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
galina1969 [7]
2 years ago
5

A student heats a LaTeX: 2.5 g sample of calcium carbonate in a test tube. What mass of calcium oxide remains in the test tube w

hen the reaction is complete?
CaCO3(s) to CaO(s) + CO2(g)
Select one:
a) 1.4 g CaO
b)2.1 g CaO
c)2.5 g CaO
d)1.0 g CaO
Chemistry
2 answers:
Akimi4 [234]2 years ago
8 0
I got answer ‘a’ (1.4g)

polet [3.4K]2 years ago
3 0

Answer:

2.5

Explanation:

You might be interested in
Rubbing alcohol is less polar than water. Both are liquids at room temperature which One boils first? why?
Sergeeva-Olga [200]

Answer:

because both liquid are made from different substances.

Explanation:

8 0
3 years ago
If 3.00 g of aluminum hydroxide reacts with 1.40 g of sulfuric acid, what is the mass of water produced?
Leokris [45]
The Law of Conservation of Mass states that matter is not created nor destroyed.

Based on this, we can use some addition to find the answer.

3.00 + 1.40 = 4.40 g

Hope this helps :)
4 0
3 years ago
Why is Avogadro’s number referred to as a mole? If you could change this terminology, what would you change it to and why?
stepan [7]

The number of particles (molecules, atoms, compounds, etc.) per mole of a substances is known as Avagadro number. It is equal to 6.022×10^23 mol-1 and is expressed as NA.


Number of moles is the amount of a substance that contains as many particles as there are atoms in 12 grams of pure carbon-12. So, 1 mol contains 6.022×10^23 elementary entities of the substance. Since 6.022 x 10^23 is the Avagadro number, one mole is equal to Avagadro number.


One mole of a substance is the ratio of mass of the substance by the molecular mass of the substance. Thus the mass of one mole of a substance is equal to the substance's molecular weight. Thus one mole of a substance is the atomic mass unit of a substance and since one mole is equivalent to the Avagadro number,we can conclude that one Avagadro number is one atomic mass unit of the substance.

7 0
3 years ago
if you place a crystal substance on a tabletop, return to view it after some time passes, and find it as a powered substance, wh
Goryan [66]
The process which has taken place is called CRYSTALLIZATION.
Generally, crystallization is the process by which solid crystals are precipitated from solution. Crystallization can also occur when a crystal melt or when a crystal get deposited directly from a  gas, although these cases are rarer compare to crystals forming from solutions.
5 0
3 years ago
Arrange the metallic elements in order of increasing reactivity. Use the periodic table to identify their positions on the table
7nadin3 [17]

Answer:

Magnesium>Calcium>Potassium>rubidium

Explanation:

7 0
3 years ago
Read 2 more answers
Other questions:
  • The question is below
    13·1 answer
  • 1. What is the weight of the ethyl alcohol that exactly fills a 200.0 mL container? The density of ethyl alcohol is 0.789 g/mL
    14·1 answer
  • A 12.00 g milk chocolate bar is found to contain 8.000 g of sugar. What will be the amount of sugar in milligrams if the size of
    12·2 answers
  • Write the charge and full ground-state electron configuration of the monatomic ion most likely to be formed by each:
    6·1 answer
  • Water boils at what degrees Celsius
    15·2 answers
  • Consider this reaction: Zn(s) + 2HCl(aq) ZnCl2(aq) + H2(g). Which change could decrease the rate of production of ZnCl2?
    7·2 answers
  • HELP ME QUICK
    11·2 answers
  • A physical change occur when a
    12·2 answers
  • There are always attractive forces between a collection of atoms or molecules which may not be negligible as suggested by the ki
    12·1 answer
  • Aluminum metal reacts with aqueous nickel(II) sulfate to produce aqueous aluminum sulfate and nickel as a precipitate. In this r
    13·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!