and more brittle than metals?
    14·2 answers
  • In our simulation what did the σ (sigma) stand for?
    12·1 answer
  • What is the maximum mass of ethyl alcohol you could boil with 2000 JJ of heat, starting from 17 ∘C∘C?
    8·2 answers
  • Why is water important to cells
    5·2 answers
  • I need help on this :/
    10·1 answer
  • A 3.20-mol sample of gas occupies a volume of 350. mL at 300.0 K. Determine the
    12·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!